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Bus-size asteroid to zoom by Earth, ducking below satellites

This image from video made available by NASA's Center for Near-Earth Object Studies shows the path of asteroid 2020 SW as it safely passes Earth on Thursday, Sept. 24, 2020. Orbiting the Earth is the location of a typical geosynchronous satellite (labeled This image from video made available by NASA's Center for Near-Earth Object Studies shows the path of asteroid 2020 SW as it safely passes Earth on Thursday, Sept. 24, 2020. Orbiting the Earth is the location of a typical geosynchronous satellite (labeled "GEOSAT"), orbiting 22,000 miles (36,000 kilometers) above Earth's equator. At bottom right is the moon. (NASA/JPL-Caltech via AP) | Photo: AP.

By MARCIA DUNN
Updated: September 23, 2020 02:37 PM
Created: September 23, 2020 12:03 PM

CAPE CANAVERAL, Fla. (AP) - An asteroid the size of a school bus is headed our way, but NASA says the space rock will zoom safely past Earth on Thursday.

The newly discovered asteroid will come within 13,000 miles (22,000 kilometers) of Earth, well below many of the communications satellites orbiting the planet, scientists said this week. The closest approach will occur Thursday morning over the southeastern Pacific Ocean.

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Once it's gone, the asteroid won't be back to Earth's neighborhood until 2041.

Scientists estimate the asteroid is between 15 feet and 30 feet (4.5 meters to 9 meters). By asteroid standards, that's considered puny. Asteroids of this size hit Earth's atmosphere and burn up once every year or two, said Paul Chodas, director of the Center for Near-Earth Object Studies at NASA's Jet Propulsion Laboratory. There could be as many as 100 million of these little asteroids out there.

The real threat are considerably bigger asteroids. The good news is that these are easier to spot much sooner than just a few days out.

Asteroid 2020 SW, as it is known, was discovered last Friday by the Catalina Sky Survey at the University of Arizona in Tucson.

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The Associated Press Health and Science Department receives support from the Howard Hughes Medical Institute's Department of Science Education. The AP is solely responsible for all content.


(Copyright 2020 by The Associated Press. All Rights Reserved.)

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