A team of researchers has for the first time captured what it looks like when two galaxies are in the final stages of merging together, with the powerful collision of their two supermassive black holes causing ripples in the very fabric of space-time.
This kind of collision is expected to happen to our own Milky Way galaxy and the nearby Andromeda galaxy in a few billion years, as shown in the video above, which was released by NASA in May.
