A new interstellar object has been spotted careening into the solar system at an extremely unusual, hyperbolic trajectory. If ...

For millennia, the way we found our way home has been using the stars. The tech we have sent towards those stars also uses ...

Artist's impression of Planet Nine – a suspected “wide-orbit” planet – with the Sun in the distance; Neptune's orbit is shown ...

Mercury is the month's highlight, reaching greatest elongation July 4. Also on show in the Southern Hemisphere: Mars, Saturn, ...

Can we really reach another solar system? This video explores how humanity might colonize Proxima Centauri B, our closest potentially habitable exoplanet, located in the Alpha Centauri system. We ...

Stars passing close to the sun could cause planets to collide, including with Earth, or even be ejected as rogue planets, new ...