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What is expected to happen to the Milky Way and the Andromeda galaxy in about 4 to 5 billion years?
Confirmed
They will collide and merge
Andromeda is approaching us at about 110 km per second. Stars are so spread out that few will actually hit each other.
Roughly how many galaxies are in the observable universe?About how much of the universe's total energy is the ordinary matter that makes up stars, planets and people?About how old is the universe?What is the cosmic microwave background?Roughly how much would a teaspoon of neutron star material weigh?About how old is the light we see from the Andromeda galaxy?