comets

Comets, novas and the Mayans — Science News, June 30, 1973 Did the Mayans record novas and comets? … Comparing dates of known historic novas and comets with Mayan dates,…

In 2017, a mysterious comet dubbed 'Oumuamua fired the imaginations of scientists and the public alike. It was the first known visitor from outside our solar system, it had no bright coma or…

Nearly a hundred different types of amino acids have been observed in meteorites, but only a dozen of the 20 that are essential for life have been found. Biological amino acids also have a…

“This is the first time we’ve actually attempted to move something in our solar system with the intent of preventing a natural disaster that has been part of our planet’s history from the…

Comets from the solar system’s deep freezer often don’t survive their first encounter with the sun. Now one scientist thinks he knows why: Solar warmth makes some of the cosmic…

The samples from the Ryugu asteroid brought back by Hayabusa-2, an exploration spacecraft sent by the Japanese Aerospace Exploration Agency, could be the most contaminant-free rocks from…

NASA and the Psyche team declined interview requests until an independent review of the mission delay has been completed. Agency officials will make a decision about next steps based on that…

Gigantic asteroids have smashed into the Earth before—RIP dinosaurs—and if we’re not watching out for all those errant space rocks, they could crash into our world again, with devastating…

The asteroid is expected to reach its closest point to Earth on March 4 at 2:59 am Eastern Time. An asteroid termed as “potentially hazardous” by astronomers is relatively close, but safe,…

The rapid decline of the Hopewell culture about 1,500 years ago might be explained by falling debris from a near-Earth comet that created a devastating explosion over North America, laying…