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WebNASA’s new space telescope will reveal the universe like never before
1+ hour, 1+ min ago (761+ words) The observatory’s first years of work will usher in a new era of astrophysics The Nancy Grace Roman Space Telescope’s primary observation segment is shown here at NASA’s Goddard Space Flight Center in Maryland during the spacecraft’s assembly. NASA is…...
A record-breaking star could reveal how the Milky Way’s giant black hole spins
1+ week, 1+ day ago (254+ words) The star could offer a new test of black hole physics and Einstein’s gravity Meet star S301 (orange dot next to illustrated black hole). It’s the fastest-moving star in the galaxy, travels closest to the Milky Way’s supermassive black hole and…...
Stars’ plasma spurts may be blocked by magnetic fields
2+ week, 23+ hour ago (219+ words) The sun frequently flings plasma into space, but sightings of such eruptions on other stars are rare. Magnetic fields could explain why....
A vest tested on the Artemis I mission blocked some radiation exposure
2+ week, 1+ day ago (540+ words) The 26-kilogram garment protected a model human torso on the uncrewed flight around the moon During the Artemis I mission in 2022, researchers tested the AstroRad vest as radiation protection on model human torsos inside the Orion spacecraft. The colors in…...
The largest known galaxy is wider than 17 Milky Ways
2+ week, 3+ day ago (360+ words) It grew to 1.7 million light-years wide by gobbling up other galaxies The elliptical nature of IC 1101, the largest known galaxy, is shown in this image taken by the Hubble Space Telescope in June 1995. The blue ribbon for largest known galaxy…...
Heat-trapping asteroid dust may have incinerated the dinosaurs within hours
3+ week, 1+ day ago (302+ words) The global radiation pulse may have ignited vegetation and killed exposed animals Sixty-six million years ago, an asteroid the size of Mount Everest slammed into Earth. The impact hurled vaporized rock into the atmosphere, which may have spelled the end…...
These tiny swirls on the sun could trigger solar flares
3+ week, 1+ day ago (254+ words) A huge telescope observed the swirls for the first time on the sun’s surface This is the highest-resolution image of the sun’s surface ever captured. The structures seen here are swirling whirlpools of magnetized plasma that may energize solar flares....
New images reveal Betelgeuse’s buddy star
1+ mon, 2+ hour ago (472+ words) The sighting appears to confirm a century of hints and claims The red supergiant star Betelgeuse (middle), which perches on a shoulder of the constellation Orion (right), is expected to swallow its companion star (small bright dot, left) in about…...
What kinds of black holes exist — and how are they different?
1+ mon, 4+ day ago (93+ words) Lisa Grossman is the astronomy writer. She has a degree in astronomy from Cornell University and a graduate certificate in science writing from University of California, Santa Cruz. She lives in Minneapolis. By Mandana Tadayon and Lisa Grossman Black holes…...
Different moon rocks tell different tales about a long-ago bombardment
1+ mon, 4+ day ago (533+ words) Sample ages bolster a rising tide doubting a singular 3.9 billion-year-old lunar cataclysm CNSA, Handout via Xinhua Bits of rock from the farside of the moon are adding weight to a scientific rethink about the solar system’s adolescence. The moon’s craters…...