Astronomy news today is packed with discoveries about the Sun, including tiny solar loops and hidden engines that drive solar ...

On October 6 1995, at a scientific meeting in Florence, Italy, two Swiss astronomers made an announcement that would transform our understanding of the universe beyond our solar system. Michel Mayor ...

A new study suggests yet another theory for a possible extra planet in our solar system, likely of a size between Mercury and ...

Space weather isn’t referring to rain clouds that float through the galaxy. Instead, it’s caused by massive explosions of particles that shoot out from the Sun.

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Astrophysicist and author Neil deGrasse Tyson explains the theory behind the growing evidence about a possible hidden planet in the Kuiper Belt beyond Neptune.

Our solar system is a smashing success. A new study suggests that from its earliest period—even before the last of its nebular gas had been consumed—Earth's solar system and its planets looked more ...

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