3+ day, 1+ hour ago   (781+ words) Scientists have discovered that the Moon-forming collision may have depended heavily on how hot and physically strong early Earth and Theia were. New simulations found that some impacts create the familiar disk of debris that later becomes the Moon, while…...

3+ week, 5+ day ago   (689+ words) Gravity was the natural place to start. On average, the universe is electrically neutral, which means electromagnetism does not dominate its large-scale behavior. Einstein also knew nothing about the strong and weak nuclear forces (to be fair, nobody did), but those…...

1+ week, 3+ day ago   (907+ words) The universe is producing fewer stellar "babies." Over the past 4.5 billion years, the rate at which new stars form has fallen to less than half its previous level. Yet the supply of one of the most important types of "fuel…...

2+ week, 4+ day ago   (604+ words) A single asteroid impact may explain two of Deimos’s most puzzling features: its huge southern depression and unusually smooth, dusty surface. Simulations suggest a roughly 320-meter asteroid struck the Martian moon at an angle, throwing debris around the entire world…...

4+ week, 23+ hour ago   (674+ words) A massive star has been torn apart and gradually consumed by a black hole in a spectacular event that scientists compared to "preparing a snack for lunch." Astronomers around the world observed the extreme encounter, and the event was presented…...

2+ week, 6+ day ago   (295+ words) President Donald J. Trump will present the Congressional Space Medal of Honor to each member of NASA's Artemis II crew during a ceremony at Johnson Space Center in Houston. The event is scheduled for 11 a.m. EDT on Friday, Aug. 28. The medal is…...

3+ week, 6+ day ago   (634+ words) Astronomers may finally have a clue to what happens to the mysterious “little red dots” that crowded the early universe. By studying a spiral galaxy nicknamed the “Saguaro,” researchers found a compact, bright red center that closely resembles these distant…...

2+ week, 1+ day ago   (439+ words) A major new analysis challenges recent claims that the universe's expansion is slowing, finding that the evidence for cosmic acceleration remains strong. The findings preserve the leading role of dark energy, while leaving scientists with the enduring mystery…...

1+ week, 2+ day ago   (586+ words) The LUX-ZEPLIN experiment has detected a rare particle interaction that looks unusually difficult to explain as ordinary background noise and appeared where dark matter might be expected. Scientists are not claiming a discovery yet, but additional data could show whether…...