On July 21, 1969, command and service module pilot Michael Collins photographed this close-up view of the docking target on the Apollo 11 Lunar Module from the Command Module. http://www.nasa.gov/sites/default/files/thumbnails/image/as11-36-5365.jpg

NASA is developing technologies to send humans to the Red Planet. http://www.nasa.gov/sites/default/files/thumbnails/image/2-heat_shield.jpg

Comet NEOWISE streaked across the sky above the tree line of Lone Pine Lake, located on the Mount Whitney Trail in the Eastern Sierra Nevada Mountains in California. http://www.nasa.gov/sites/default/files/thumbnails/image/afrc2020-0073-1.jpg

This image, taken on July 24, 1969, shows the Apollo 11 command codule and the Mobile Quarantine Facility (MQF) are photographed aboard the USS Hornet http://www.nasa.gov/sites/default/files/thumbnails/image/s69-40758.jpg

Carried by a balloon the size of a football stadium, ASTHROS will use a telescope to observe wavelengths of light that aren't visible from the ground. http://www.nasa.gov/sites/default/files/thumbnails/image/high-altitude-balloon-1041.jpg

This image of Jezero Crater, the landing site for the Mars Perseverance Rover, was taken by instruments on NASA's Mars Reconnaissance Orbiter. http://www.nasa.gov/sites/default/files/thumbnails/image/jezerocrater.jpg

A United Launch Alliance Atlas V rocket with NASA’s Mars 2020 Perseverance rover onboard is seen as it is rolled out of the Vertical Integration Facility to the launch pad at Space Launch Complex 41. http://www.nasa.gov/sites/default/files/thumbnails/image/50163611512_570c85f8a7_k.jpg

A United Launch Alliance Atlas V rocket with NASA’s Mars 2020 Perseverance rover onboard is seen illuminated by spotlights on the launch pad at Space Launch Complex 41. http://www.nasa.gov/sites/default/files/thumbnails/image/50164230653_d9cf74d82d_k_0.jpg

The engines fired as a United Launch Alliance Atlas V rocket with NASA’s Mars Perseverance rover onboard launched from Space Launch Complex 41, Thursday, July 30, 2020. http://www.nasa.gov/sites/default/files/thumbnails/image/50170171651_23d59dc5e1_k.jpg

A United Launch Alliance Atlas V rocket with NASA’s Mars 2020 Perseverance rover onboard launches from Space Launch Complex 41 at Cape Canaveral Air Force Station, Thursday, July 30, 2020. http://www.nasa.gov/sites/default/files/thumbnails/image/50169613626_c78b8060d6_k.jpg

Astronauts Doug Hurley and Bob Behnken of NASA's Commercial Crew Program are aboard the SpaceX Crew Dragon as it approaches the International Space Station. http://www.nasa.gov/sites/default/files/thumbnails/image/49960375231_8692adf2b8_k.jpg

NASA astronauts Robert Behnken, left, and Douglas Hurley are seen inside the SpaceX Crew Dragon Endeavour spacecraft onboard the SpaceX GO Navigator recovery ship shortly after having landed in the Gulf of Mexico. http://www.nasa.gov/sites/default/files/thumbnails/image/50182385066_d1ff8f191c_k.jpg

Robert Behnken and Douglas Hurley are aboard the SpaceX Crew Dragon Endeavour spacecraft as it is lifted onto the SpaceX GO Navigator recovery ship shortly after landing. http://www.nasa.gov/sites/default/files/thumbnails/image/50182062843_ecd7170c8e_k.jpg

For decades, astronomers have known about irregular outbursts from the double star system V745 Sco, which is located about 25,000 light years from Earth. http://www.nasa.gov/sites/default/files/thumbnails/image/v745sco3d.jpg

NASA's Curiosity Mars Rover touched down eight years ago, on Aug. 5, 2012, and will soon be joined by a second rover, Perseverance. http://www.nasa.gov/sites/default/files/thumbnails/image/pia22486-main.jpg

This long-exposure photograph captures a starry sky above the Earth's atmospheric glow. http://www.nasa.gov/sites/default/files/thumbnails/image/iss063e065220.jpg

The barred spiral galaxy known as NGC 4907 shows its starry face from 270 million light-years away to anyone who can see it from the Northern Hemisphere. Appearing in this Hubble image to shine brightly below the galaxy is a star that is actually within our own Milky Way galaxy. http://www.nasa.gov/sites/default/files/thumbnails/image/potw2031a.jpg

NASA's OSIRIS-REx is ready for touchdown on asteroid Bennu. http://www.nasa.gov/sites/default/files/thumbnails/image/updatedtagpose.png

If humans could travel to this giant planet, we would see a world still glowing from the heat of its formation with a color reminiscent of a dark cherry blossom, a dull magenta. http://www.nasa.gov/sites/default/files/thumbnails/image/1920px-astronomers_image_lowest-mass_exoplanet_around_a_sun-like_star.jpg

As of March 2020, our Mars Odyssey has captured these six views of the Martian moon Phobos. http://www.nasa.gov/sites/default/files/thumbnails/image/pia23893.jpg