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The Crab Nebula is a remnant of a supernova explosion, captured by the Spitzer Telescope.

NASA’s Spitzer Space Telescope is retiring after 16 years. Its incredible infrared images revealed nebulae and galaxies as we’d never seen...

NASA's iconic Spitzer observatory is ending its mission. Look back at its awe-inspiring discoveries and images.
Engineers observe the first driving test for NASA's Mars 2020 rover at the Jet Propulsion Laboratory in Pasadena, California, December 17, 2019.

NASA has big plans for the 2020s, from powerful new space telescopes to a hunt for alien life on a moon of Saturn. Here’s the timeline.

One year ago, NASA announced it would send astronauts back to the moon. Since then, new spacecraft and telescopes have filled its plans for the 2020s.
Saturn's largest moon, Titan, passes the planet undergoing seasonal changes in this natural color view from NASA's Cassini spacecraft.

20 new moons were just discovered orbiting Saturn, and you can help name them

Saturn now has more moons than any other planet in our solar system. You can suggest names for 20 newly discovered moons in a Twitter contest.
An infrared view of Uranus over two days in July 2004.

Uranus is hiding 13 invisible rings. These images captured their warm glow for the first time.

Astronomers measuring heat in Uranus' atmosphere stumbled upon its rings and measured their temperature for the first time: -320 degrees Fahrenheit.
When a star like our sun dies, it casts off its outer layers of gas, leaving only the hot core behind. A burned-out star, called a white dwarf, is the white dot in the center of this image taken by the Hubble Space Telescope.

Dead planets can ‘broadcast’ for up to a billion years, and they could tell astronomers what will happen after our sun blows up

Finding dead planets' radio broadcasts can help scientists learn how the sun's death in 5 billion years will affect our solar system.
Researchers used this telescope at Las Campanas Observatory in Chile to image the entire Milky Way and find "cepheid" stars.

A new 3D map of the Milky Way reveals our galaxy’s warped shape in unprecedented detail

The Milky Way's S-shaped curve is still a mystery. But now scientists have mapped it in detail by measuring the distances of thousands of stars.
An illustrated interpretation of what GJ 357 d may look like.

Astronomers have discovered a potentially habitable world just 31 light-years away, thanks to NASA’s planet-hunting telescope

TESS, a space telescope searching for alien worlds, helped astronomers discover a potentially watery new planet. It's one of the nearest known worlds.
Artist concept of a super-Earth

NASA’s newest planet-hunting telescope just discovered a ‘super-Earth’ and 2 ‘sub-Neptunes’ less than 75 light-years awa...

TESS, the space telescope searching for alien worlds, has discovered three nearby exoplanets that could offer clues about how planets form.
The Transiting Exoplanet Survey Satellite (TESS) took this snapshot of the Large Magellanic Cloud (right) and the bright star R Doradus (left) with just a single detector of one of its cameras. It's part of TESS' “first light” image.

This image could contain hundreds of nearby undiscovered planets — including a few like Earth

NASA has released the first images from its new orbiting space telescope. TESS, or the Transiting Exoplanet Survey Satellite, could discover thousands of new planets.
NASA's James Webb telescope is scheduled to blast into space in 2019, where it will probe distant corners of the known universe, studying exoplanets.

NASA could detect alien life on other worlds using a telescope-powered ‘sniff test’

Detecting life on other planets remains an elusive goal. Scientists at the University of Washington think a new kind of chemical test might help.