Earth, Asteroid and YR4
While finding massive metallic rocks in space is relatively easy, asteroids that are just ten metres in size are far harder ...
YR4's odds jumped to a 1-in-32 chance of impact, though that number will likely fall as the asteroid continues to be monitored.
The space rock is heading in our direction at some 18,700 miles per hour, according to the space agency's data.
Near-Earth Objects (NEOs) are asteroids or comets nudged into our neighborhood of space by the gravitational attraction of nearby planets. They are chunks of rock, metal or ice left over from ...
Near-Earth objects are found when they reflect starlight, and huge asteroids, the sort that could end civilization, are essentially giant spherical mirrors floating about in space—very easy to ...
An artist's impression shows a generic asteroid. Detecting the threat of near-Earth objects such as asteroids that could cause harm to our planet is a primary focus of NASA and other space ...
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