NASA instruments aboard ESA's Rosetta mission helped reveal that comet 67P/Churyumov-Gerasimenko has its own aurora.

In a paper published in Nature Astronomy, researchers report the first ever clear images of nanojets.

It appears some pieces of asteroid Vesta ended up on asteroid Bennu, according to observations from NASA’s OSIRIS-REx spacecraft.

Jupiter's volcanically active moon Io casts its shadow on the planet in this dramatic image from NASA's Juno spacecraft.

Cassini mission data provides strong evidence that the northern hemisphere of the moon has been resurfaced with ice from its interior.

The twisting patterns created by the spiral arms of NGC 2835 create the illusion of an eye.

The Hubble image includes a new storm brewing on Jupiter, and a cousin of the famous Great Red Spot region gearing up to change color.

The Sun is stirring from its latest slumber. Sunspots and flares are bubbling from the Sun's surface – signs that a new solar cycle has started.

If greenhouse gas emissions continue apace, Greenland and Antarctica’s ice sheets could together contribute more than 15 inches to global sea level rise.

The Jupiter-size object is about seven times larger than the white dwarf. It circles this stellar cinder every 34 hours, more than 60 times faster than Mercury orbits our Sun.

Surveying sunspots is the most basic of ways we study how solar activity rises and falls over time, and it’s the basis of how we track the solar cycle.

Experts from NASA and NOAA discuss their analysis and predictions for the new solar cycle.