Astronomy

These cosmic clouds have blossomed 1,300 light-years away

Our Moon doesn't really have craters this big.

What powers the Crab Nebula?

Sometimes the dark dust of interstellar space has an angular elegance.

This rock structure is not only surreal -- it's real.

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From our vantage point in the

NASA astronauts held their own mini-Olympics on the International Space Station to mark the start of the Summer Games here on Earth.

SpaceX is now eyeing mid- to late August for the launch of the Polaris Dawn astronaut mission, which will feature the first-ever private spacewalk.

Mysterious “leopard spots” on a Martian rock could be evidence of extraterrestrial life—or of mere lifeless chemistry. Finding out the truth may require bringing the rock back to Earth

SpaceX is gearing up for the fifth launch of its massive Starship rocket, following four increasingly successful tests. What is the company hoping for, and what can we expect?

Astronomers have found that Ariel, a moon of Uranus, has some of the most carbon dioxide-rich deposits in the solar system, hinting at a buried water ocean.

Flaws in the CDC's H5N1 test highlight the risks of relying on a single test supplier, some experts say

Hundreds of thousands of people die from extreme temperatures every year, more than any other type of weather disaster

A solar flare on July 23 was even bigger than a previous one that triggered May's global aurora storm, but this one was facing away from Earth on the far side of the sun.

The Space Gal is headed into orbit, as part of Space for Humanity's Citizen Astronaut Program.

This NASA/ESA Hubble Space Telescope image is a wonderfully detailed snapshot of the spiral galaxy NGC 3430 that lies 100 million light-years from Earth in the constellation Leo Minor.

The four astronauts flying aboard SpaceX Crew Dragon are supposed to launch no earlier than Aug. 18 and splash down near Florida. Future crews will go to the west coast due to space junk concerns.

Find out what's going on at the International Space Station.

Auroras, stars and a fleeting meteor are captured in a mesmerizing new view from the International Space Station.