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JPL-Caltech

Cassiopeia A is the remnant of a once massive star that died in a violent supernova explosion 325 years ago. It consists of a dead star, called a neutron star, and a surrounding shell of material that was blasted off as the star died. This image is a composite using three NASA observatories in three different wavelengths of light: infrared data from the Spitzer Space Telescope (red), visible data from Hubble (yellow), and x-ray data from Chandra (green and blue).

In this visualization of water on the moon, blue areas represent water ice on the lunar surface. The data, from NASA’s Moon Mineralogy Mapper, shows that most of the surface ice on the moon is concentrated near the poles.

The image reveals the crisp detail of the crater rim, with individual boulders around the outside and on the inner walls. That indicates that this crater probably isn't very old, so it hasn't been heavily modified. This odd shape probably happened when it first formed.

Perseverance took this selfie with the Ingenuity helicopter, seen here about 13 feet away from the rover, on April 6, 2021. The picture is made up of a sequence of 62 individual images, taken by a camera on the end of the rover's robotic arm, that were stitched together after they'd been sent back to Earth.

This enhanced-color image from the Mastcam-Z instrument aboard the Perseverance rover shows a sample tube inside the coring bit on August 6, 2021, after the rover made its first attempt to collect a core sample. That rock proved too crumbly to deliver a proper core.

This image, taken by a Hazard Avoidance Camera on NASA's Perseverance rover, shows the Martian rock nicknamed Rochette shortly after the rover had scoured a circular patch in its surface on August 27, 2021. After analyzing the resulting material, the Perseverance rover collected its first two core samples from this rock as part of its mission to send bits of Mars back to Earth.

NASA engineers add thermal protection to the body of the Ingenuity helicopter inside a vacuum chamber at the Jet Propulsion Laboratory in Pasadena, California, ahead of the spacecraft's launch to Mars. Since its first flight in April 2021, Ingenuity has completed 29 flights and covered more than four miles on the red planet.