A University of Arizona professor is optimistic about finding life on a newly discovered planet located in the Alpha Centauri system, which is the closest solar system to ours. The planet is believed ...

Astronomers have found strong evidence of a giant gas planet orbiting a star in a solar system close to our own sun. Four light-years away from Earth, the Alpha Centauri triple-star system has long ...

With thousands of exoplanets already on the books and thousands more waiting for confirmation, it's no surprise when astronomers announce the discovery of a new world. These planets are usually ...

Planets lacking plate tectonics and sufficient carbon dioxide and oxygen could make advanced civilizations like ours ...

An interstellar tourist is taking a quick trip through our solar system, becoming one of just three known objects to ever do so, according to NASA. A comet from a solar system outside our own was ...

"It is possible that a planet once existed in the solar system but was later ejected, causing the unusual orbits we see today." Astronomers have discovered a massive new solar system body located ...

The interstellar object hurtling toward the inner solar system, where Earth is located, is much larger than previously ...

Comets SWAN and Lemmon will both swing by Earth and appear bright in the sky near the end of October. Here’s how to see them.