YR4, which orbits the sun every four years and periodically crosses Earth's orbit. The nature of its orbit makes it a ...
NASA labels objects that come within 4.6 million miles of Earth and are larger than 492 feet as a “potentially hazardous ...
Potentially hazardous asteroids are NEOs that are larger than 460 feet (140 meters) in diameter and that could come within 4.65 million miles (7.48 million km) of Earth, or roughly 20 times the ...
"Not all NEOs are potentially hazardous, but all hazardous objects are NEOs," Martin Barstow, a professor of astrophysics and space science at the University of Leicester in the United Kingdom ...
Space agencies have systems in place to spot, track, and forecast the future orbits of potentially hazardous asteroids.
Astronomers believe thousands of large undiscovered asteroids, that could cause regional damage, may be in space.
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