Rest easy: Earth probably won’t be creamed by a killer asteroid in the next 1,000 years. New research accepted for publication in The Astronomical Journal and available on the preprint server arXiv.org finds that none of the kilometer-wide (0.6 mile) asteroids that travel near Earth are likely to hit the planet in the next millennium. … Read more
After more than a year together on the Red Planet, NASA’s Perseverance rover and its hitchhiking “pet rock” have finally parted ways. The stone had been lodged in one of the rover’s wheels for more than half of its mission on Mars. Perseverance accidentally picked up the pet rock in its front left wheel on … Read more
An ethereal whirlpool of light recently appeared in the night sky above Alaska, briefly stealing the limelight from a strong auroral display. But the bizarre, spiral-shaped object had nothing to do with the dancing polar lights. Instead, the luminous vortex was just the latest example of what astronomers have nicknamed “SpaceX spirals,” which are becoming … Read more
Gravity can turn itself into light, but only if space-time behaves in just the right way, a research team has found. Under normal circumstances, you cannot get something from nothing. Specifically, the Standard Model of particle physics, the reigning theory that explains the subatomic zoo of particles, usually forbids the transformation of massless particles into … Read more
After 65 years of lunar exploration, the United States is finally going to put its first autonomous rover on the moon. But this mission won’t be helmed by NASA engineers — instead, it is the brainchild of a dedicated group of college students. The Iris rover was developed by students, faculty and alumni at Carnegie Mellon … Read more
Neptune is famously a vivid blue, but the asteroids orbiting near it are decidedly not. An international team of astronomers recently took a peek at Neptune’s Trojan asteroids and found that they all seem to be some shade of red — far redder than most asteroids in the solar system. They published their results Feb. … Read more
Astronomers have discovered one of the largest black holes ever found — an ultramassive monster roughly 30 billion times the mass of the sun — using a space-time trick predicted by Albert Einstein. The colossal black hole, which lurks 2.7 billion light-years from Earth in the brightest galaxy of the galaxy cluster Abell 1201, was … Read more
Chinese researchers may have discovered billions of tons of water inside strange glass spheres buried on the moon, and they could be used as a future water source for moon bases, a new study suggests. The tiny glass spherules, collected in lunar soil samples and brought to Earth by China’s Chang’e-5 mission in December 2020, … Read more
An enormous “solar tornado” the size of 14 Earths stacked on top of each other recently raged on the sun’s surface for three whole days. The enormous plasma twister may be one of the largest ever recorded. The solar tornado emerged near the sun’s north pole on March 15 and continued to grow and shape-shift … Read more
The universe could, in fact, be a giant doughnut, despite all of the evidence suggesting it’s as flat as a pancake, new research suggests. Strange patterns found in echoes of the Big Bang could be explained by a universe with a more complicated shape, and astronomers have not fully tested the universe’s flatness, the study … Read more
