It will be a while before you can see it for yourself, however. Halley’s comet was last visible from Earth in 1986, meaning ...

Comet C/2025 A6 (Lemmon) is this year’s brightest comet visible from Earth—an icy relic from the solar system’s origins that ...

The interstellar object hurtling toward the inner solar system, where Earth is located, is much larger than previously ...

A rare, green-glowing comet will make its closest approach to Earth next week — and it won’t return for more than a thousand ...

The European Space Agency's two Mars orbiters take their shot at getting pictures of the exotic interstellar comet 3I/ATLAS.

Comet C/2025 R2 (SWAN) is a new visitor from our outer solar system. It may be easier to see as it approaches Earth next week.

We're just weeks away from this interstellar visitor reaching its brightest in Earth's night skies. Will we see it?

Water is the universal yardstick of comet science, the baseline for measuring how sunlight drives a comet's activity and ...

Analyses of its emissions using NASA’s Neil Gehrels Swift Observatory indicate that the interstellar comet probably has a very different structure than comets in the solar system.

The Orionid meteor shower peaks this year with the arrival of a new moon, offering a rare chance to see shooting stars ...

Harvard researcher Avi Loeb says comet 3I/ATLAS weighs 33 billion tons and spans 3.1 miles, making it far larger than ...

NASA’s Perseverance rover has been exploring the surface of Mars for evidence of ancient microbial life since 2021, but it’s ...