Closer to home in our own Milky Way galaxy, Spherex will hunt for water and other ingredients of life in the icy clouds between stars where new solar systems emerge.
The cone-shaped Spherex — at 1,110 pounds (500 kilograms) or the heft of a grand piano — will take six months to map the entire sky with its infrared eyes and wide field of view. Four full-sky surveys are planned over two years, as the telescope circles the globe from pole to pole 400 miles (650 kilometers) up.
Spherex won't see galaxies in exquisite detail like NASA's larger and more elaborate Hubble and Webb space telescopes, with their narrow fields of view.
Instead of counting galaxies or focusing on them, Spherex will observe the total glow produced by the whole lot, including the earliest ones formed in the wake of the universe-creating Big Bang.