It is only the third such object to have been identified as having an interstellar origin, which means it did not begin its ...

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

On July 2, 1985, the European Space Agency launched the Giotto space probe to get a close-up look at Halley's Comet. Nearly ...

The eta Aquariids are just the first of two meteor showers that we see each year from Halley's Comet. Most comets tend to pass near Earth's orbit only once during each of their passes around the Sun.

This diagram shows the two points when Earth passes near the path of Halley's comet, in May and October each year. Arrows indicate which direction the comet debris is travelling during each period of ...

"In our case, if we consider the Sun fixed at the center, we don't see that this is all that's happening." Schematic diagram showing how the inclination of the comet orbit changes when the comet moves ...

Just like Earth, comets also spin on an axis (or sometimes tumble on multiple axes, like a wobbly, spinning top, but that’s a topic for another day!) as they orbit the Sun.

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 ...