A planet has been predicted to orbit the sun with a period of 10,000 years, a mass 5x that of Earth on a highly elliptical ...

WD 1856+534b—a freezing world with a surface temperature of -125 degrees Fahrenheit—exists where planets are normally scoured ...

Mars may experience global auroras on Monday after a solar flare's charged particles reach its atmosphere — and NASA's ...

A planet circling at a sharp 90-degree angle to the orbits of its two host stars has now been confirmed. This discovery ...

What if billions of years ago, the Red Planet had rain, snow, and even rivers that carved out landscapes much like those we ...

To understand how chaotic the early solar system was, we need only gaze at the moon. Its cratered surface bears the scars of ...

A new study, however, identifies a possible candidate. A separate team of astronomers compared 1983 data from the Infrared Astronomical Satellite (IRAS) with 2006 data from Japan’s AKARI mission in ...

Carbon dioxide may be a naturally occurring substance on Earth, but too much of its presence has contributed to global ...

Planet Fitness is bringing back its High School Summer Pass program to give teenagers free access to its gyms this summer.

The International Astronomical Union, which reclassified Pluto as a dwarf planet in 2006, is the arbiter of such ...

We tend to think of habitability in terms of individual planets and their potential to host life. But barring outliers like ...