An Ariane 5 rocket on its launch pad Thursday in Kourou, French Guiana. Credit: ESA/CNES/Arianespace/JM Guillon
Arianespace is counting down to the blastoff of an Ariane 5 rocket Saturday night from French Guiana, the final flight of Europe’s workhorse launcher before NASA and the European Space Agency entrust it to launch the $10 billion James Webb Space Telescope.
The standard model of cosmology is a remarkably powerful and accurate description of the universe, tracing its evolution from the big bang to its current state, but it is not without mysteries. One of the biggest unsolved questions of the standard model is known as early cosmic inflation.
An Ariane 5 rocket will launch satellites for SES and the French military tonight, Oct. 23, and you can watch it live here.
There's a lot to look at between now and the December solstice: two eclipses, four meteor showers, Venus reaching its pinnacle in brilliance and a potential bright comet!
Physicists propose a new plan to "slice and dice" incoming asteroids that could save Earth from a deadly calamity.
A polynya, or rift, opened in the Arctic's oldest, thickest ice in May 2020, new research finds.
The U.S. needs to invest more in nuclear-powered spacecraft to be competitive with nations like China, experts say.
For the next two and a half weeks, early-morning skywatchers will have an excellent opportunity to spot the so-called "elusive planet" — Mercury.
Elon Musk, the billionaire founder of SpaceX, said Friday the company’s huge new Starship rocket could be ready for its first orbital test launch from South Texas as soon as November, but the schedule comes with two big uncertainties that may push the launch to next year.
Wind the cosmic clock back a few billion years and our Solar System looked much different than it does today. About 4.5 billion years ago, the young Sun shone much like it does now, though it was a little smaller. Instead of being surrounded by planets, it was ensconced in a swirling disk of gas and dust. That disk is called a protoplanetary disk and it’s where the planets eventually formed.
An uncrewed Orion capsule could ride the first Space Launch System megarocket as early as Feb. 12, 2022. But a lot has to go right.
The FAA held two public hearings this week about its environmental assessment of SpaceX's orbital launch activities in South Texas. People voiced strong opinions, both pro and con.
The hush-hush launches from NASA's Wallops Flight Facility tested advanced hypersonic weapons technology for the U.S. military.
China just launched what is planned to be its longest crewed mission to date, but the next spacecraft in the series is ready to blast off should the Shenzhou 13 astronauts need rescuing.
China's Tianwen 1 orbiter and Zhurong rover are once again active at Mars following a communications blackout caused by the sun interfering with radio signals sent from Earth.
The 74,000-pound Orion spacecraft was lifted inside the Vehicle Assembly Building this week, and mounted to the top of the Space Launch System. Credit: NASA/Frank Michaux
With NASA’s powerful new 322-foot-tall moon rocket fully stacked at Kennedy Space Center, managers said Friday that Feb. 12 is the soonest the unpiloted Artemis 1 mission could blast off toward lunar orbit, a date that hinges on the outcome of a critical fueling test on the launch pad in January.
Astronomers, dark-sky advocates, and satellite operators are discussing light pollution and satellite constellations with the United Nations' Office of Outer Space Affairs.
SpaceX's latest Starship prototype could blast off into orbit earlier than expected.
NASA wants more private-sector firms to ferry its astronauts up into space, including missions to and from the International Space Station.
The mission has recorded five hours of audio since landing in February.
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