https://www.smithsonianmag.com/smart-news/billions-of-years-ago-venus-may-have-had-a-moon-which-the-planet-promptly-gobbled-up-study-suggests-180989510/
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“(Mercury is the other.) NASA / JPL-Caltech Earth’s next-door neighbor Venus is often called our twin .”
“The growing distance is caused by our planet’s relatively fast rotation, whose energy pushes the moon away.”
“Billions of Years Ago, Venus May Have Had a Moon—Which the Planet Promptly Gobbled Up, Study Suggests Skip to main content Search Shop Newsletters Renew Give a Gift Subscribe Membership i Subscribe Give a Gift Renew Sections Smart News History Science Innovation Arts & Culture Travel At the Smithsonian More from Smithsonian magazine Newsletters Photo Contest Podcast Videos Our Partners Smithsonian Store Smithsonian Journeys Subscribe to Smithsonian magazine and get a FREE tote.”
“Scientists suspect it once had one, since space rocks pelted the planet during the solar system’s youth some 4.5 billion years ago.”
“Kane agrees it’s a challenging undertaking.”
“Louis who did not participate in the study, tells New Scientist ’s Jonathan O’Callaghan.”
“Evidence might also be hiding beneath Venus’ surface, according to a statement .”
“Specifically, Venus would have needed “a day shorter than about 12 hours” when the satellite formed, Kane tells Space.com ’s Robert Lea.”
“The researchers initially simulated the evolution of Earth and our moon to confirm that their models could correctly represent a well-understood system.”
“Overall, the simulations indicated that the more massive the moon, the faster it met its death.”
“Now, a team of researchers is proposing a new idea: If Venus ever had a moon, the planet would have promptly gobbled it up.”
“Rather, it suggests that if one ever existed, it wouldn’t have stuck around for long.”
“The two planets feature similar sizes, masses and structures.”
“One glaring difference between these siblings, however, is that Venus lacks a moon.”
““Finding direct observational evidence is pretty tough,” he tells Space.com , but argues indirect strategies are available.”
“But some think the second planet from the sun lost its hypothetical satellite in a subsequent crash; another incoming rock may have destroyed it.”
“Researchers could attempt similar measurements on Venus.”
“Still, that’s difficult to verify, Paul Byrne , a planetary geologist at Washington University in St.”
“The findings have implications for whether the planet once had the conditions to host life.”
“Billions of Years Ago, Venus May Have Had a Moon—Which the Planet Promptly Gobbled Up, Study Suggests Scientists have puzzled over why the planet dubbed “Earth’s twin” doesn’t have a moon.”