Researchers make new discovery about the interstellar comet 3I/ATLAS: it was born in extreme cold, has a high concentration of deuterium, is the oldest interstellar visitor ever detected, and may reveal what the Universe was like right after the Big Bang.

Researchers make new discovery about the interstellar comet 3I/ATLAS: it was born in extreme cold, has a high concentration of deuterium, is the oldest interstellar visitor ever detected, and may reveal what the Universe was like right after the Big Bang. – Space