Two galaxies have been seen merging 13 billion years ago, less than a billion years after the Universe was born

Two galaxies have been seen merging 13 billion years ago, less than a billion years after the Universe was born
NASA’s Spitzer Space Telescopes has been watching galactic collisions unfold and understand what it means for their future
ESA’s Gaia found evidence in the night sky that points to the fact our galaxy did not form alone
Analysis of the ‘butterfly’ galaxy NGC 6240 shows black hole ejections and stellar winds stop the birth of new stars
Fewer than ten of these double gigantic high-gravity objects were known previously
The galactic version of David and Goliath, reveal how these gigantic structures coalesce
This detection of miniature orbital motion could be the missing evidence in the galaxy formation theory