This artist's concept shows exoplanet Kepler-1649c orbiting around its host red dwarf star. http://www.nasa.gov/sites/default/files/thumbnails/image/pia23689.jpg
The brilliant tapestry of young stars flaring to life resembles a glittering fireworks display in this Hubble Space Telescope image. http://www.nasa.gov/sites/default/files/thumbnails/image/location-smaller.png
A SpaceX Falcon 9 rocket with the company's Crew Dragon spacecraft onboard is seen illuminated on the launch pad at Launch Complex 39A as preparations continue for NASA’s SpaceX Demo-2 mission, Saturday, May 30, 2020. http://www.nasa.gov/sites/default/files/thumbnails/image/49951173438_f878865d38_k.jpg
SpaceX Falcon 9 rocket lifted off carrying the company's Crew Dragon spacecraft on NASA’s SpaceX Demo-2 mission with NASA astronauts Robert Behnken and Douglas Hurley onboard, Saturday, May 30, 2020. http://www.nasa.gov/sites/default/files/thumbnails/image/nhq202005300015.jpg
A SpaceX Falcon 9 rocket carrying the company's Crew Dragon spacecraft is launched from Launch Complex 39A on NASA’s SpaceX Demo-2 mission to the International Space Station. http://www.nasa.gov/sites/default/files/thumbnails/image/49953827947_b8cf984521_k.jpg
On Saturday, May 30, 2020, a SpaceX Falcon 9 rocket carrying the company's Crew Dragon spacecraft is launched on NASA’s SpaceX Demo-2 mission to the International Space Station. http://www.nasa.gov/sites/default/files/thumbnails/image/49957474237_63b71f73c4_k_0.jpg
A small glacier in the Arctic region of Norwegian archipelago Svalbard, as photographed by NASA's Airborne Tropical Tropopause Experiment (ATTREX). http://www.nasa.gov/sites/default/files/thumbnails/image/svalbardglacier-16.jpg
The samples Apollo 11 brought back to Earth from the Moon were humanity's first from another celestial body. The upcoming Perseverance rover mission will collect the first samples from another planet. http://www.nasa.gov/sites/default/files/thumbnails/image/pia23919-1041.jpg
Lightning flashes from a storm cloud to strike the ground. Such bolts represent only a small part of the overall phenomenon of lightning. http://www.nasa.gov/sites/default/files/thumbnails/image/3_iss057e055409.jpg
The stars of the globular cluster NGC 6441 sparkle peacefully in the night sky, about 13,000 light-years from the Milky Way’s galactic center. http://www.nasa.gov/sites/default/files/thumbnails/image/potw2022a.jpg
Exquisite layering is revealed emerging from the sand in southern Holden Crater. Sequences like these offer a window into Mars' complicated geologic history. http://www.nasa.gov/sites/default/files/thumbnails/image/pia23952.jpg
Japan's resupply ship, the H-II Transfer Vehicle-9 (HTV-9), is pictured attached to the International Space Station's Harmony module. http://www.nasa.gov/sites/default/files/thumbnails/image/iss063e024519.jpg
Like a wisp of green smoke, the aurora australis seemingly intersects with the Earth's airglow as the International Space Station orbited above the Indian Ocean halfway between Australia and Antarctica. http://www.nasa.gov/sites/default/files/thumbnails/image/iss063e025120.jpg
This illustration imagines the view from NASA's Cassini spacecraft during one of its final dives between Saturn and its innermost rings. http://www.nasa.gov/sites/default/files/thumbnails/image/pia22768.jpg
Looking deep into the universe, the Hubble Space Telescope catches a passing glimpse of the numerous arm-like structures that sweep around this barred spiral galaxy, known as NGC 2608. Appearing as a slightly stretched, smaller version of our Milky Way, the peppered blue and red spiral arms are anchored together by the prominent horizontal http://www.nasa.gov/sites/default/files/thumbnails/image/potw2023a.jpg
Launched on April 20, 2004, Gravity Probe B (GP-B) was a collaboration between Stanford University and NASA designed to test two previously untested aspects of Albert Einstein’s general theory of relativity. http://www.nasa.gov/sites/default/files/thumbnails/image/gpb.jpg
Seen here in incredible detail is the starburst galaxy formally known as PLCK G045.1+61.1. The galaxy, which appears as multiple reddish dots near the center of the image, is being gravitationally lensed by a cluster of closer galaxies, also seen in the image. http://www.nasa.gov/sites/default/files/thumbnails/image/potw2024a_0.jpg
This artist's concept shows an astronaut on Mars, as viewed through the window of a spacecraft. http://www.nasa.gov/sites/default/files/thumbnails/image/pia23900.jpg
Pilots Troy Asher and Wayne Ringelberg walk out of NASA’s Armstrong Flight Research Center’s (AFRC) hangar in Palmdale, California, toward the flight line. http://www.nasa.gov/sites/default/files/thumbnails/image/afrc2020-0063-15_orig.jpg
Pilots Troy Asher and Wayne Ringelberg walk out of NASA’s Armstrong Flight Research Center’s (AFRC) hangar in Palmdale, California, toward the flight line. http://www.nasa.gov/sites/default/files/thumbnails/image/afrc2020-0063-15_orig.jpg