ALMA achieves unprecedented cosmic microwave background temperature measurement at redshift 0.89
Saturday, 01 November 2025 02:28
A Keio University-led research team, working with the National Astronomical Observatory of Japan, has precisely measured the cosmic microwave background radiation (CMB) temperature at redshift z=0.89, corresponding to about 7 billion years ago, by analyzing archival Atacama Large Millimeter/submillimeter Array (ALMA) data targeting the quasar PKS1830-211.
The CMB is faint primordial radiat Semiconductor startup to fly payloads on Falcon 9 boosters
Friday, 31 October 2025 22:15
A startup plans to test technology to produce semiconductors in space on a series of Falcon 9 launches using payloads attached to the rocket’s booster.
Shenzhou-21 completes rapid docking with Tiangong space station 3.5 hours after launch
Friday, 31 October 2025 19:59
China’s latest crewed mission arrived at the Tiangong space station Friday, just 3.5 hours after launch from Jiuquan spaceport in the Gobi Desert.
China's latest astronaut trio dock at Tiangong Space Station
Friday, 31 October 2025 19:14
A crew of three Chinese astronauts, including the country's youngest-ever, docked early Saturday at the Tiangong space station, accompanied by four lab mice. The Shenzhou-21 spaceship docked at 3:22 am (1922 GMT Friday), China's state news agency Xinhua reported. Kyivstar prepares to expand Starlink Direct to Cell testing across Ukraine
Friday, 31 October 2025 19:10
Ukrainian telco Kyivstar said Oct. 31 it is preparing to test SpaceX’s Starlink Direct to Cell service across most of the country, excluding border areas, active combat zones and territories occupied by Russian forces.
For clues to the future of military space, look in the air
Friday, 31 October 2025 18:00
MOUNTAIN VIEW, Calif. – Logistics, from satellite life extension to in-space assembly, will become common elements of future military operations, according to speakers at the MilSat Symposium here.
NASA rejects Kardashian's claim Moon landing 'didn't happen'
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China sends astronauts—and mice—on its latest space station mission
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Muscle tissue from a 3D printer—produced in zero gravity
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Parabolic flight experiment highlights flame dynamics in microgravity
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Week in images: 27-31 October 2025
Friday, 31 October 2025 13:15
Week in images: 27-31 October 2025
Discover our week through the lens
Turning up the heat in ESA’s Astronaut Reserve Training
Friday, 31 October 2025 12:30
Image:
Turning up the heat in ESA’s Astronaut Reserve Training Resources, reactors and rivalries will decide the new moon race
Friday, 31 October 2025 12:00
Seas of the Sun: The story of Cluster
Friday, 31 October 2025 10:30
Video:
00:46:03
What began with tragedy ended in triumph. This is the untold story of the European Space Agency’s pioneering 25-year Cluster mission to study how invisible solar storms impact Earth's environment.
Like a ship in a never-ending storm, Earth is bombarded by swarms of particles ejected from the Sun at supersonic speeds. Most of these solar wind particles are deflected by the magnetosphere and sail harmlessly by, but Earth’s shield is not bulletproof.
Since 2000, Cluster sailed the seas of the Sun and revealed the complexities of the Sun–Earth connection. After two-and-a-half incredibly successful decades in space, ESA took the decision