For obvious reasons, the Sun’s influence weakens as you get closer to the edge of the solar system. But things might be a lot ...

NASA's New Horizons found the solar wind slows as it nears interstellar space, helping improve models of the solar system's ...

The data obtained by Webb had two things that took researchers by surprise.

PARIS, France — An interstellar comet that blazed past the Sun last year could be nearly three times older than our Solar ...

On a clear night, it dominates the sky, bright enough to cast shadows and large enough for dark patches and surface features ...

I/ATLAS arrived fast, bright, and strange. When astronomers spotted it on July 1, 2025, they knew almost immediately this was no ordinary comet.

NASA works with scientists worldwide to advance our understanding of what hazards are in our solar system and how we can mitigate the risks.

The National Aeronautics and Space Administration has confirmed an interstellar object is passing through our solar system. The object is a comet hailing from the direction of the constellation ...

Interstellar comet 3I/ATLAS has spent the last several months on a tour of our solar system. NASA spacecraft and telescopes have snapped photos of this celestial visitor over the course of its journey ...

Based on the composition of gases spewed by the icy space rock, researchers estimate that our guest might be up to 12 billion ...

The New Horizons spacecraft sends back its sensational snapshots of Jupiter, and its volcanic moon Io, before the mission's close encounter with Pluto (Photo by: Photo12/Universal Images Group via ...

This week marks 48 years since the Sept. 5, 1977, launch of NASA's Voyager 1 spacecraft from Cape Canaveral, Florida, to study Jupiter and Saturn up close. Nearly a half-century later, Voyager 1 and ...