Solar System

NOAA shared new images taken by the world's first operational space-based coronagraph, CCOR-1, captured during a solar storm outburst.

We could expect even more eruptions from this sunspot region in the coming days as it rotates to face Earth.

Saturn has finally joined the solar system's other giant planets in possessing a Trojan asteroid, but it may have stolen it. The bouncing asteroid seems to have originated in the Kuiper belt.

While some are hoping for a bright "Halloween comet," astronomers say the speeding cosmic snowball has likely already broken apart.

Moon landing attempts are becoming so frequent that the players involved — private companies and government agencies alike — are learning from each other's efforts.

Comet A3 Tsuchinshan-ATLAS proved to be photogenic as it lit up the early autumn skies of the Northern Hemisphere this month.

The moon has been bombarded by asteroids and comets for more than 4.32 billion years.

The cloud is basically a gigantic reservoir that may hold billions of icy celestial bodies. Two of those bodies will pass by Earth in the days leading up to Halloween.

In 2006, the International Astronomical Union (IAU) famously demoted Pluto to a dwarf planet. Things have been a bit of a mess since then — so is it time to redefine the planet?

Scientists say they've uncovered where the vast majority of Earth's meteorites came from.