Construction begins on NASA’s NEO Surveyor asteroid-hunting telescope

After recently passing a critical test, NASA’s Near-Earth Object (NEO) Surveyor — an infrared telescope that will search for potentially threatening asteroids — has entered the building phase.

NEO Surveyor is the successor to the space agency’s Near-Earth Object Wide-field Infrared Survey Explorer (NEOWISE) mission, which discovered thousands of near-Earth objects and classified them as asteroids or comets. When NEO Surveyor launches, it will be the first mission to seek out multiple near-Earths asteroids at once. Some of its hardware and instruments are now being built so that the telescope can ultimately detect even faint asteroids.

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