Hanneke Weitering

Mark your calendars!

If it weren't for the weather, SpaceX would have made history Wednesday (May 27). Now the company will have to wait another three days to try again — if Mother Nature cooperates.

On the eve of his historic launch on a SpaceX Crew Dragon spacecraft, NASA astronaut Bob Behnken got ready for the big day by launching a rocket of his own.

The stakes have never been higher for SpaceX, which is poised to become the first commercial spaceflight company to launch NASA astronauts to space on Wednesday (May 27).

SpaceX is officially "go" to launch two NASA astronauts to the International Space Station this week after the final launch readiness review. But some bad weather could potentially cause delays.

Space.com spoke with NASA's former human spaceflight chief Doug Loverro, who abruptly resigned on the eve of a historic launch with little explanation.

NASA has renamed its Wide Field Infrared Survey Telescope (WFIRST) to honor the renowned astronomer Nancy Grace Roman, also known as the "mother of Hubble."

Annie Glenn, widow of the late NASA astronaut and U.S. Senator John Glenn — the first American to orbit the Earth — has passed away at the age of 100, NASA announced today.

Here's a step-by-step explainer of what will happen during SpaceX's first Crew Dragon mission with astronauts, from prelaunch preparations to splashdown.

You'll need to get up before sunrise to see it!

Rivers could have been raging on ancient Mars for hundreds of thousands of years, a new study finds.

The moon will make a close approach to Jupiter and Saturn in the predawn sky on Tuesday, May 12, 2020.

A newfound black hole may be the closest black hole to Earth, and you can spot its cosmic home in the night sky without a telescope.

Two NASA astronauts will make history this month when they fly to the International Space Station in a SpaceX Crew Dragon capsule. But how long their mission will last has yet to be determined.

If two black holes tango in space but astronomers cannot see them, can we still admire their flashy dance moves?

Venus, the most brilliant planet in the night sky, will be shining at its brightest tonight (April 28).

A big asteroid will safely fly by Earth early tomorrow morning (April 29), and you can watch it approach our planet in real time tonight with a free webcast from the Slooh online observatory.

The huge "potentially hazardous" asteroid 1998 OR2, which will safely fly by Earth on April 29, appears to have brought its own face mask for its close encounter with our pandemic-ridden planet.

After a close encounter with the moon on Sunday (April 26), Venus will be at its greatest brightness of the year on Tuesday (April 28).

Russia will launch a cargo resupply spacecraft to the International Space Station today (April 24), and you can watch the launch and docking live online.

The Intrepid Sea, Air and Space Museum in New York City will host its first-ever "Virtual Astronomy Live" webcast today (April 24) at 2 p.m. EDT (1800 GMT).

Europe's new exoplanet-spotting space telescope has observed its first alien worlds.

You may not be able to see the moon in the sky tonight, but if you look up for long enough at a dark, clear sky, you may catch some "shooting stars."

NASA's OSIRIS-REx spacecraft, which is getting ready to scoop a sample of asteroid Bennu, has successfully completed a partial dress rehearsal for its historic trip to the asteroid's surface.

Comedian Stephen Colbert phoned the International Space Station today (April 15) to get some isolation tips from NASA astronaut Jessica Meir.