Admin Table of Contents
- 1 Does the Milky Way have companions?
- 2 How many companion galaxies Does the Milky Way have?
- 3 Is the Milky Way in the Virgo supercluster?
- 4 Does the Milky Way contain earth?
- 5 Is Andromeda the sister of our galaxy?
- 6 Who discovered that the Milky Way is just one galaxy?
- 7 How many stars are there in the Milky Way galaxy?
Does the Milky Way have companions?
Our Milky Way galaxy is host to a number of companions. These companions are gravitationally bound to the Milky Way and are stellar systems in their own right. They include a population of some 30 dwarf satellite galaxies (DSGs) and about 150 globular clusters (GCs).
What are the 3 galactic neighbors of the Milky Way?
List
| # | Galaxy | Notes |
|---|---|---|
| 1 | Canis Major Dwarf | Satellite of Milky Way (accretion by Milky Way) |
| 2 | Draco II | Satellite of Milky Way |
| 3 | Tucana III | Satellite of Milky Way that is being tidally disrupted |
How many companion galaxies Does the Milky Way have?
While most satellite galaxies are dwarf galaxies, satellite galaxies of large galaxy clusters can be much more massive. The Milky Way is orbited by about fifty satellite galaxies, the largest of which is the Large Magellanic Cloud.
What is the Milky Way sister galaxy?
The Andromeda Galaxy (M31) is one of the most famous of all deep-sky objects. It lies 2.5 million light-years away in the constellation Andromeda the Princess. Astronomers think the mass of M31 is roughly the same as that of the Milky Way, about 1 trillion suns.
Is the Milky Way in the Virgo supercluster?
The Virgo Supercluster (Virgo SC) or the Local Supercluster (LSC or LS) is a mass concentration of galaxies containing the Virgo Cluster and Local Group, which in turn contains the Milky Way and Andromeda galaxies.
Is irregular a galaxy?
Irregular galaxies have no particular shape. They are among the smallest galaxies and are full of gas and dust. Having a lot of gas and dust means that these galaxies have a lot of star formation going on within them. This can make them very bright.
Does the Milky Way contain earth?
Earth is in the second largest galaxy of the Local Group – a galaxy called the Milky Way. The Milky Way is a large spiral galaxy. Earth is located in one of the spiral arms of the Milky Way (called the Orion Arm) which lies about two-thirds of the way out from the center of the Galaxy.
Do satellite galaxies have planets?
These less massive galaxies have their own impressive collection of stars, which all orbit their own center; but the galaxies and everything in them orbit our galaxy too. It’s as if our galaxy is the sun and those other galaxies are planets. Astronomers call them “satellite galaxies.”
Is Andromeda the sister of our galaxy?
M32p is a hypothesized former galaxy that was incorporated into the Andromeda Galaxy. It was a sister galaxy to the Milky Way and Andromeda galaxies, previously the third or fourth largest galaxy in the Local Group, and was merged into the larger Andromeda Galaxy an estimated 2 billion years ago.
How far away is our sister galaxy?
| Andromeda Galaxy | |
|---|---|
| Declination | +41° 16′ 9″ |
| Redshift | z = −0.001001 (minus sign indicates blueshift) |
| Helio radial velocity | −301 ± 1 km/s |
| Distance | 765 kpc (2.50 Mly) |
Who discovered that the Milky Way is just one galaxy?
Following the 1920 Great Debate between the astronomers Harlow Shapley and Heber Curtis, observations by Edwin Hubble showed that the Milky Way is just one of many galaxies. The Milky Way is a barred spiral galaxy with an estimated visible diameter of 100,000–200,000 light-years.
Is the Milky Way going to collide with the Andromeda Galaxy?
NASA’s Hubble Shows Milky Way is Destined for Head-On Collision. 05.31.12. NASA astronomers announced Thursday they can now predict with certainty the next major cosmic event to affect our galaxy, sun, and solar system: the titanic collision of our Milky Way galaxy with the neighboring Andromeda galaxy.
How many stars are there in the Milky Way galaxy?
As a comparison, the neighboring Andromeda Galaxy contains an estimated one trillion (10 12) stars. Perhaps, the Milky Way may contain ten billion white dwarfs, a billion neutron stars, and a hundred million black holes. Filling the space between the stars is a disk of gas and dust called the interstellar medium.
Where is the Milky Way located in the night sky?
The Milky Way arching at a high inclination across the night sky. (This composited panorama was taken at Paranal Observatory in northern Chile). The bright object is Jupiter in the constellation Sagittarius, and the Magellanic Clouds can be seen on the left. Galactic north is downward.