Astronomers have announced the discovery of a monumental interstellar object, designated 3I/Atlas, believed to be the largest ...

A mysterious cosmic traveler has found its way to the Solar System from the uncharted reaches of interstellar space. The rare ...

I/ATLAS, earlier known as A11pI3Z, is only the third interstellar visitor to be discovered passing through our corner of the ...

Comet 12P/Pons-Brooks is visiting now, ... This diagram from the European Space Agency (ESA) shows the orbit of comet 12P/Pons-Brooks around the Sun, and its location on March 14, 2024. ESA.

The two largest comets to visit past the orbit of Saturn were both around 60 miles across, while most were much, much smaller. “We find a lot of comets on very similar orbits, but they're ...

The meteoroid stream of long-period comet Thatcher (white line). Each meteoroid moved on its own orbit and created a Lyrid shower meteor when it hit Earth after approaching the orbit of Earth (blue ...

As Halley swings around the Sun every 75 years or so, the path it traces is at just the right angle that it intersects with Earth's orbit twice. This diagram shows the two points when Earth passes ...

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.

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 ...

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 ...