Now, in a study published Wednesday, the odd orbit of 'Oumuamua can be explained by a simple physical mechanism that's probably common among many icy comets: outgassing of hydrogen as the comet ...

You have just a few weeks left to view the "comet of the century" making its 80,000-year orbit around Earth. Comet C/2023 A3 Tsuchinshan–ATLAS will be visible with the naked eye from Earth until ...

But ‘Oumuamua was much smaller than your typical comet, at just over 100 meters across, and when it was first observed, it didn’t have a tail and didn’t seem to be ejecting water.

You have just a few weeks left to view the "comet of the century" making its 80,000-year orbit around Earth. Comet C/2023 A3 Tsuchinshan–ATLAS will be visible with the naked eye from Earth until ...

This new orbit, which takes 160,000 years for a round trip, has the comet snaking its way through our solar system in a way that makes it visible for stargazers in the southern hemisphere. But for ...

The comet will be then be 472.2 million miles (759.8 million km) beyond the orbit of Neptune, the most distant known planet. You may like The Eta Aquarid meteor shower peaks May 6.

You have just a few weeks left to view the "comet of the century" making its 80,000-year orbit around Earth. Comet C/2023 A3 Tsuchinshan–ATLAS will be visible with the naked eye from Earth until ...

You have just a few weeks left to view the "comet of the century" making its 80,000-year orbit around Earth. Comet C/2023 A3 Tsuchinshan–ATLAS will be visible with the naked eye from Earth until ...