The vacuum of space isn’t really a vacuum. A vacuum is defined by Merriam-Webster as “a space absolutely devoid of matter.” However, even empty space has some matter in it. This matter, in the form of dust and gas, tends to collect into what are called molecular clouds. Without anything interfering with them they continue to float as a cloud.
Space News & Blog Articles
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Watch China's Shenzhou 13 astronauts return to Earth from space station tonight
China's first astronaut crew to spend a record-setting six months aboard the country's new space station returns to Earth tonight and you can watch it live online.
4 planets align over Manhattan in dazzling Good Friday parade (photo)
Amateur astronomer Alexander Krivenyshev snapped a gorgeous shot this morning (April 15) of Jupiter, Venus, Mars and Saturn shining over Manhattan's Upper West Side.
Alien planet with 3 stars is actually a star itself, scientists determine
Finding alien worlds in distant solar systems is a delicate task.
Artemis 1 moon rocket gets space station flyover in stunning NASA photo
A serene new NASA photo shows the agency's Artemis 1 moon rocket as the International Space Station flies overhead during a critical test.
Save big with these 3 Celestron telescope deals at Adorama
Three savings of over $100 on top-quality telescopes are available on Adorama.
Butterfly Nebula glows red in spectacular image from NASA's Spitzer Space Telescope
NASA's Spitzer Space Telescope captured an image of the aptly named Butterfly Nebula, also known as Westerhout 40 (W40).
Ax-1's first all-private crew to space station would love a trip to the moon. 'The sights here are amazing.'
The private Ax-1 astronauts on the International Space Station told students they'd love to go to the moon after their historic trip
Curious kids: What is a dwarf planet?
In 2006, and after much debate, the International Astronomical Union came up with a new definition for a planet. And for the first time, the term "dwarf planet" was used.
Private Ax-1 astronaut Eytan Stibbe to celebrate Passover in space
Eytan Stibbe, a private astronaut and the second Israeli to ever reach space, prepares to celebrate Passover in orbit.
Scientists spot elusive mini red giant stars, victims of stellar stealing
A tug-of-war between neighboring stars led to the formation of two strange types of red giant star, as seen in the eyes of a lost telescope.
Ax-1, Israel and the 'New Space' revolution: Q&A with Israel space chief Uri Oron
Space.com caught up recently with Uri Oron, head of the Israel Space Agency, to discuss the private Ax-1 astronaut mission, New Space and Israel's big ambitions in the final frontier.
Ariane 6 cryo-arms mimic liftoff
Video: 00:01:24
Europe’s Spaceport in French Guiana is preparing for the arrival of Ariane 6, ESA’s new heavy-lift rocket. The latest round of testing aims to validate the system of fuel lines and mechanical supporting arms that will keep Ariane 6 topped up with liquid hydrogen and liquid oxygen in the critical moments before liftoff. This work is part of the final preparations of the new Ariane 6 launch complex and all the systems necessary for a launch.
This Week's Sky at a Glance, April 15 – 23
Orion descends, Leo walks sideways, the Dog Stars stand up straight, the Moon wanes past full, and at dawn, Jupiter, Venus, Mars, and Saturn form a diagonal straight line.
Earth from Space: Scandinavian Peninsula
The Copernicus Sentinel-3 mission captured this impressive shot of the almost cloud-free Scandinavian Peninsula on 20 March.
Live coverage: SpaceX counting down to sunrise launch from California
Live coverage of the countdown and launch of a Falcon 9 rocket from Vandenberg Space Force Base in California with the NROL-85 mission for the National Reconnaissance Office. Text updates will appear automatically below; there is no need to reload the page. Follow us on Twitter.
SpaceX Webcast
Commercial crew has no problem adapting to life on space station
STORY WRITTEN FOR CBS NEWS & USED WITH PERMISSION
Hydrogen leak halts tanking test for Artemis moon rocket
NASA’s Space Launch System on Launch Complex 39B, with gaseous oxygen vapors venting from the top of the core stage during a cryogenic tanking test Thursday. Credit: NASA/Ben Smegelsky
A hydrogen leak near the connection between NASA’s Space Launch System moon rocket and its mobile launch platform foiled another attempt Thursday to pump cryogenic propellants into the towering mega-booster at the Kennedy Space Center.
U.S. intelligence-gathering payloads awaiting launch on SpaceX rocket
A SpaceX Falcon 9 rocket sits horizontal Thursday at Vandenberg Space Force Base in California. Credit: Brian Sandoval / Spaceflight Now
SpaceX plans to launch a Falcon 9 rocket from California’s Central Coast just after sunrise Friday, boosting a classified cargo into orbit for the National Reconnaissance Office on what is widely believed to be a naval reconnaissance mission.
NASA calls off 3rd attempt to fuel up Artemis 1 moon rocket
Today (April 14), NASA called off the latest attempt to fuel up Artemis 1's huge Space Launch System rocket, a crucial part of the mission's pre-launch "wet dress rehearsal."
