The Hubble Telescope Confirms The Largest Comet Nucleus Ever Seen By Astronomers
NASA's Hubble Space Telescope has confirmed the largest icy comet nucleus ever seen by scientists. The C/2014 UN271 (Bernardinelli-Bernstein) nucleus is about 80 miles in diameter, which is larger than the state of Rhode Island, NASA says.
The comet's nucleus is about 50 times larger than most comets and its mass is estimated to be a staggering 500 trillion tons.
"This comet is literally the tip of the iceberg for many thousands of comets that are too faint to see in the more distant parts of the solar system," David Jewitt, a professor of planetary science and astronomy at the University of California, Los Angeles, said in a statement.
"We've always suspected this comet had to be big because it is so bright at such a large distance. Now we confirm it is," Jewitt added.
Comet C/2014 UN271 was first discovered by astronomers Pedro Bernardinelli and Gary Bernstein using archival images from the Cerro Tololo Inter-American Observatory in Chile. The comet has been observed since 2010, when it was 3 billion miles away from the sun, and has been studied since then.
NASA says there was a challenge in measuring the comet's nucleus, because it was too far away for the Hubble telescope to determine its size. Instead, scientists had to make a computer model that was adjusted to fit the images of the bright light of the comet they got from the telescope's data.
Despite traveling at 22,000 mph, the massive comet is still coming from the edge of the solar system. But NASA assures that it will never get closer than 1 billion miles away from the sun — and even then, it won't be until 2031.
The previous record holder for largest comet nucleus was discovered in 2002. Comet C/2002 VQ94 was approximately 60 miles across.
Michael John Mammone, 58, was riding his bicycle Wednesday along Pacific Coast Highway in Dana Point when he was assaulted.
Please don't hurt yourself.
Anthony Lowe was shot and killed by Huntington Park police on Jan. 26. 'Thank goodness that we’re in the era of videos,' said the family attorney as they file a federal civil rights lawsuit
The mountain lion's death comes about a month after the beloved P-22 was euthanized.
With two hikers still missing — one the well-known actor Julian Sands — expert mountaineers say the usual scarcity of snow in the L.A.-area makes it especially hard to get enough experience to safely venture out in harsh conditions.
But Yeoh is the first to publicly identify as Asian. We take a look at Oberon's complicated path in Hollywood.