19hon MSN
YR4, which orbits the sun every four years and periodically crosses Earth's orbit. The nature of its orbit makes it a ...
NASA is monitoring three aircraft-sized asteroids that will zoom past the Earth later today at around 19,000 to 22,200 miles per hour.
The $488 million Spherex mission aims to explain how galaxies formed and evolved over billions of years, and how the universe ...
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