Scientific Center for Operational Earth Monitoring. Task: Restoring a scientific station Scientific data on the Milky Way where to get it

03.04.2020

This low-luminosity galaxy is about a third the size of the Milky Way, but its mass is surprisingly small. And in this it is fundamentally different from all the hitherto known satellites of the Milky Way and contradicts the basic theories of galaxy formation. How this galaxy could have arisen is a serious mystery to scientists. The newly discovered neighboring galaxy Antlia 2 (indicated by the arrow) is similar in size to the Large Magellanic Cloud (left), but remains extremely dim

Our Milky Way not only has close neighbors, such as the Magellanic Clouds; it is also surrounded by numerous smaller satellite galaxies. These dwarf galaxies often contain fewer than a thousand stars with limited mass, but most contain particularly large quantities of dark matter. And yet most of the stars in the approximately 60 already known such galactic satellites of the Milky Way are very old and metal-poor.

"Treacherous" stars

And now astronomers from Gabriel Torrealba’s group from the Institute of Astronomy and Astrophysics in Taipei (Taiwan) have discovered another one, and a very unusual companion Milky Way. They carefully analyzed data from ESA's Gaia satellite for the presence of variable stars that could belong to as-yet-unknown dwarf galaxies in the vicinity of the Milky Way. These so-called RR Lyrae variables are well recognized by their low amount of heavy elements and their regular pulsation.

“Such stars - RR Lyrae variables - have so far been discovered in every known dwarf galaxy. Therefore, at first we were not particularly surprised to discover a group of such stars almost right next to the galactic disk of the Milky Way,” said study co-author Vasily Belokurov from the University of Cambridge. “But when we took a closer look at their positions, it turned out that we had found something completely new.”

Gigantic size and very low density of stars

The stars turned out to be part of a hitherto unknown and very strange galaxy. It is located at a distance of only 130 thousand light years from the Milky Way, but for the most part it “hides” from us behind the dense galactic stellar disk. And the strangest thing is that the galaxy, called Antlia 2, has an incredibly large size for a dwarf galaxy - its volume corresponds to the size of the Large Magellanic Cloud or a third of the size of the Milky Way.
But at the same time, the galaxy is 4 thousand times lighter than the Magellanic Cloud, that is, its density of filling with stars is extremely low. "It's more like a ghost of a galaxy," Torrealba says. “Objects as diffuse as Antlia 2 have not yet been observed by astronomers.” The newly discovered “ghost galaxy” does not correspond to either normal galaxies like the Milky Way or the types and types of dwarf galaxies known so far - it is something completely special.

Contradiction to popular theories

The strange thing about this galaxy is this: usually the satellites of the Milky Way over time lose some of their stars in favor of our native galaxy, since its enormous gravity simply “takes” them away from these satellite galaxies. “But what is completely inexplicable is why Antlia 2 has such cyclopean dimensions,” says co-author Sergei Koposov of Carnegie Mellon University. “After all, this means that this satellite galaxy at first should have had an absolutely unimaginable size, if even after the “theft” of the stars it remained so huge.”

As astronomers explain, such a huge, but so dim cluster of stars contradicts all current theories of galaxy formation - they simply do not provide for the possibility of the existence of such galaxies. And they can only puzzle over how Antlia 2 could have formed in the first place, and why it is the way it is today.

How could Antlia 2 have formed?

Scientists suggest this option: It is possible that it was the supernova explosions that took place in past eras and strong stellar winds that managed to push the stars so far apart, expanding the limits of Antlia 2. But at the same time, dark matter can also be “diluted” even more than is the case in ordinary cases. “But if it was star formation that was able to change the distribution of dark matter in the Antlia 2 galaxy, then in this case it acted with unprecedented efficiency,” says Jason Sanders from the University of Cambridge.

The second possibility is that Antlia 2 originated with an unusually large dark matter halo. As a result of close passes near the Milky Way, it lost most of its stars, but the gravitational influence of the halo made sure that this galaxy as a whole did not shrink or wrinkle, but only became less dense. “If this model is true, then there should be a huge amount of debris inside and around Antlia 2 due to this tidal effect,” the researchers say. “But this can only be verified by targeted scanning and combing of the area around this galaxy.”

Just the tip of the iceberg?

But for now, Antlia 2 remains a mystery. And the question arises: maybe there are other, and even numerous, “ghost galaxies.” "We're wondering if this galaxy is just the tip of a huge iceberg," says Matthew Walker of Carnegie Mellon University. “After all, it may turn out that the Milky Way is generally located in a dense ring of an entire population of almost invisible dwarf galaxies like this one.”

Computer model of the Milky Way and its compact neighbor, the Sagittarius dwarf galaxy

From this, scientists concluded that the stellar populations in the galactic halo initially formed within the Milky Way, but then migrated into space above and below the galactic disk. Researchers call this phenomenon “galactic eviction.” This is explained by the fact that the stars could have been pushed out by other fairly massive dwarf galaxies that passed through Milky Way in past.

Simulation of disturbances caused by the gravitational interaction of the Milky Way with a nearby dwarf galaxy. Stars in the halo are shown, the positions of which were taken into account when checking the model

“They are pushed out of the plane of the Milky Way when a sufficiently massive dwarf galaxy passes through it. This passage creates oscillations, disturbances that eject stars from the disk, up or down, depending on the direction of movement of the disturbed mass,” explains one of the authors of the work, Judy Cohen.

360-degree panorama of the Milky Way (consists of many photos)

This discovery is interesting for two reasons. On the one hand, it supports the assumption that stars located in galactic halos initially appear inside galactic disks and then can be thrown out of them. On the other hand, it shows that the galactic disk of the Milky Way and its dynamics are much more complex structure and phenomenon than previously thought.

“We have proven that the situation with stars moving to greater distances from their original places as a result of the influence of satellite galaxies is a very common phenomenon. At least in the realities of the Milky Way. It is quite possible that similar features associated with chemical composition stars, can also be found in other galaxies, which, in turn, will indicate the universality of such galactic dynamic processes,” adds Allison Sheffield, an astronomer at LaGuardia Community College.

Next, astronomers plan to conduct spectral analysis additional stars from the Tri-And and A13 supergroups, as well as explore star clusters located even further from the galactic disk. In addition, scientists would like to determine the masses and ages of these stars. Based on this data, researchers could make an assumption about when exactly this galactic eviction took place.

Such studies will allow us to more accurately understand the evolution of galaxies. And combined with ongoing efforts by scientists to study the cores of galaxies, as well as the search for the connection between the supermassive black holes found within them and star formation, we are gradually moving closer to a full understanding of how our Universe evolved to the state in which it now finds itself.

A galaxy is a large formation of stars, gas, and dust that is held together by gravity. These largest compounds in the Universe can vary in shape and size. Most space objects are part of a particular galaxy. These are stars, planets, satellites, nebulae, black holes and asteroids. Some of the galaxies have big amount invisible dark energy. Due to the fact that galaxies are separated by empty space, they are figuratively called oases in the cosmic desert.

	Elliptical galaxy	Spiral galaxy	Wrong galaxy
Spheroidal component	The entire galaxy	Eat	Very weak
Star disk	None or weakly expressed	Main component	Main component
Gas and dust disk	No	Eat	Eat
Spiral branches	No or only near the core	Eat	No
Active cores	Meet	Meet	No
	20%	55%	5%

Our galaxy

The closest star to us, the Sun, is one of the billion stars in the Milky Way galaxy. Looking at the starry night sky, it’s hard not to notice a wide strip strewn with stars. The ancient Greeks called the cluster of these stars the Galaxy.

If we had the opportunity to look at this star system from the outside, we would notice an oblate ball in which there are over 150 billion stars. Our galaxy has dimensions that are difficult to imagine in your imagination. A ray of light travels from one side to the other for hundreds of thousands of Earth years! The center of our Galaxy is occupied by a core, from which huge spiral branches filled with stars extend. The distance from the Sun to the core of the Galaxy is 30 thousand light years. solar system located on the outskirts of the Milky Way.

Stars in the Galaxy, despite the huge accumulation of cosmic bodies, are rare. For example, the distance between the nearest stars is tens of millions of times greater than their diameters. It cannot be said that stars are scattered randomly in the Universe. Their location depends on the gravitational forces that hold heavenly body in a certain plane. Stellar systems with their own gravitational fields are called galaxies. In addition to stars, the galaxy includes gas and interstellar dust.

Composition of galaxies.

The Universe is also made up of many other galaxies. The closest ones to us are distant at a distance of 150 thousand light years. They can be seen in the sky of the southern hemisphere in the form of small foggy spots. They were first described by Pigafett, a member of the Magellanic expedition around the world. They entered science under the name of the Large and Small Magellanic Clouds.

The closest galaxy to us is the Andromeda Nebula. It is very large in size, so it is visible from Earth with ordinary binoculars, and in clear weather, even with the naked eye.

The very structure of the galaxy resembles a giant spiral convex in space. On one of the spiral arms, ¾ of the distance from the center, is the Solar System. Everything in the galaxy revolves around the central core and is subject to the force of its gravity. In 1962, astronomer Edwin Hubble classified galaxies depending on their shape. The scientist divided all galaxies into elliptical, spiral, irregular and barred galaxies.

In the part of the Universe accessible to astronomical research, there are billions of galaxies. Collectively, astronomers call them the Metagalaxy.

Galaxies of the Universe

Galaxies are represented by large groups of stars, gas, and dust held together by gravity. They can vary significantly in shape and size. Most space objects belong to some galaxy. These are black holes, asteroids, stars with satellites and planets, nebulae, neutron satellites.

Most galaxies in the Universe contain enormous amounts of invisible dark energy. Since the space between different galaxies is considered empty, they are often called oases in the void of space. For example, a star called the Sun is one of the billions of stars in the Milky Way galaxy located in our Universe. The Solar System is located ¾ of the distance from the center of this spiral. In this galaxy, everything constantly moves around the central core, which obeys its gravity. However, the core also moves with the galaxy. At the same time, all galaxies move at super speeds.
Astronomer Edwin Hubble in 1962 carried out a logical classification of the galaxies of the Universe, taking into account their shape. Now galaxies are divided into 4 main groups: elliptical, spiral, barred and irregular galaxies.
What is the largest galaxy in our Universe?
The largest galaxy in the Universe is a supergiant lenticular galaxy located in the Abell 2029 cluster.

Spiral galaxies

They are galaxies whose shape resembles a flat spiral disk with a bright center (core). The Milky Way is a typical spiral galaxy. Spiral galaxies are usually called with the letter S; they are divided into 4 subgroups: Sa, So, Sc and Sb. Galaxies belonging to the So group are distinguished by bright nuclei that do not have spiral arms. As for the Sa galaxies, they are distinguished by dense spiral arms tightly wound around the central core. The arms of Sc and Sb galaxies rarely surround the core.

Spiral galaxies of the Messier catalog

Barred galaxies

Bar galaxies are similar to spiral galaxies, but have one difference. In such galaxies, spirals begin not from the core, but from the bridges. About 1/3 of all galaxies fall into this category. They are usually designated by the letters SB. In turn, they are divided into 3 subgroups Sbc, SBb, SBa. The difference between these three groups is determined by the shape and length of the jumpers, where, in fact, the arms of the spirals begin.

Spiral galaxies with the Messier catalog bar

Elliptical galaxies

The shape of galaxies can vary from perfectly round to elongated oval. Their distinctive feature is the absence of a central bright core. They are designated by the letter E and are divided into 6 subgroups (according to shape). Such forms are designated from E0 to E7. The former have an almost round shape, while the E7 are characterized by an extremely elongated shape.

Elliptical galaxies of the Messier catalog

Irregular galaxies

They do not have any distinct structure or shape. Irregular galaxies are usually divided into 2 classes: IO and Im. The most common is the Im class of galaxies (it has only a slight hint of structure). In some cases, helical residues are visible. IO belongs to the class of galaxies that are chaotic in shape. Small and Large Magellanic Clouds – shining example I'm class.

Irregular galaxies of the Messier catalog

Table of characteristics of the main types of galaxies

	Elliptical galaxy	Spiral galaxy	Wrong galaxy
Spheroidal component	The entire galaxy	Eat	Very weak
Star disk	None or weakly expressed	Main component	Main component
Gas and dust disk	No	Eat	Eat
Spiral branches	No or only near the core	Eat	No
Active cores	Meet	Meet	No
Percent of total number galaxies	20%	55%	5%

Large portrait of galaxies

Not long ago, astronomers began working on a joint project to identify the location of galaxies throughout the Universe. Their goal is to obtain a more detailed picture of the overall structure and shape of the Universe on large scales. Unfortunately, the scale of the universe is difficult for many people to comprehend. Take our galaxy, which consists of more than a hundred billion stars. There are billions more galaxies in the Universe. Distant galaxies have been discovered, but we see their light as it was almost 9 billion years ago (we are separated by such a great distance).

Astronomers learned that most galaxies belong to a certain group (it became known as a “cluster”). The Milky Way is part of a cluster, which in turn consists of forty known galaxies. Typically, most of these clusters are part of an even larger grouping called superclusters.

Our cluster is part of a supercluster, which is commonly called the Virgo cluster. Such a massive cluster consists of more than 2 thousand galaxies. At the time when astronomers created a map of the location of these galaxies, superclusters began to take a concrete form. Large superclusters have gathered around what appear to be giant bubbles or voids. What kind of structure this is, no one yet knows. We don't understand what might be inside these voids. According to the assumption, they can be filled with a certain type of dark matter unknown to scientists or have inside empty space. It will be a long time before we know the nature of such voids.

Galactic Computing

Edwin Hubble is the founder of galactic exploration. He is the first to determine how to calculate the exact distance to a galaxy. In his research, he relied on the method of pulsating stars, which are better known as Cepheids. The scientist was able to notice a connection between the period needed to complete one pulsation of brightness and the energy that the star releases. The results of his research became a major breakthrough in the field of galactic research. In addition, he discovered that there is a correlation between the red spectrum emitted by a galaxy and its distance (the Hubble constant).

Nowadays, astronomers can measure the distance and speed of a galaxy by measuring the amount of redshift in the spectrum. It is known that all galaxies in the Universe are moving away from each other. The farther a galaxy is from Earth, the greater its speed of movement.

To visualize this theory, just imagine yourself driving a car moving at a speed of 50 km per hour. The car in front of you is driving 50 km per hour faster, which means that its speed is 100 km per hour. There is another car in front of him, which is moving faster by another 50 km per hour. Even though the speed of all 3 cars will be different by 50 km per hour, the first car is actually moving away from you 100 km per hour faster. Since the red spectrum speaks about the speed of the galaxy moving away from us, the following is obtained: the greater the red shift, the faster the galaxy moves and the greater its distance from us.

We now have new tools to help scientists search for new galaxies. Thanks to the Hubble Space Telescope, scientists were able to see what they could only dream of before. The high power of this telescope provides good visibility of even small details in nearby galaxies and allows you to study more distant ones that have not yet been known to anyone. Currently, new space observation instruments are under development, and in the near future they will help to gain a deeper understanding of the structure of the Universe.

Types of galaxies

Spiral galaxies. The shape resembles a flat spiral disk with a pronounced center, the so-called core. Our Milky Way galaxy falls into this category. In this section of the portal site you will find many different articles describing space objects of our Galaxy.
Barred galaxies. They resemble spiral ones, only they differ from them in one significant difference. The spirals do not extend from the core, but from the so-called jumpers. One third of all galaxies in the Universe can be attributed to this category.
Elliptical galaxies have various forms: from perfectly round to oval elongated. Compared to spiral ones, they lack a central, pronounced core.
Irregular galaxies do not have a characteristic shape or structure. They cannot be classified into any of the types listed above. There are much fewer irregular galaxies in the vastness of the Universe.

Astronomers have recently launched a joint project to identify the location of all the galaxies in the Universe. Scientists hope to get a clearer picture of its structure on a large scale. The size of the universe is difficult to estimate human thinking and understanding. Our galaxy alone is a collection of hundreds of billions of stars. And there are billions of such galaxies. We can see light from discovered distant galaxies, but not even imply that we are looking into the past, because the light beam reaches us over tens of billions of years, such a great distance separates us.

Astronomers also associate most galaxies with certain groups called clusters. Our Milky Way belongs to a cluster that consists of 40 explored galaxies. Such clusters are combined into large groups called superclusters. The cluster with our galaxy is part of the Virgo supercluster. This giant cluster contains more than 2 thousand galaxies. After scientists began to draw a map of the location of these galaxies, superclusters acquired certain shapes. Most galactic superclusters were surrounded by giant voids. No one knows what could be inside these voids: outer space like interplanetary space or a new form of matter. It will take a long time to solve this mystery.

Interaction of galaxies

No less interesting for scientists is the question of the interaction of galaxies as components space systems. It's no secret that space objects are in constant motion. Galaxies are no exception to this rule. Some types of galaxies could cause a collision or merger of two cosmic systems. If you understand how these space objects appear, large-scale changes as a result of their interaction become more understandable. During the collision of two space systems, a gigantic amount of energy splashes out. The meeting of two galaxies in the vastness of the Universe is an even more probable event than the collision of two stars. Collisions of galaxies do not always end with an explosion. A small space system can freely pass by its larger counterpart, changing its structure only slightly.

Thus, the formation of formations similar appearance on long corridors. They contain stars and gaseous zones, and new stars are often formed. There are times when galaxies do not collide, but only lightly touch each other. However, even such an interaction triggers a chain of irreversible processes that lead to huge changes in the structure of both galaxies.

What future awaits our galaxy?

As scientists suggest, it is possible that in the distant future the Milky Way will be able to absorb a tiny cosmic-sized satellite system, which is located at a distance of 50 light years from us. Research shows that this satellite has a long life potential, but if it collides with its giant neighbor, it will most likely end its separate existence. Astronomers also predict a collision between the Milky Way and the Andromeda Nebula. Galaxies move towards each other at the speed of light. The wait for a probable collision is approximately three billion Earth years. However, whether it will actually happen now is difficult to speculate due to the lack of data on the movement of both space systems.

Description of galaxies onKvant. Space

The portal site will take you to the world of interesting and fascinating space. You will learn the nature of the structure of the Universe, become familiar with the structure of famous large galaxies and their components. By reading articles about our galaxy, we become more clear about some of the phenomena that can be observed in the night sky.

All galaxies are at a great distance from Earth. Only three galaxies can be seen with the naked eye: the Large and Small Magellanic Clouds and the Andromeda Nebula. It is impossible to count all the galaxies. Scientists estimate that their number is about 100 billion. The spatial distribution of galaxies is uneven - one region may contain a huge number of them, while the second will not contain even a single small galaxy. Astronomers were unable to separate images of galaxies from individual stars until the early 90s. At this time, there were about 30 galaxies with individual stars. All of them were assigned to the Local Group. In 1990, a majestic event took place in the development of astronomy as a science - the Hubble Telescope was launched into Earth orbit. It was this technique, as well as new ground-based 10-meter telescopes, that made it possible to see significantly larger number allowed galaxies.

Today, the “astronomical minds” of the world are racking their brains about the role of dark matter in the construction of galaxies, which manifests itself only in gravitational interaction. For example, in some large galaxies it makes up about 90% of the total mass, while dwarf galaxies may not contain it at all.

Evolution of galaxies

Scientists believe that the emergence of galaxies is a natural stage in the evolution of the Universe, which took place under the influence of gravitational forces. Approximately 14 billion years ago, the formation of protoclusters in the primary substance began. Further, under the influence of various dynamic processes, the separation of galactic groups took place. The abundance of galaxy shapes is explained by the diversity of initial conditions in their formation.

The contraction of the galaxy takes about 3 billion years. Behind this period Over time, the gas cloud turns into a star system. Star formation occurs under the influence of gravitational compression of gas clouds. After reaching a certain temperature and density in the center of the cloud sufficient to begin thermonuclear reactions, a new star is formed. Massive stars are formed from thermonuclear chemical elements, exceeding helium in mass. These elements create the primary helium-hydrogen environment. During enormous supernova explosions, elements heavier than iron are formed. It follows from this that the galaxy consists of two generations of stars. The first generation is the oldest stars, consisting of helium, hydrogen and very small amounts of heavy elements. Second-generation stars have a more noticeable admixture of heavy elements because they form from primordial gas enriched in heavy elements.

IN modern astronomy galaxies as cosmic structures are given a special place. The types of galaxies, the features of their interaction, similarities and differences are studied in detail, and a forecast of their future is made. This area still contains a lot of unknowns that require additional study. Modern science solved many questions regarding the types of construction of galaxies, but there were also many blank spots associated with the formation of these cosmic systems. The current pace of modernization of research equipment and the development of new methodologies for studying cosmic bodies give hope for a significant breakthrough in the future. One way or another, galaxies will always be in the center scientific research. And this is based not only on human curiosity. Having received data on the patterns of development of cosmic systems, we will be able to predict the future of our galaxy called the Milky Way.

The most interesting news, scientific, and original articles about the study of galaxies will be provided to you by the website portal. Here you can find exciting videos, high-quality images from satellites and telescopes that will not leave you indifferent. Dive into the world of unknown space with us!

Milky Way Galaxy

Early results from the Satellites Around Galactic Analogs (SAGA) celestial survey indicate that the Milky Way may not be a typical spiral galaxy at all. The fact is that its satellites - other, very small galaxies - are not as active as those of its counterparts. If preliminary conclusions international group astronomers are confirmed, then scientists may have to reconsider some models that take as a basis the behavior of the Milky Way and its system of satellites. Article published in the magazine The Astrophysical Journal.

Today, the Milky Way is the most well-studied galaxy. One of its important components is its satellite dwarf galaxies, which contain only a few billion stars and allow testing cosmological models on small scales. Research shows that the properties of the Milky Way's brightest moons are inconsistent with predictions from simple simulations based on the current Lambda-CDM cosmological model, which implies that our Universe is filled not only with baryonic matter, but also with dark energy and cold dark matter. More complex simulations show that our galaxy should be surrounded by a large number of dark subhalos, which we have not yet observed. While some scientists attribute this discrepancy to imperfect knowledge of physics, others suggest that the Milky Way and its Local Group neighbors may simply be atypical galaxies.

The authors of the SAGA survey examine analogue galaxies of the Milky Way and their satellites with a brightness no less than that of Leo I, a dwarf elliptical galaxy that is considered one of the most distant satellites of the Milky Way. To date, astronomers have studied eight such galaxies, located at a distance from us from 20 to 40 megaparsecs (you can read about cosmic “rulers” in ours). Around them, astronomers discovered 25 satellites: 14 of them meet formal criteria, and the remaining 11 are either located next to incompletely explored galaxies, or their brightness is less than the lower limit. Thus, together with 13 previously known satellites, scientists received a sample of 27 dwarf galaxies.

An analysis of the luminosity functions of the host galaxies showed a large scatter in the number of satellites: from 1 to 9 for similar galaxies. However, scientists did not find statistically significant correlations between the properties of galaxies and the number of satellites (although this would be difficult, given the small sample size). Comparison with the predictions of the Lambda-CDM model showed that the spread in the number of satellites for the host galaxies was higher than expected.

Interestingly, 26 out of 27 dwarf galaxies undergo active star formation processes, which is not observed in the satellites of the Milky Way and the Andromeda galaxy (M31) with the same magnitude. According to scientists, this is an important discovery, since many modern cosmological models imply that the Milky Way is a typical spiral galaxy. At the same time, astronomers' observations indicate that the system of satellites of our galaxy may not be representative.

The authors of the work warn that the data is not yet enough to make clear conclusions. SAGA's ultimate goal is to study one hundred analogues of the Milky Way. In the next two years, astronomers plan to increase the number of objects studied to 25: this will allow them to verify preliminary results.

Researchers have been trying to explain the dearth of dwarf galaxies around the Milky Way for years. They are still little studied, largely due to observation. According to , supernova explosions in the early stages of galaxy formation and the stellar wind they create may well destroy young dwarf galaxies even before their maturity, “blowing” stars and gas out of them.

Kristina Ulasovich

A new galaxy needs new heroes. While Commander Shepard fought the Reapers, the members of the Andromeda Initiative slept peacefully in their cryopods, heading towards a new home in a galaxy far, far away. However, in Mass Effect Andromeda still has some memory of Shepard, and we're not talking about choosing the gender of the legendary captain when creating a new one

Telegraph

However, in Mass Effect Andromeda there is still some memory of Shepard, and we are not talking about choosing the gender of the legendary captain when creating a new character. In the game you can get the armor of N7 fighters.

How to get N7 armor in Mass Effect Andromeda

Unfortunately, you won’t be able to simply get the coveted set of armor from some well-hidden box. First the armor needs to be examined.

Go to the second deck of the Tempest. Here, in the central compartment, the scientific terminal is very well located. You need the Research section, the armor subsection. The four pieces of N7 armor will be at the bottom of the list: here you will find N7 Bracers, N7 Chest, N7 Helmet and N7 Leggings.

To research even a first level kit you will have to work hard. All research is performed using Milky Way Science Data Points. Please note: you will not be able to immediately research bracers or a breastplate of the fifth level; research must be carried out sequentially, starting from the first level.

Here is a list of all N7 armor pieces with the resources needed for research:

Bracers N7

First level of bracers: 50 scientific data
Second level bracers: 55 scientific data
Third level of bracers: 60 scientific data
Bracer level four: 65 scientific data
Fifth level of bracers: 70 scientific data

Bib N7

Chest Level 1: 100 Science Data
Chest level two: 110 science data
Chest level three: 120 science data
Chest level four: 130 science data
Breastplate Level 5: 140 Science Data

Helmet N7

Helmet Level 1: 50 Science Data
Helm level two: 55 science data
Helm level three: 60 science data
Helmet level four: 65 science data
Helm Level 5: 70 Science Data

Leggings N7

Leggings Level 1: 50 Science Data
Leggings Level 2: 55 Science Data
Leggings level three: 60 scientific data
Leggings level four: 65 scientific data
Fifth level of leggings: 70 scientific data

Is the research completed? Great, all that remains is to produce the necessary armor parts. You don’t need to go far from the terminal, just go from the Research section to the Development section.

To create N7 armor you will need four resources: copper, iridium, platinum and a container of omni-gel. Here is a list of all N7 armor parts with the resources required for production: