Jupiter is already the biggest planet by far in our solar system, but new research suggests it was somehow once even larger than it is now. Twice as large, in fact. To put that into context, those ...

Are planets in the solar system that are closer to the Sun older than the ones further away? – Gavriel, age 10, Paducah, Kentucky A cloud of collapsing gas created our Sun, the first thing to form in ...

BRITS are clueless about our solar system – with four in 10 unable to identify the biggest planet and a quarter uncertain ...

The fact that our solar system has eight planets (unless you’re a Pluto apologist) is one of the first things we learn in our educational journey (anyone remember the “Blue’s Clues” planet song?). But ...

In A Nutshell Inner Solar System origins: By measuring iron isotopes in Moon rocks and meteorites, researchers determined ...

Mercury is the innermost and smallest of the eight major planets in our Solar System, orbiting closest to the Sun. Though ...

Astronomers have discovered icy rocks in the outer solar system that seem to defy the laws of physics, suggesting the ...

In 2006, updated research led to Pluto being controversially demoted to dwarf planet status by the International Astronomical Union. The reasoning was that Pluto's location in the far-flung ...

Carbon dioxide has been detected on a planet outside our solar system for the first time. The gas has been observed directly by the James Webb Space Telescope on four exoplanets, all belonging to the ...

Astronomers have discovered seeds of rocky planets forming in the gas around the baby sunlike star providing *** peek into the start of our own solar system. The the thing that we've discovered is ...

"We reference the planets as symbols to better understand our lives," PEOPLE's resident astrologer Kyle Thomas says Skyler Caruso is a Writer and Reporter of PEOPLE Digital Entertainment. She joined ...