These small galaxies are either crammed with stars or they host gigantic black holes. The data astronomers have collected continues to puzzle them.

Assistant Professor Richard Teague describes how movement of unstable gas in a protoplanetary disk lends credibility to a secondary theory of planetary formation.

Most planets that have the potential to host life have one side always facing their sun.

While space is mostly empty, it does have some matter and particles spread throughout it.

For years, researchers have wondered what energy source allows the solar wind − a projection of charged particles from the Sun − to rush by at hundreds of miles a second.

Nasa’s decision to prioritise the safety of the astronauts, and to work with another commercial partner in finding a solution, is a triumph of wisdom and caution.

Researchers have identified new details about the size and appearance of the North Star, also known as Polaris

The SpaceX-backed mission has no professional astronauts aboard.

The Polaris Dawn mission will test communications, perform research and conduct a spacewalk with SpaceX extravehicular spacesuits.