which is why it's taken such a long journey -- and long time -- to swing by Earth again, according to The Planetary Society. A green comet will appear in the night sky this week, for the first ...

In February 2025, conditions were just right to catch a "planetary party" above the European Southern Observatory's (ESO) ...

Any telescope on the planet can contribute to planetary defense: If an astronomer anywhere on Earth spies an object that looks like an asteroid (or comet), they can report its findings to the ...

The comet on January 21 over Punta de Lobos, Chile. Photo: Wikimedia The comet descends over the Earth's atmosphere, viewed from the ISS on January 10. Photo: Иван Вагнер ...

In a rare 'planetary parade', all seven planets will align and be visible from Earth. Best of all, you don't even need a telescope or any special equipment to see our solar system in its full glory.

Londoners will have a rare chance to glimpse a "planetary parade" on Friday evening, as seven planets line up in the night sky.