There is a reason the most recognizable planet orbiting two stars is the fictional desert world of Tatooine from Star Wars.

The Milky Way galaxy grew into its current form with the help of smaller galaxies over time, which it has "consumed" or ...

The planets of our solar system all orbit the Sun within a few degrees of a flat plane extending out from our star’s equator — its equatorial plane. That makes sense. Our solar system began as a ...

Satellite collisions in orbit could trigger a catastrophic global chain reaction, potentially halting space exploration, ...

Satellites and spacecraft in the vast region between Earth and the moon and just beyond—called cislunar space—are crucial for space exploration, scientific advancement and national security. But ...

Online travel agency Orbitz will soon find itself under the microscope again. As part of the transportation spending bill signed by President Bush on Tuesday, Congress has called on the Department of ...