NASA image shows 'what happens when two galaxies become one'
NASA has shared an image captured by its Hubble Space Telescope that shows "what happens when two galaxies become one". The "twisted cosmic knot" is located about 250 million light-years away in the constellation Cancer (The Crab). Scientists theorise Milky Way will eventually resemble this galaxy when it collides with neighbouring galaxy Andromeda in 4 billion years' time, said NASA.