by Brooks Hays
Washington (UPI) Jun 29, 2018
A fireball lit up the sky above the city of Lipetsk in western Russia last week. This week, videos of the exploding meteor emerged and small meteorite fragments were found on the ground.
NASA and its scientists are part of an international effort to identify and track potentially dangerous near Earth objects, including asteroids and comets. The meteor that exploded over Russia last week arrived unexpectedly.
"We didn't see this one coming because it was just too small," Jay Melosh, a professor of earth, atmospheric, and planetary sciences at Purdue University, said in a news release. "The meteoroid that exploded over Chelyabinsk, Russia in 2013 and caused a lot of damage on the ground was around 60 feet wide. The one that exploded last week was only about 15 feet."
Millions of small meteors enter Earth's atmosphere every day. Almost all of them burn up immediately. But every once in a while, a space rock fragment enters at just the right angle, surviving long enough to produce a fireball bright enough to be seen in broad daylight.
Some reports suggest last week's fireball was bright enough to be seen a few hundred miles away in Moscow.
Data collected by NASA and analyzed by the International Meteor Organization revealed an explosive force of 3.2 kilotons of TNT, suggesting the exploding asteroid measured approximately 13 feet across. The meteor that exploded above Chelyabinsk, Russia, in 2013 measured 65 feet across.
NASA data suggests the latest meteor entered Earth's atmosphere at a speed of 8.9 miles per second, or 32,000 miles per hour.
The meteor's entry into Earth's atmosphere was also picked up by the International Monitoring System, a global network of sensors designed to detect nuclear weapons tests.
Lyrid meteor shower to peak over the weekend
Washington (UPI) Apr 20, 2018
The second major meteor shower of 2018 is set to peak this weekend. The Lyrids will deliver roughly 20 streaking meteors per hour during its peak. Saturday night will offer sky-watchers the best chance to take in the shooting stars, but Friday and Sunday nights will host a handful of meteors, too. "The shower will be best viewed after midnight when the radiant is highest in the sky," according to Dave Samuhel, an astronomy blogger for AccuWeather. The shower is named for the Lyra ... read more
|The content herein, unless otherwise known to be public domain, are Copyright 1995-2022 - Space Media Network. All websites are published in Australia and are solely subject to Australian law and governed by Fair Use principals for news reporting and research purposes. AFP, UPI and IANS news wire stories are copyright Agence France-Presse, United Press International and Indo-Asia News Service. ESA news reports are copyright European Space Agency. All NASA sourced material is public domain. Additional copyrights may apply in whole or part to other bona fide parties. All articles labeled "by Staff Writers" include reports supplied to Space Media Network by industry news wires, PR agencies, corporate press officers and the like. Such articles are individually curated and edited by Space Media Network staff on the basis of the report's information value to our industry and professional readership. Advertising does not imply endorsement, agreement or approval of any opinions, statements or information provided by Space Media Network on any Web page published or hosted by Space Media Network. General Data Protection Regulation (GDPR) Statement Our advertisers use various cookies and the like to deliver the best ad banner available at one time. All network advertising suppliers have GDPR policies (Legitimate Interest) that conform with EU regulations for data collection. By using our websites you consent to cookie based advertising. If you do not agree with this then you must stop using the websites from May 25, 2018. Privacy Statement. Additional information can be found here at About Us.|