A solar flare is a burst of radiation on the sun, according to NASA. They are the most powerful explosions in the solar system, with the biggest ones having as much energy as a billion hydrogen bombs.

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

A diagram of the heliosphere shows the solar system with the solar wind and sun ... and primary mission yet were still in good health. NASA kept them going, albeit after turning off instruments ...

The Oort cloud — the mysterious shell of icy objects at the edge of the solar system — might sport a ... miles (1.6 million ...

Turns out, it's as tough to drop inward into the inner solar system, as it is to head outward ... The mission would take advantage of NASA's Advanced Solar Sail Concept. The mission uses the ...