Published 11 days ago • loading... • Updated 10 days ago
Interstellar Comet 3I/ATLAS Came From an Extremely Cold, Lonely Region of the Milky Way Galaxy, New Research Suggests
Scientists said the comet contains unusually high deuterium, a chemical clue that points to formation in an extremely cold, isolated part of the Milky Way.
Astronomers analyzed the vapors coming off the comet when it neared the sun and found it had a lot of "heavy" water. That hints it grew up in a frigid planetary system, possibly before its home star formed