Puzzling Near-Earth Asteroid Revealed as Comet with Weak Tail

Astronomers have reclassified the near-Earth object (875163) 1998 SH2 as a comet following observations that revealed outgassing, a process previously masked by its asteroid-like appearance. According to research published in Nature Astronomy by Dr. Davide Farnocchia and his team at NASA’s Jet Propulsion Laboratory, the object’s unexpected orbital deviations confirmed it is venting gas, leading … Read more

Water Transport in Mercury’s Transient, Impact-Generated Atmosphere

For decades, astronomers have puzzled over how Mercury—a scorched world orbiting mere millions of miles from the Sun—manages to harbor water ice in its polar regions. A groundbreaking new study published via arXiv provides a compelling answer: the planet is essentially a cosmic trap, expertly hoarding water delivered by cometary impacts. The Comet Connection: How … Read more

Interstellar Comet Gave Scientists Their First Taste of Alien Water

Interstellar Comets Unlock the Secrets of Alien Planet Formation: What 3I/ATLAS Reveals About Our Cosmic Origins — ### A Cosmic Time Capsule: How 3I/ATLAS Challenges Our Understanding of Solar System Birth In late 2025, astronomers made a discovery that could rewrite the story of how planetary systems—including our own—are born. Comet 3I/ATLAS, an interstellar visitor … Read more