Is there a massive undiscovered planet on the outer reaches of the solar system? The idea has been around since before the ...

Could other inner planets host life - or have hosted it in the past? This episode examines scientific data on Mars’s ancient ...

It may be that remnants of Mercury precursor materials still remain among meteorite parent bodies somewhere in the inner solar system, so the possibility that these two meteorites sample such ...

By Jacopo Prisco, CNN (CNN) — Researchers suspect that two meteorites found in the Sahara Desert in 2023 may originally have come from Mercury, which would make them the first identified ...

By Jacopo Prisco, CNN (CNN) — Researchers suspect that two meteorites found in the Sahara Desert in 2023 may originally have come from Mercury, which would make them the first identified fragments of ...

A snapshot of the orbit of 3I/ATLAS (light blue) through the solar system. The concentric rings at the centre depict the orbits of the solar system’s inner planets.

Embark on a thrilling journey through our Solar System, exploring the inner planets and space travel possibilities. We start with an introduction to the incredible potential of space travel and ...

An "interstellar object" is speeding toward the inner solar system, where Earth is located, astronomers have confirmed.

Update: July 3, 09:24 a.m. ET: On Wednesday, July 2, the International Astronomical Union’s Minor Planet Center confirmed that an interstellar object is traveling through our solar system.

3I/ATLAS, earlier known as A11pI3Z, is only the third interstellar visitor to be discovered passing through our corner of the galaxy.