Exoplanets like Earth have been discovered but not all Earth-like planets are equal when it comes to alien life.

Their analysis showed that the planet lies about 3,000 parsecs, or just under 10,000 light-years, from Earth. Its mass is around 22 percent that of Jupiter, equivalent to roughly 70 Earth masses, ...

About a decade ago the American space agency seriously started considering a series of telescopes dedicated to finding definitive proof of life on worlds located in other solar systems. It did so by ...

We live in a very exciting time: answers to some of the oldest questions humanity has conceived are within our grasp. One of ...

Mike Brown is convinced that beyond Neptune, at the far reaches of our solar system, there's an unseen giant planet. "This is the 5th largest planet in our solar system, lurking out there, waiting to ...

(via Be Smart) The James Webb Telescope just took a photo of a newly discovered exoplanet. Exciting stuff but the raw image just looks like a small, faint dot—not a fully detailed world. The question ...

Earth isn’t a perfect sphere. The rotation of our planet causes it to bulge ever so slightly at the equator, making it about 0.3 percent wider there than from pole to pole. But that’s nothing compared ...