Is Andromeda a large galaxy?
The Andromeda Galaxy is the largest galaxy of the Local Group, which, in addition to the Milky Way, also contains the Triangulum Galaxy and about 30 other smaller galaxies.
How big is the Andromeda galaxy in the sky?
| Andromeda Galaxy | |
|---|---|
| Mass | (1.5±0.5)×1012 M ☉ |
| Number of stars | ~1 trillion (1012) |
| Size | ~220 kly (67 kpc) (diameter) |
| Apparent size (V) | 3.167° × 1° |
How long would it take humans to get to the Andromeda galaxy?
Andromeda is 2,538,000 light years away, and at the speed of light, at which none other than light can travel, it would take 2.54 million years to just get there. The average human lifespan is 71 years.
Is Andromeda a dwarf galaxy?
The Andromeda Galaxy (M31) has satellite galaxies just like the Milky Way. Orbiting M31 are at least 13 dwarf galaxies: the brightest and largest is M110, which can be seen with a basic telescope….Andromeda Galaxy’s satellites.
| Name | NGC 147 |
|---|---|
| Right Ascension** | 00h 33m 12.131s |
| Declination** | +48° 30′ 32.82″ |
| Magnitude | +12 |
Is Andromeda getting closer?
The Andromeda Galaxy (M31) is indeed approaching us, by about 300 kilometers (190 miles) per second measured with respect to the Sun. The two galaxies will merge a few billion years from now. This is normal. Neighboring galaxies are bound into clusters by their mutual gravitational attraction.
At what speed is this galaxy approaching the earth?
The Andromeda galaxy is currently racing toward our Milky Way at a speed of about 70 miles (110 km) per second. Ultimately, the two galaxies will collide and merge.
What is the nearby galaxy?
The closest known galaxy to us is the Canis Major Dwarf Galaxy, at 236,000,000,000,000,000 km (25,000 light years) from the Sun. The Sagittarius Dwarf Elliptical Galaxy is the next closest , at 662,000,000,000,000,000 km (70,000 light years) from the Sun.
How big is the Andromeda Galaxy in terms of stars?
The Andromeda Galaxy has a diameter of about 220,000 ly (67 kpc ), making it the largest member of the Local Group in terms of extension, if not mass. The number of stars contained in the Andromeda Galaxy is estimated at one trillion ( 1 × 1012 ), or roughly twice the number estimated for the Milky Way.
Is the Andromeda Galaxy part of the local group?
Both galaxies, together with 52 other, are part of the Local Group, one of many distinct groups of galaxies that are gravitationally bound to each other. The majority of the galaxies in the Local Group are dwarf galaxies orbiting the three largest –Andromeda, Milky Way and Triangulum.
When does the Milky Way and Andromeda collide?
It is thought that the Milky Way and Andromeda will collide several billion years from now. The black holes located in both galaxies will then reside in the large, elliptical galaxy that results from this merger. These results are available online and will be published in the June 20th issue of The Astrophysical Journal.
Why is the Andromeda Galaxy a big target for Hubble?
Because the galaxy is only 2.5 million light-years from Earth, it is a much bigger target in the sky than the myriad galaxies Hubble routinely photographs that are billions of light-years away. This means that the Hubble survey is assembled together into a mosaic image using 7,398 exposures taken over 411 individual pointings.