Asteroid Itokawa gives up its secrets

Itokawa is the 1st asteroid from which samples were obtained and returned to Earth. From these samples, scientists have figured out Itokawa's true age and geologic history.

Watch online, as asteroid 2018 RC sweeps past

Asteroid 2018 RC will sweep past at about half the moon's distance during the night of September 8, according to clocks in the Americas. Learn how to see it online.

Hear the sounds of the sun

Listen to the vibration of the sun. "It has a warmth to it. It's just enough where I can almost feel the sound on my skin."

Saturn’s famous hexagon towers above cloudtops

As wide as 2 Earths - like nothing seen on any other world - Saturn's hexagon was thought to be a feature of the lower atmosphere, where Saturn's weather happens. Now there's evidence it extends high above the cloudtops.

Jupiter’s growing pains, explained

Jupiter is the biggest planet in our solar system, but had delayed growth early on. Scientists weren't sure why, but now might have an answer.

New Horizons has Ultima Thule in view

The legendary craft that flew past Pluto in 2015 is still heading outward. New Horizons will sweep past its next target, nicknamed Ultima Thule, on New Year's Day, 2019.

How Gaia could help find Dyson spheres

Dyson spheres are hypothetical megastructures built by extraterrestrials for the purpose of harvesting all of a star's energy. Here's how the European Space Agency's Gaia mission might help find one.

Could ETs use star mergers to communicate?

When 2 extremely dense neutron stars orbit each other closely, they spiral inward over time and eventually merge. Such mergers are powerful. Could advanced civilizations be using them to signal across the cosmos?

Astronomers map a starburst galaxy

Astronomers made the sharpest and clearest map yet of a distant starburst galaxy, where stars form 1,000 times faster than in our Milky Way. They're now calling this galaxy an "unstoppable monster."

We’ve got a landing site on asteroid Ryugu

The lander for Hayabusa2 mission at asteroid Ryugu is due to touch down on October 3. Now the site has been chosen! This Japanese mission will collect samples from the asteroid and bring them back to Earth.