SpaceX Scrubs Launch of NASA SPHEREx and PUNCH Missions

Two NASA missions will have to wait longer for a launch aboard a single rocket. Both aim to unravel mysteries about the universe — one by peering far from Earth, the other by looking closer to home.

SpaceX on Saturday night announced on the website X around two hours before the scheduled launch time of 10:09 p.m. Eastern that it needed to continue checking the Falcon 9 rocket that was to lift the vehicles to orbit.

The company said it would announce the next launch attempt when it was possible to do so from Vandenberg Space Force Base in California.

The rocket’s chief passenger is SPHEREx, a space telescope that will take images of the entire sky in more than a hundred colors that are invisible to the human eye. Accompanying the telescope is a suite of satellites known collectively as PUNCH, which will study the sun’s outer atmosphere and solar wind.

What is SPHEREx?

SPHEREx is short for Spectro-Photometer for the History of the Universe, Epoch of Reionization and Ices Explorer. The mouthful of a name is fitting for the vastness of its goal: to survey the entire sky in 102 colors, or wavelengths, of infrared light.

The space telescope, which looks like a giant megaphone, will record around 600 images each day, capturing light from millions of stars in our cosmic backyard and even more galaxies beyond it. Using a technique called spectroscopy, SPHEREx will separate the light into different wavelengths, like a glass prism splitting white light into a rainbow of colors. The color spectrum of an object in space reveals information about its chemical makeup and distance from Earth.