After arriving at the California launch site at the end of September, the two HydroGNSS satellites have been carefully prepared for liftoff, scheduled this month.
Image: Swoosh!
SpaceX launched 29 Starlink satellites to orbit from Florida's Space Coast today (Nov. 5), adding to its huge and ever-growing satellite-internet megaconstellation.
"If these results are confirmed, it would mark a major paradigm shift in cosmology since the discovery of dark energy 27 years ago."
Astronomy would be a lot easier if there were no clouds of gas and dust in space. There'd be no need for telescopes with the abilty to see through these thick veils. Alas, space is not only full of things we want to see, but full of things that get in the way.
The United Launch Alliance (ULA) Atlas 5 rocket sits on Space Launch Complex 41 (SLC-41) at Cape Canaveral at sunset. The Atlas V will launch the ViaSat-3 F2 ultra-high-capacity broadband satellite. Image: United Launch Alliance
Update Nov. 5, 11:30 p.m. EST (0430 UTC): ULA scrubbed the mission due to a valve issue.
Five lucky winners will be announced Nov. 12 at 4 p.m. EDT (2000 GMT) on Space.com's Facebook, Twitter, and BlueSky pages.
The near-full moon shines close to the Pleiades open star cluster early on Nov. 6
"By reproducing relativistic plasma conditions in the lab, we can measure processes that shape the evolution of cosmic jets and better understand the origin of magnetic fields in intergalactic space."
The Moon, Earth's only natural satellite, is a fascinating celestial body. Here are some interesting facts about its characteristics and history.
A United Launch Alliance Atlas V rocket will launch the 13,000-pound (5,900 kilograms) ViaSat-3 F2 satellite to orbit today (Nov. 5), and you can watch the action live.
The astronauts of China's three-person Shenzhou 20 mission will wait a little longer before returning to Earth, after a suspected debris impact on their spacecraft.
Astrophotographer Mark Johnstron captured a mesmerizing cloud of hydrogen plasma dancing above the sun's limb in this breathtaking video.
Under the untouched darkness of Chile's Atacama Desert, the European Southern Observatory's Very Large Telescope stands beneath an arching Milky Way.
Rocket Lab will launch its sixth mission for the Japanese Earth-imaging company iQPS this afternoon (Nov. 5), and you can watch the action live.
Observing obstacles plague all amateur astronomers, but when the chance arises, we can still embrace unanticipated wonder.
November's full supermoon occurs as the moon draws close to Earth in its 27-day orbit.
The back-to-back eruptions caused radio blackouts across two hemispheres as the active sunspots turn to face Earth.
Don't miss 2025's closest full moon with this free livestream from Italy with the Virtual Telescope Project. The livestream will begin at 2 p.m. EST (1900 GMT)
An ultra-high-resolution instrument on board NASA's $10 billion James Webb Space Telescope has been suffering from blurry vision. AI helped fix the problem.
Image:
This shimmering view of interstellar gas and dust was captured by the European Space Agency’s Euclid space telescope. The nebula is part of a so-called dark cloud, named LDN 1641. It sits at about 1300 light-years from Earth, within a sprawling complex of dusty gas clouds where stars are being formed, in the constellation of Orion.
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