Skip to main content
  1. Home
  2. Space
  3. News

NASA will survey the entire sky with its SPHEREx observatory

By

NASA is ramping up plans for a new sky survey tool that could help unravel some of the biggest mysteries about the origin of the universe.

Exploring Cosmic Origins with NASA’s SPHEREx

The mission, called SPHEREx or Spectro-Photometer for the History of the Universe, Epoch of Reionization and Ices Explorer, is set to launch by April 2025 and will investigate big questions in cosmology, such as what happened in the first few seconds after the Big Bang and how the universe developed and evolved. To investigate these issues, the mission is different from telescopes like Hubble which look at individual stars or galaxies. Instead, SPHEREx is a type of mission called a survey telescope, which looks at the entire sky. That enables it to see information about the universe on a large scale.

Illustration of NASA’s SPHEREx spacecraft.
Illustration of NASA’s SPHEREx spacecraft. NASA/JPL-Caltech

“It’s the difference between getting to know a few individual people, and doing a census and learning about the population as a whole,” said Beth Fabinsky, deputy project manager for SPHEREx at NASA’s Jet Propulsion Laboratory (JPL), in a statement. “Both types of studies are important, and they complement each other. But there are some questions that can only be answered through that census.”

Recommended Videos

SPHEREx uses different hardware from telescopes like Hubble and James Webb as well. Instead of having a very large mirror that can focus on very distant objects, it will have a primary mirror just 8 inches across. But it will be able to scan 99% of the sky every six months, which is far faster than these other telescopes. Like Webb, SPHEREx will look in the infrared wavelength and will use an instrument called a spectrometer which breaks down light to see what distant objects are composed of.

With the concept for the mission pinned down, now the team is working on getting the hardware ready for space. “We’re at the transition from doing things with computer models to doing things with real hardware,” said Allen Farrington, SPHEREx project manager at JPL. “The design for the spacecraft, as it stands, is confirmed. We have shown that it’s doable down to the smallest details. So now we can really start building and putting things together.”

The mission has faced delays due to covid, but the aim is to launch SPHEREx into low-Earth orbit by 2025 at the latest.

Editors’ Recommendations

Topics
Georgina Torbet
Georgina Torbet
Space Writer
Georgina is the Digital Trends space writer, covering human space exploration, planetary science, and cosmology. She…
Webb captures a Penguin and an Egg for its two-year anniversary
This “penguin party” is loud! The distorted spiral galaxy at center, the Penguin, and the compact elliptical galaxy at left, the Egg, are locked in an active embrace. A new near- and mid-infrared image from the James Webb Space Telescope, taken to mark its second year of science, shows that their interaction is marked by a faint upside-down U-shaped blue glow.

This “penguin party” is loud! The distorted spiral galaxy at center, called the Penguin, and the compact elliptical galaxy at left, called the Egg, are locked in an active embrace. A new near- and mid-infrared image from the James Webb Space Telescope, taken to mark its second year of science, shows that their interaction is marked by a faint upside-down U-shaped blue glow. NASA, ESA, CSA, STScI

Today, July 12, marks two years since the first images from the James Webb Space Telescope were unveiled. In that time, Webb has discovered the most distant galaxies known, uncovered surprises about the early universe, peered into the atmospheres of distant planets, and produced a plethora of beautiful images of space.

Read more
Boeing and NASA in no rush to bring Starliner astronauts back from space station
NASA’s Boeing Starliner Crew Flight Test astronauts Butch Wilmore and Suni Williams giving an interview on board the International Space Station on Wednesday July 10.

NASA’s Boeing Starliner Crew Flight Test astronauts Butch Wilmore and Suni Williams givie an interview on board the International Space Station on Wednesday, July 10. NASA TV

Two NASA astronauts will remain on the International Space Station (ISS) for at least several more weeks, as testing continues on the troubled Boeing Starliner that carried them to the station on its first crewed test flight. Butch Wilmore and Suni Williams are safe on the station and, NASA insists, not stranded, but they will not yet be returning home due to thruster issues with their spacecraft.

Read more
NASA is about to give an important update on Starliner spacecraft
Boeing's Starliner capsule docked at the ISS.

Boeing's Starliner spacecraft remains docked at the International Space Station. NASA

NASA will offer an update on Wednesday regarding the Boeing Starliner spacecraft currently stuck at the International Space Station (ISS).

Read more