The interaction of two doomed stars has created this spectacular ring adorned with bright clumps of gas ­– a diamond necklace of cosmic proportions. http://www.nasa.gov/sites/default/files/thumbnails/image/potw2117a_1.jpg

Swati Mohan is currently the Mars 2020 Guidance, Navigation, and Controls Operations Lead, at NASA's Jet Propulsion Laboratory. http://www.nasa.gov/sites/default/files/thumbnails/image/3479px-nasa_perseverance_rover_landing_day_nhq202102180010.jpeg

On May 5, 1961, NASA astronaut Alan Shepard piloted his Freedom 7 Mercury capsule in a 15-minute suborbital flight, becoming America's first astronaut. In this image, he is shown being hoisted aboard a U.S. Marine helicopter after splashdown. The flight carried him to an altitude of 116 statute miles. http://www.nasa.gov/sites/default/files/images/340806main_GPN-2000-001361_full.jpg

When the the first Star Wars movie was released in 1977, it featured the now-iconic two-sun, “circumbinary” planet Tatooine. http://www.nasa.gov/sites/default/files/thumbnails/image/toi_1338_transit_still.jpg

A U.S. Marine helicopter recovery team hoists astronaut Alan Shepard from his Mercury spacecraft after a successful flight and splashdown in the Atlantic Ocean. http://www.nasa.gov/sites/default/files/thumbnails/image/s88-31386.jpeg

Astronaut and teacher Ricky Arnold is shown on his first spacewalk as a crewmember on STS-119. http://www.nasa.gov/sites/default/files/thumbnails/image/sts-119_eva1_arnold01.jpeg

This detailed image features Abell 3827, a galaxy cluster that offers a wealth of exciting possibilities for study. http://www.nasa.gov/sites/default/files/thumbnails/image/potw2118a.jpg

This June 2020 image from the Hubble Space Telescope shows the galaxy cluster MACS J0416. http://www.nasa.gov/sites/default/files/thumbnails/image/stsci-h-p2034b-m-1786x2000_0.png

OSIRIS-REx bids farewell to Asteroid Bennu and begins its long journey home. http://www.nasa.gov/sites/default/files/thumbnails/image/20210409t142536s732ncml0v008.png

Perseverance entry, descent, and landing lead Allen Chen, gives remarks during a NASA Perseverance rover mission landing update. http://www.nasa.gov/sites/default/files/thumbnails/image/50953499168_e88031c407_o.jpeg

NASA’s X-59 requires the use of creative and strategic supersonic technologies to control and soften the jarring sound as the aircraft flies faster than the speed of sound. http://www.nasa.gov/sites/default/files/thumbnails/image/p21-032-11_3.jpeg

This image taken with the NASA/ESA Hubble Space Telescope showcases the emission nebula NGC 2313. http://www.nasa.gov/sites/default/files/thumbnails/image/potw2119a.jpg

Flight Research Inc.’s Bell OH-58C Kiowa helicopter hovers over a helipad after completing an urban air mobility approach at NASA’s Armstrong Flight Research Center. http://www.nasa.gov/sites/default/files/thumbnails/image/afrc2021-0023-099_large.jpeg

The Sub-Mesoscale Ocean Dynamics Experiment (S-MODE) mission team hopes to learn more about small-scale movements of ocean water such as eddies. http://www.nasa.gov/sites/default/files/thumbnails/image/v2021005.swatlantic.crop_.small_.jpg

NASA astronaut Mark Vande Hei gets detailed views of his retina as part of regularly scheduled eye checks on the station. http://www.nasa.gov/sites/default/files/thumbnails/image/iss065e045357.jpg

NASA conducted its fourth RS-25 single-engine hot fire test of the year on May 20, 2021, a continuation of its seven-part test series. http://www.nasa.gov/sites/default/files/thumbnails/image/s21-021_ssc-20210521-s00190_rs-25_test.jpg

The SpaceX Crew Dragon Resilience is pictured shortly before undocking from the International Space Station's Harmony module. http://www.nasa.gov/sites/default/files/thumbnails/image/iss065e011343.jpg

Pauline Hwang is currently the Strategic Mission Manager for Mars 2020 Surface Operations. http://www.nasa.gov/sites/default/files/thumbnails/image/50960340847_a99169ea8c_k.jpeg

In just over a week, these tiny squids will head to space along with many other scientific experiments aboard SpaceX’s 22nd cargo resupply mission to the station. http://www.nasa.gov/sites/default/files/thumbnails/image/02_babysquid_008.jpg

Threads of superheated gas and magnetic fields are weaving a tapestry of energy at the center of the Milky Way galaxy. A new image of this new cosmic masterpiece was made using a giant mosaic of data from NASA's Chandra X-ray Observatory and the MeerKAT radio telescope in South Africa. http://www.nasa.gov/sites/default/files/thumbnails/image/gcenter-2021.jpg