NASA’s SPHEREx mission aims to map 450 million galaxies and 100 million stars

NASA’s SPHEREx mission aims to map 450 million galaxies and 100 million stars

An extraordinary new NASA mission aims to map the sky in unprecedented detail and color.

Construction has begun on SPHEREx, a new space observatory that will map more than 450 million galaxies as well as 100 million stars in our galaxy, across 96 color bands in the infrared range of the electromagnetic spectrum. Over its planned two-year lifespan, SPHEREx will map the entire sky, producing two maps per year, according to NASA’s Jet Propulsion Laboratory (JPL).

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