Using a newly developed adaptive optics system called Cona, scientists peered through Earth's turbulent air to reveal the sun ...

As it orbits the sun once every 25,000 years, the celestial body 2017 OF201 travels beyond the Kuiper Belt into a region ...

U.S. astronomers hunting for "Planet Nine" have instead stumbled on what appears to be a new dwarf planet in the solar system's outer reaches.

The object’s aphelion – the farthest point on the orbit from the Sun – is more than 1,600 times that of the Earth’s orbit,” said Sihao Cheng of the Institute for Advanced Study, discussing the ...

A new 8K camera system at the Vacuum Tower Telescope in Tenerife captures images of the Sun's surface in stunning detail.

A new member of the solar system has been detected, the second-largest of its kind, suggesting there may be more like it ...

A powerful new optics system has captured the clearest view yet of the Sun’s corona, revealing stunning plasma structures.

It's an evocative idea that has long bedeviled scientists: a huge and mysterious planet is lurking in the darkness at the ...

Learn about the recently discovered trans-Neptunian object that may eventually join Pluto as a dwarf planet, found at the ...

Astronomers have announced the discovery of a new dwarf planet in our solar system, named 2017 OF201. Located far beyond ...

The discovery of water ice around a distant star is allowing scientists to study how the key ingredient for life is delivered ...