![]() If an asteroid of this size did strike the planet, Johnson says, it could make a crater 6 miles wide, and the area of devastation would be as much as 100 times larger. The spacecraft is on its way home and should be back on Earth in 2023. In October, an arm of OSIRIS-REx briefly touched the surface of the asteroid to collect a rock sample. Bennu will pose no danger at that time, but Earth's gravity will alter the asteroid's path around the sun and affect its possibility of coming back and going splat. ![]() The researchers have published their predictions in the journal Icarus, and they say the asteroid will make a close approach to Earth in 2135. "The OSIRIS-REx mission has provided exquisitely precise data on Bennu's position and motion through space to a level never captured before on any asteroid," says Lindley Johnson, the planetary defense officer at NASA's Planetary Defense Coordination Office at NASA headquarters in Washington. The researchers even checked to see if OSIRIS-REx pushed the asteroid off course when the spacecraft briefly touched its rocky surface it turns out this sample collection maneuver had a negligible effect, as expected. To predict its future path, the team took into account all kinds of small influences, including the effect of sunlight hitting Bennu, the tiny gravitational pull of more than 300 other asteroids, and the drag caused by interplanetary dust. The spacecraft arrived at Bennu in 2018 and spent about two years flying around it like a hummingbird, studying it closely before nabbing a sample of its rubble and heading home.Īll of its measurements have given researchers an unprecedented ability to understand where this asteroid is and where it might go. NASA's OSIRIS-REx spacecraft has been orbiting an asteroid called Bennu for more than two years to fine-tune the agency's existing models of its trajectory.In 2016, NASA launched the OSIRIS-REx mission to collect a sample of Bennu's rocks and to learn more about the asteroid's size, shape and composition. Scientists Fine-Tune Odds of Asteroid Bennu Hitting Earth () 49 Posted by BeauHD on Thursday Aug06:00AM from the you-can-rest-a-little-easier dept. Hear the biggest stories from the world of science 18 March 2021. "As a result, scientists behind new research now say they're confident that the asteroid's total impact probability through 2300 is just 1 in 1,750," reports. ![]() NASAs OSIRIS-REx spacecraft has been orbiting an asteroid called Bennu for more than two years to fine-tune the agencys existing models of its trajectory. Submitted at the Department of Philosophy, Logic and Scientific Method. ![]() sudden and inexplicable increase in the number of asteroids hitting us because this. Where anthropic reasoning does lead to chances that are observer-relative in an. NASA scientists believe that if the possibility of Bennu, an asteroid hitting Earth in a few years is keeping you awake at night you can now rest easier. From the report: Estimates produced before OSIRIS-REx arrived at the space rock tallied the cumulative probability of a Bennu impact between the years 21 at 1 in 2,700, according to NASA. While a slightly higher risk than past estimates, it represents a minuscule change in an already minuscule risk, NASA said. ![]() Technically, that's a small increase in risk, but the scientists behind the new research say they aren't worried about a potential impact. Home Live Science Scientists fine-tune odds of asteroid Bennu hitting Earth Scientists fine-tune odds of asteroid Bennu hitting Earth August 12, 2021. And besides, the lessons the research offers for asteroid trajectory calculation could reduce concerns about potential impacts by other asteroids more than enough to compensate. As a result, scientists behind new research now say theyre confident that the asteroids total impact probability through 2300 is just 1 in 1,750. "The impact probability went up just a little bit but it's not a significant change, the impact probability is pretty much the same," lead author Davide Farnocchia, who works at NASA's Center for Near Earth Object Studies in California, said during a news conference held Wednesday (Aug. In 1959, Arthur Samuel defined machine learning as a. "I think that, overall, the situation has improved. ![]()
0 Comments
Leave a Reply. |
AuthorWrite something about yourself. No need to be fancy, just an overview. ArchivesCategories |