Morning Overview on MSN
A near-Earth object NASA tracked as an asteroid turned out to be a comet in disguise
A near-Earth object that spent more than two decades in planetary defense catalogs as an asteroid has been reclassified after ...
Morning Overview on MSN
NASA is building a telescope whose only job is to spot city-killer asteroids first
NASA’s Planetary Defense Coordination Office is actively building the first space telescope designed from scratch to hunt ...
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