The Universe

NASA’s formidable gamma-ray burst hunter is doomed to soon reenter Earth’s atmosphere, leaving a glaring gap in our view of the high-energy sky

The newfound star S301 orbits the Milky Way’s supermassive black hole so closely that its view of the heavens gets twisted

NASA’s newest major observatory will include the most advanced planet-imaging tech ever flown in space. Here’s how it works

Claiming an exoplanet to be “Earth-like” is a trend that needs to bite the dust

Betelgeuse, the sky’s most famous red supergiant, is well studied but poorly understood

Folding a piece of paper makes it thicker. How many folds would it take to reach the moon—and beyond?

Lakes of liquid methane on Titan, Saturn’s largest moon, could offer exhilarating—and terrifying—opportunities for otherworldly surfing

Using the new Vera C. Rubin Observatory, astronomers are beginning the largest and deepest survey of the sky. What will they see?

Duration, location, aviation: What makes the best possible view of a total solar eclipse?

Other planets have moons, too. Do they get eclipses like we do?

The moon is Earth’s constant companion. But will that always be the case?

Sometimes we mistake one kind of object with another to disastrous effect