SUN

Ancient Mars could have had enough water to fill up a large ocean and many rivers flowing into it.

Coal, petroleum and natural gas are the most important energy resources today.

Thanks to a strong year of releases, Pokémon parent company, the Pokémon Co., saw a hefty bump in annual profit.

Events on Earth like tornadoes and earthquakes are nothing compared to the dangers of our solar system, our galaxy and our universe.

Wednesday's NASA announcement was also a ceremony honoring Eugene N. Parker, for whom mission to the sun was renamed.

A massive planet with rings larger than Saturn’s keeps eclipsing its young star and might have moons that are the right temperature to support alien life.

'Pokeland' will have players on iOS and Android devices collecting and training Pokémon while also battling other Pocket Montsers in the wild.

NASA will be making a live announcement Wednesday morning about its mission to the sun.

A NASA craft that studies the sun captured a partial solar eclipse Thursday.

Jupiter has such powerful auroras because they come from volcanoes erupting on its moon Io, rather than the sun’s storms that create northern lights on planet Earth.

What could the sun possibly be if not fire?

Comets may have delivered Earth’s atmosphere while it was forming and made it the planet we love today.

Astronomers say this new planet they found is like Jupiter but much hotter, and that makes for some freaky clouds and weather patterns.

Jupiter’s enormous swirling red storm, its Great Red Spot, is shrinking so much that it is changing shape and could soon be the size of Earth.

A binary star exploded in a supernova and showered its only friend in calcium.

Eruptions on the sun look very different, but they might all be produced the same way — with energy bursting through a magnetic field.

In order to turn the Sun into a black hole, you must compress all of the matter you see in the flaming ball of plasma above into a certain size.

Meet Steve, the purple streak of light that appears during the aurora borealis and, until recently, stumped astronomers.

Streams of the Sun’s garbage do beautiful things like create auroras, but they can also change the electricity in Earth’s atmosphere.

A large asteroid is going to get pretty close to Earth this month for the first time in hundreds of years.

Physicists at the Princeton Plasma Physics Laboratory have provided an answer to why the phenomenon, wherein oppositely directed magnetic field lines in plasma can break apart and reconnect, occurs much faster than theory says it should.