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The European Space Agency launched two Earth observation satellites on a single Vega-C rocket from Europe's Spaceport in French Guiana, and says its mission control center in Germany has received a…
Between the softest X-rays Chandra can detect and the extreme-ultraviolet light that gas between the stars absorbs lies a slice of the spectrum that has been difficult to survey. Chandra's…
A SpaceX Falcon 9 launched three more O3b mPOWER satellites from Cape Canaveral Space Force Station in Florida on Sept. 13, and the satellite operator SES says the flight completes the broadband…
In a computer, the collision that made the Moon has always been a collision between two liquids. It is not that anyone thought the young Earth and the body that struck it were molten all the way…
Two spacecraft built by Impulse Space closed to less than 200 meters of each other in low Earth orbit in July and photographed one another as they passed, the California company said in an account…
On Feb. 9, 2023, astronomers pointed an infrared spectrograph at a comet and measured the temperature of the water gas pouring off it. The warmest water was not at the comet. It was a little way out,…
NASA and IBM released an open-source artificial intelligence model for studying the Moon on Sept. 10, along with a free dataset that pulls observations from nine instruments across four lunar…
Rocket Lab launched an Electron rocket from its complex in New Zealand on Sept. 11 and placed a single Earth observation satellite into a circular orbit 500 kilometers above the planet. The company…
A white dwarf is a star that has run out of fuel and collapsed to about the size of Earth, and its gravity is brutal. Anything heavier than helium sinks out of the atmosphere and vanishes from view.…
Solar particles thrown out by an eruption on the Sun reached the bare surface of Mercury while the BepiColombo spacecraft flew close overhead, researchers led by the University of Helsinki report in…
Mercury's surface carries the record of how much the planet has shrunk as its interior cooled, and part of that record has been buried. G. Nishiyama of the German Aerospace Center's Institute of…
Researchers have put a ceiling on the most energetic flare the Sun could produce, and it reaches into the range of the biggest outbursts seen on other stars like it. Natalie Krivova and Emre Isik of…