Satellites and spacecraft in the vast region between Earth and the moon and just beyond—called cislunar space—are crucial for ...

In 1978, NASA scientist Donald Kessler warned that runaway collisions in orbit could trigger a self-sustaining debris cascade, making space travel nearly impossible. Decades later, crowded orbits, ...

For nearly a century, astronomers have watched galaxies spin and the universe expand in ways that visible matter alone cannot ...

Scripps Ranch-Recently, I interviewed both the actor and director of Scripps Ranch Theatre’s Donna Orbits the Moon. Ian August’s one-woman show stars the incredibly talented Susan Clausen. Yesterday I ...

General relativity doesn’t just bend light, it can influence planetary orbits enough to wipe out entire systems.

Astronomers have found a new planet that could possibly support life. The planet is about 146 light-years away, roughly the size of Earth, and has conditions similar to Mars. The newly discovered ...

Astronomers have found thousands of exoplanets around single stars, but few around binary stars—even though both types of stars are equally common. Physicists can now explain the dearth.

Dubbed HD 137010 b, the planet might fall just within the outer edges of its star's 'habitable zone', meaning there could be liquid water on its surface and a suitable atmosphere for life.