Asteroid 2024 DW flew about 139,000 miles (224,000 km) away from Earth. The space rock was estimated to be about 43 feet wide (13 m). Credit: Space.com | animation: NASA/JPL-Caltech | edited by Steve ...
The NASA Deep Impact mission was the first attempt to expose the pristine interior of a comet by intentionally striking its nucleus.1 The impactor probe, a copper-fortified mass, collided with Comet ...
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