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Earth's moon could have formed in just 5 hours after giant impact
One day in history about 4.5 billion years ago was a dramatic one for Earth, potentially giving our planet an instant moon and an almighty headache all in one go.
On this day in space! Sept. 7, 1995: NASA launches its 100th astronaut flight on space shuttle Endeavour's STS-69 mission
On Sept. 7, 1995, the space shuttle Endeavour launched on mission STS-69, NASA's 100th astronaut flight. Here's why it mattered.
Galaxies tangled in science and spirit | Space photo of the day for Sept. 7, 2026
"Astronomy is not just science or spirit; it's both at the same time."
The future of Earth observation: Private satellites and AI bring benefits but also pose risks
We've entered a new world of Earth observation, in which artificial intelligence helps researchers make sense of an ever-glowing glut of privately gathered data.
Cheaper than Prime Day, this super-portable, beginner-friendly telescope is my number one choice for skywatching
Deals 20% off at Amazon, the Celestron FirstScope is the telescope I grab for quick stargazing sessions and it's ideal for beginners and kids too.
Two astronauts complete camera and docking aid replacements on spacewalk outside space station
Like their compatriots here on Earth, the three NASA astronauts living aboard the International Space Station will get a well-deserved rest on Labor Day.
On this day in space! Sept. 6, 1947: The US Navy launches 1st V-2 rocket at sea in ballistic missile test
On Sept. 6, 1947, a V-2 rocket launched from an U.S. Navy aircraft carrier for the first time. Here's why it mattered.
SpaceX Falcon 9 rocket launches 27 Starlink satellites, lands on ship at sea (video)
SpaceX launched yet another batch of its Starlink internet satellites today (Sept. 6), sending them up from California's central coast.
