There are 35 galaxies in the so-called "Local Group" The three largest galaxies are the Milky Way (our own), and the Andromeda and Triangulum galaxies. However, most of the visible stars we see are part of the Milky Way and two nearby dwarf galaxies, the "Small Magellanic Cloud" and the "Large Magellenic Cloud". There are 10 other dwarf galaxies near the Milky Way.
The only way we can study distant parts of the universe is through photons emitted from those regions. By definition, if it is "dark" then we cannot study it. W can only study its interactions with light that we can see.
The most abundant gas in the universe is hydrogen. Hydrogen atoms make up about 75% of the universe's elemental mass.
Galaxies come in a number of forms and are very distant being that our own galaxy is 100,000 light years across, meaning traveling at the speed of light it takes one hundred thousand years to traverse [travel across], and then between our galaxy and others there are hundreds of thousands of light years. Generally, like stars, we use light wavelengths to determine the makeup, distance and speed of galaxies, whereas for the way they look we use varying wavelengths of energy, gamma rays, x-rays, infrared, ultraviolet and so on to get varying appearances of the distant objects and hopefully get a good idea of what they look like.
They can't. The universe is only about 13 billion years old. If there are galaxies a trillion light years away their light has not reached us yet and due to the expansion of the universe, never will. At the edge of what we call the observable universe we cannot make out individual stars, but we can detect galaxies using infrared telescopes.
A collection of galactic groups form a cluster of galaxies. A supercluster is the largest known structure. Galaxies can exist outside of a group or cluster, but the estimated amount is only about 5%. However, there is a possibility that these galaxies may have interacted or merged with other galaxies in the past,
The question is essentially nonsense. The universe is the universe. It contains galaxies. There's no underlying "structure" to how the galaxies fit together, so it's more or less meaningless to talk about "how they make up the universe."
There are 35 galaxies in the so-called "Local Group" The three largest galaxies are the Milky Way (our own), and the Andromeda and Triangulum galaxies. However, most of the visible stars we see are part of the Milky Way and two nearby dwarf galaxies, the "Small Magellanic Cloud" and the "Large Magellenic Cloud". There are 10 other dwarf galaxies near the Milky Way.
The galaxy, the one we are in, we call the Milky Way. It is one of billions of galaxies. These galaxies and everything else make up the universe. Compared to the universe galaxies are small fry.
No. Because it will be impossible for astronomers to make an atlas of at least 100 billion galaxies in the observable universe.
All bodies: from Supergiant stars like Deneb or Betelgeuse, galaxies, galactic clusters, and super clusters, to molecules, atoms, baryons and mesons, and quarks. All forms of matter are part of the universe.Furthermore, since mass and energy are equivalent and matter-antimatter pairs can appear spontaneously (though usually fleetingly), even energy can be considered as a "body" that makes up the universe.
No, because it will be impossible for astronomers to make a 3D panoramic view of all 100 billion galaxies in the observable universe.
Question does not make any sense.
The only way we can study distant parts of the universe is through photons emitted from those regions. By definition, if it is "dark" then we cannot study it. W can only study its interactions with light that we can see.
The amount of stars in the Universe is not know. The visible Universe has several hundred billion galaxies, each of which, on average, has perhaps a hundred billion stars or more. Even the exact shape of the Universe is an area of current research. In any case, it does seem that the Universe is much bigger than it was believed a few decades ago.
I don't think anybody has enough information about 100 billion galaxies to do that. The current estimate, that the observable Universe has about 170 billion galaxies, is simply based on observing a small sample of the sky.
No, because it will be impossible for Hubble make a 3D map of at least 100 billion galaxies (i.e. 60 billion spiral and barred spiral galaxies, 20 billion lenticular galaxies, 15 billion elliptical galaxies, and 5 billion irregular/peculiar galaxies) in the observable universe, at distances up to 13 billion light-years; since the observable universe is 13.7 billion light-years in diameter.