SUN

UGC 12591 is a massive galaxy chain that stretches for hundreds of millions of light-years.

As long as the weather cooperates, the astronomical event will be clearest from the southern tip of South America to Africa and the Antarctic.

The Gamma-Ray Imager/Polarimeter for Solar flares had been sent up in a helium-filled balloon Jan. 19, 2016, and then cut down 12 days later. It had been sitting on the icy plains since.

NASA experts are holding a press conference to unveil new information about exoplanets, which are planets that revolve around a star other than our Sun. Watch the NASA live stream here.

Formerly the ninth planet but demoted to dwarf status a decade ago, Pluto was discovered 87 years ago.

The probe will have to withstand temperatures of 2,500 degrees Fahrenheit, but it will get closer to the sun than any spacecraft ever has before.

A lunar eclipse, snow moon and comet will all be visible in the sky Friday evening.

According to reports, the two are taking their relationship seriously as the prince introduced his girlfriend to some of the royal family members.

According to a new study, a low-mass supernova roughly 12 times heavier than our sun may have triggered a gravitational collapse that eventually created our solar system.

The findings of a new study suggest radioactive decay rates — long considered physical constants — are more variable than previously thought.

'Pokemon Sun and Moon' has a lot of new features to enjoy and we compiled the five best new features and what they do in 'Sun and Moon.'

With 'Pokemon Sun and Moon' released, trainers may wonder which new Pokemon are the best. We compiled 5 of the best New Pokemon in 'Sun and Moon.'

The valley, which is larger than the Grand Canyon, most likely formed as a result of Mercury’s single outer crust plate contracting and bending.

The rotation of stars creates centrifugal force, which tends to flatten them from the poles and out of their spherical symmetry.

The particles, discovered as part of NASA’s THEMIS mission, were found being accelerated to nearly the speed of light in the foreshock region, which lies just beyond Earth’s magnetic field.

The rare stars rotate at dizzying speeds, which affects their shape and produces X-rays more than 100 times of the sun at its maximum.

Using computer simulations to model the formation of planets around low-mass stars, astrophysicists argued that these stars may be hosting planets containing large amounts of water.

2014 UZ224 is roughly 8.5 billion miles from the sun and completes one orbit in 1,100 Earth years.

Project Blue plans to launch its lightweight telescope into space by the end of the decade to take the first picture of an Earth-like planet.

NASA launched the miniature satellite from the International Space Station on May 16 to study soft X-rays that affect Earth’s upper atmosphere.

Our local part of the Milky Way is much larger than astronomers previously believed.