The Solar System might not be as quiet and orderly as we think. Imagine one day looking up and seeing something strange in the sky, a small speck that grows larger and larger. Soon, it becomes clear: ...

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 ...

Everyone's talking about it on social media: A great planetary alignment that's coming sometime this month — there are a few different dates being thrown around. Rumor has it that as many as six ...

Discover what could happen if Planet X entered our solar system unexpectedly. Veterans flood Democrat’s office with ...

When astronomers search for planets that could host liquid water on their surface, they start by looking at a star's habitable zone. Water is a key ingredient for life, and on a planet too close to ...

For the last month and change, you might've seen the headlines about the planetary alignment, or a planetary parade, going on in our solar system. And that's true. In January 2025, Venus, Mars, ...

Astrology. Maybe it’s nothing more than a pseudoscience to you. Maybe—on the other hand—you use it as a tool to plan your life. Others are more in the middle, a little “astrology-curious,” perhaps.

Just 30 years ago, astronomers could not say with total certainty that other stars were accompanied by planets. But thanks to the exoplanet revolution, we now know of 535 times more planets outside ...

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 ...