The space rock is heading in our direction at some 18,700 miles per hour, according to the space agency's data.
The $10 billion orbiting observatory will give astronomers a better sense of the near-Earth asteroid 2024 YR4's size and ...
An asteroid becomes a meteorite when it travels to Earth from a nearby orbit or the outer solar system and collides with Earth, according to the United States Geological Survey. Small asteroids ...
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