GK
THE UNIVERSE
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Question
[CLICK ON ANY CHOICE TO KNOW THE RIGHT ANSWER]
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When we see the Andromeda galaxy, we are seeing it as it was 2.3 million years ago. Why?
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it takes light that length of time to travel
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light travels really slow in outer space
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light travels faster than sound
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it is an ancient galaxy
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Explanation:
Detailed explanation-1: -The Andromeda Galaxy (IPA: /ænˈdrɒmɪdə/), also known as Messier 31, M31, or NGC 224 and originally the Andromeda Nebula, is a barred spiral galaxy with the diameter of about 46.56 kiloparsecs (152, 000 light-years) approximately 765 kpc (2.5 million light-years) from Earth and the nearest large galaxy to the Milky Way.
Detailed explanation-2: -According to simulations, the remnant will look like a giant elliptical galaxy, which is a blob-like galaxy without discernible spiral arms or an internal structure. Andromeda galaxy contains about one trillion stars and the Milky Way contains about 300 billion.
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