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

This image shows the spiral galaxy NGC 5037, in the constellation of Virgo. http://www.nasa.gov/sites/default/files/thumbnails/image/potw2121a.jpg

This visualization of supercomputer data shows the X-ray glow of the inner accretion disc of a black hole. http://www.nasa.gov/sites/default/files/thumbnails/image/blackholexray.png

When NASA digital strategist Andres Almeida joined Twitter in 2009, one of the first accounts he followed was NASA. http://www.nasa.gov/sites/default/files/thumbnails/image/48798050788_d867ee3825_o.jpg

​NASA Administrator Bill Nelson talks to the agency’s workforce during his first State of NASA event Wednesday, June 2, 2021. http://www.nasa.gov/sites/default/files/thumbnails/image/51221294498_8a0636de32_o.jpeg

Astronomers have detected X-rays from Uranus for the first time, using NASA’s Chandra X-ray Observatory, as shown in this image from March 2021. http://www.nasa.gov/sites/default/files/thumbnails/image/uranus_lg.jpeg

NASA astronaut Mark Vande Hei works on an investigation of how gravity affects immune response. http://www.nasa.gov/sites/default/files/thumbnails/image/02_iss065e056791_large.jpg

In this view from aboard the SpaceX Crew Dragon Endeavour, a pair of the International Space Station's main solar seemingly arrays drape across the Earth's horizon. http://www.nasa.gov/sites/default/files/thumbnails/image/iss065e049854.jpg

One definition for goulash, according to the Merriam-Webster dictionary, is mixture of heterogeneous elements, jumble. This 2017 image of Arp 299 is just that. http://www.nasa.gov/sites/default/files/thumbnails/image/arp299.jpg

A partial solar eclipse is seen as the Sun rises behind the United States Capitol Building, Thursday, June 10, 2021, as seen from Arlington, Virginia. http://www.nasa.gov/sites/default/files/thumbnails/image/51238521674_3297226a3a_o.jpeg

The beauty of our home planet is shown in this long exposure photograph, taken from the International Space Station. http://www.nasa.gov/sites/default/files/thumbnails/image/iss065e081769.jpg

June 14 of each year is celebrated as Flag Day in the U.S. http://www.nasa.gov/sites/default/files/thumbnails/image/as16-113-18339.4web.png

Teams with NASA’s Exploration Ground Systems and contractor Jacobs lower the Space Launch System (SLS) core stage – the largest part of the rocket – onto the mobile launcher. http://www.nasa.gov/sites/default/files/thumbnails/image/ksc-20210612-ph-csh01_0108_orig.jpeg