comscore Bus-size asteroid to zoom by Earth, ducking below satellites | Honolulu Star-Advertiser
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Bus-size asteroid to zoom by Earth, ducking below satellites

  • NASA/JPL-CALTECH VIA ASSOCIATED PRESS
                                This image from video made available by NASA’s Center for Near-Earth Object Studies shows the projected path of asteroid 2020 SW as it safely passes Earth on Thursday. Orbiting the Earth is the location of a typical geosynchronous satellite (labeled “GEOSAT”), orbiting 22,000 miles above Earth’s equator. At bottom right is the moon.

    NASA/JPL-CALTECH VIA ASSOCIATED PRESS

    This image from video made available by NASA’s Center for Near-Earth Object Studies shows the projected path of asteroid 2020 SW as it safely passes Earth on Thursday. Orbiting the Earth is the location of a typical geosynchronous satellite (labeled “GEOSAT”), orbiting 22,000 miles above Earth’s equator. At bottom right is the moon.

CAPE CANAVERAL, Fla. >> 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 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.

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. 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 is 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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