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

But researchers have just demonstrated that once you are far away from the planets of the Solar System, there might be a ...

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 ...

Nearly 400 years ago, Galileo looked at the Pleiades star cluster through his telescope and noticed that the seven or so ...

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