Something incredibly strange is unfolding in our cosmic neighborhood, a powerful and unexplained gravitational force is ...

Out of thousands of planets strewn across the universe, Earth got pretty lucky. It has a close, but not too close, sun. It has a protective atmosphere. It has water and oxygen and a variety of ...

Using NASA's Transiting Exoplanet Survey Satellite (TESS), astronomers have discovered that aging stars in their so-called "red giant" phase are even more destructive to their orbiting planets than ...

Imagine the effects if each planet in the solar system replaced our Moon. Enough Senate Democrats vote with Republicans to ...

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 ...

Skywatchers who spotted the Jupiter-Venus conjunction on Aug. 12 are in for a dazzling display in the night sky through the end of August, with a "planet parade" building in the eastern sky, with ...

This article was originally featured on The Conversation. Are planets in the solar system that are closer to the Sun older than the ones further away? – Gavriel, age 10, Paducah, Kentucky A cloud of ...

In just some of many celestial highlights of August 2025, stargazers peeped a "planet parade" and caught a rare Venus and Jupiter conjunction, with plenty more dazzling displays in the night sky to ...