Latest about Solar System
How many times has Earth orbited the sun?
We worked out how many trips each of the solar system's eight planets has taken around the sun over the past 4.6 billion years.
A 'runaway star' could save Earth from extinction a billion years from now. Here's how.
Earth will become too hot to handle in a billion years. There's a (very) remote chance a passing star could save us by knocking our planet back into the habitable zone.
The sun may be smaller than we thought
New calculations suggest the sun is a few fractions of a percent smaller than previously estimated, and that could change how we study it.
'Rogue' star hurtling through the Milky Way won't smash into our solar system after all
A white dwarf spotted by the Gaia telescope was predicted to smash into our solar system in 29,000 years. But we'll be safe after all.
Volcanic 'devil comet' racing toward Earth resprouts its horns after erupting again
The massive volcanic comet 12P/Pons-Brooks, which grows giant horns when it erupts, has exploded for a third time in five months as it continues to race toward the sun.
Soar through the 'Labyrinth of Night' — a Martian canyon the size of Italy — in thrilling new satellite video
See Mars' geology up close, thanks to decades of stunning images from the Mars Express satellite, in a new visualization of Noctis Labyrinthus, the 'Labyrinth of Night'.
Potential discovery of a dozen objects beyond Pluto could reveal a new section of the solar system we never knew about
Astronomers may have detected a dozen large objects lurking beyond the Kuiper Belt at the edge of our solar system, suggesting there could be another equally massive, "second Kuiper Belt" hiding beyond the orbit of Pluto.
Green comet Nishimura survives its superheated slingshot around the sun. Will we get another chance to see it?
Comet Nishimura, which was only discovered in August, has survived its closest approach to the sun and will brighten over the next week. But is it still visible from Earth?
