The Dunes of Pluto

The discovery adds to the planet’s history of strange atmospheric phenomena that scientists don’t fully understand.

September is full of opportunities to expand your knowledge of the night sky. Mark your calendars.

Dark energy might be getting weaker. Scientists are wondering if interactions with dark matter in a “dark dimension” may be responsible.

S301 passes close to Sagittarius A*—so close that its orbit could reveal how the black hole’s rotation warps the spacetime around it.

The intricate, 5.6 trillion-pixel map covers approximately 75 percent of the sky and includes about 4 billion celestial objects.

The mission to Phobos, Japan’s first Mars probe launch in 28 years, may reveal new information about our closest planetary neighbor.

Before reentering our atmosphere, the telescopes onboard NASA’s Neil Gehrels Swift Observatory have been restarted to take their last observations.

Astronomers will test equipment that, if it’s successful, will one day be crucial for discovering Earthlike planets.

Common sense is of no help in studying reality at the atomic scale.

“There’s no reason we can’t think that, at some point in the future, we can have volcano forecasts that are like weather forecasts.”

The eclipse will obscure about 93 percent of the moon’s surface. Here are the peak times and tips for the best viewing experience.

While the strengthening El Niño helped boost temperatures, climate change is the main culprit for making August so hot.