Alien comet Borisov shed ‘millions of gallons of water’

NASA’s Neil Gehrels Swift Observatory tracked the water loss of comet 2I/Borisov during its approach and swing around the sun in 2019.The comet "produced enough water to fill a standard bathtub in 10 seconds," on average, according to NASA's Goddard Space Flight Center. Related: Strange ingredient in interstellar Comet Borisov offers a clue to its origins: https://www.space.com/interstellar-comet-2i-borisov-strange-composition-discovery.html Credit: NASA's Goddard Space Flight Center Scott Wiessinger (USRA): Lead Producer Jeanette Kazmierczak (University of Maryland College Park): Lead Science Writer Francis Reddy (University of Maryland College Park): Science Writer Scott Wiessinger (USRA): Lead Animator Zexi Xing (University of Hong Kong): Scientist Dennis Bodewits (Auburn University): Scientist