Comet 3I/ATLAS was full-on erupting into space in December 2025, after its close flyby of the sun, causing it to ...

The fate of a comet that was predicted to pass close to Earth remains a mystery five years after its dramatic breakup in the ...

The boundary of the Solar System remains somewhat poorly understood. We know we are within it, in a region of space called the heliosphere, where particles released by the Sun dominate. Beyond it, the ...

The Sun is now at the most active point in its roughly 11‑year solar cycle, and scientists say the current peak has arrived ...

Comet 3I/ATLAS is a visitor that will never call the solar system home. Identified on a one-way path that carries it in and back out of the Sun’s neighborhood, it offers a bright glimpse of material ...

A planetary system 116 light-years from Earth has a peculiar pattern. It could flip the script on how planets form, scientists say.

When NASA’s twin Voyager probes left Earth in 1977, they carried computers weaker than a hand calculator and a modest goal of ...

Close-up measurements from NASA’s Parker Solar Probe are giving scientists an unprecedented look at how the solar wind gains ...

Nearly 50 years after launch, a pair of aging spacecraft have stumbled into one of the strangest regions ever measured in ...

How big it is: 865,000 miles (1.392 million kilometers) across How far away it is: 93 million miles (150 million km) What type of star it is: A yellow dwarf star The sun is the star at the center of ...

A team of astronomers has identified a four-planet system orbiting the red dwarf star LHS 1903 that defies conventional expectations about how planets arrange themselves around their host stars. The ...