This object is, in fact, a pair: a white dwarf star that steadily burns at a relatively cool temperature and a highly variable red giant. via NASA https://ift.tt/PNOsocXmL

​The bright Sun dissects the airglow above Earth’s horizon in this view photographed with a digital still camera from during the STS-107 mission. via NASA https://ift.tt/JFSRXDtaz

To learn how ocean water is melting glaciers, NASA’s Oceans Melting Greenland mission extensively surveyed the coastline of the world’s largest island. via NASA https://ift.tt/9Xk5NAsDh

In this image taken in 1985, four members of the Challenger STS-51L crew train on the flight deck of the shuttle crew compartment. via NASA https://ift.tt/34chsw2

On Jan. 27, 1967, tragedy struck on the launch pad at Cape Kennedy during a preflight test for Apollo 204 (AS-204). via NASA https://ift.tt/3AA4WT8

Much like the sky, rivers are rarely painted one color. via NASA https://ift.tt/3o1K0PN

This colorized schlieren image is of a small-scale model of NASA’s X-59 Quiet SuperSonic Technology airplane. via NASA https://ift.tt/3qZQDnI

NASA’s Jet Propulsion Laboratory is designing mission concepts to survive the planet’s extreme temperatures and atmospheric pressure. via NASA https://ift.tt/3tOQC82

The spiral arms of the galaxy NGC 3318 are lazily draped across this image from the NASA/ESA Hubble Space Telescope. This spiral galaxy lies in the constellation Vela and is roughly 115 light-years away from Earth. via NASA https://ift.tt/3GS95UL

In this image from Jan. 9, 2022, NASA astronaut Kayla Barron peered out from a window inside the International Space Station’s cupola. via NASA https://ift.tt/3fJcHN2