NASA finds 1000 nearby asteroids on Earth
1000th near-Earth asteroid: The Jet Propulsion Laboratory (JPL) of the National Aeronautics and Space Administration (NASA) marked on August 14th 2021 the 1000th over 1.7 million kilometres. The asteroid posed no threat to Earth, but it was a historic event. Just seven days after 2021 PJ1, the 1001st asteroid "2016 AJ193" on August 22nd bursts earth at a distance of about 3.4 million kilometres. Between 20 and 30 meters, the asteroid PJ1 was too small in 2021, so no detailed radar images were obtained, said Lance Benner, director of the asteroid radar research program at the Jet Propulsion Laboratory at NASA. Planetary radar was powerful , however, grim enough to detect the asteroid at this distance and knives its speed with great precision.
This helped the laboratory study the motion of the asteroid PJ1 in the future in 2021. Radar observation of asteroids. The first radar sighting of asteroids is a powerful technique used to observe the passage of near-earth asteroids (NEA) and comets. NEA en Comets were referred to as a Near-Earth Object (NEO). The first radar sighting of the asteroid "1566 lcarus" took place in 1968.
About 27,000 near-Earth asteroids (NEA) are known to exist in our solar system.
Importance of radar observation of asteroids
Radar observation of asteroids has improved knowledge of near-Earth objects (NEOs), predicted their motion or orbit in the future over decades or centuries, and most importantly, researched whether an asteroid collides simply missing. . By observing the radar, scientists can obtain detailed information about the physical properties of nearby land objects. Depending on the size and distance of an asteroid from Earth, the radar system can image the surface in great detail.
The observation of asteroids by planetary radar is important for the surveillance of asteroids and the detection of potentially dangerous objects near the Earth and contributes greatly to the defense of the planet.
How did NASA's JPL map the 1000th near-Earth asteroid?
Lance Benner, who along with his team led the asteroid radar research program at NASA's Jet Propulsion Laboratory, used the space station's 70-meter-deep antenna (DSS)-14 at the Deep Space Network's Goldstone Deep Space complex in California. Send radio waves - send to the asteroid and receive radar reflections, also known as echoes from the asteroid.
The Goldstone Deep Space Complex's DSS-14 antenna and DSS-13 antenna have detected 374 Near Earth Asteroids (NEA) to date.
Sources:- Jagran josh
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