For centuries, humans have gazed at the stars, trying to understand what lies beyond the familiar planets we know. From Mercury’s blazing orbit near the Sun to Neptune’s icy edge, our Solar System has ...

Researchers may have discovered a gas giant orbiting the star Alpha Centauri A, and it appears to be in the star's habitable zone. Reading time 3 minutes Exoplanet hunters have had an eye on Alpha ...

Planets are usually defined by the star they orbit. Take away the star, and a planet becomes almost impossible to find. This is because almost every method astronomers use to detect planets depends on ...

Astro photographer Josh Dury, 27, of Somerset, England, managed the rare feat of capturing all of the planets in one photo during a recent alignment. Josh Dury / SWNS See more of our coverage in your ...

Growing up, I was taught that there were nine planets in the solar system. That all changed in 2006, when the International Astronomical Union voted to demote Pluto’s status to that of dwarf planet.