A quick moving storm passes as teams from NASA and SpaceX practice procedures for medical emergency evacuation onboard the GO Searcher ship, Friday, August 15, 2019. http://www.nasa.gov/sites/default/files/thumbnails/image/48558947021_e5bbe7e521_k.jpg

A member of the audience takes a picture with their phone as Vice President Mike Pence is introduced during the sixth meeting of the National Space Council. http://www.nasa.gov/sites/default/files/thumbnails/image/48585166437_a1996c409c_k.jpg

Amazon rainforest fires causing smoke to drift across the whole of Brazil. http://www.nasa.gov/sites/default/files/thumbnails/image/brazil-nolabels.jpg

This Hubble image shows a dark, gloomy scene in the constellation of Gemini (the Twins). The subject of this image confused astronomers when it was first studied — rather than being classified as a single object, it was instead recorded as two objects, owing to its symmetrical lobed structure. http://www.nasa.gov/sites/default/files/thumbnails/image/potw1933a_0.jpg

In 1967, Christine Darden was added to the pool of 'human computers' who wrote complex programs and tediously crunched numbers for engineers at NASA's Langley Research Center. http://www.nasa.gov/sites/default/files/thumbnails/image/christine_darden_0.jpg

West Point graduate, physician and NASA astronaut Andrew Morgan is pictured working outside the International Space Station . http://www.nasa.gov/sites/default/files/thumbnails/image/iss060e043194.jpg

NASA cleared a milestone in preparation for Green Run testing of its Space Launch System (SLS) core stage with the lift and installation of the core stage pathfinder simulator onto the B-2 Test Stand. http://www.nasa.gov/sites/default/files/thumbnails/image/s19-033_ssc-20190824-s00721_pathfinder_lift.jpg

Spitzer Space Telescope into orbit around the Sun on Aug. 25, 2003. Since then, the observatory has been lifting the veil on the wonders of the cosmos, from our own solar system to faraway galaxies, using infrared light. http://www.nasa.gov/sites/default/files/thumbnails/image/1-pia16604-1041.jpg

NGC 5307, a planetary nebula that lies about 10,000 light-years from Earth, can be seen in the constellation Centaurus. http://www.nasa.gov/sites/default/files/thumbnails/image/potw1934a.jpg

NASA astronaut Christian Koch snapped this image of Hurricane Dorian as the International Space Station during a flyover on Monday, September 2, 2019. http://www.nasa.gov/sites/default/files/thumbnails/image/403c1251.jpg

At the Gagarin Cosmonaut Training Center in Star City, Russia, Expedition 61 crewmember Jessica Meir of NASA climbs aboard a Soyuz trainer during final crew qualification exams on Aug. 30. http://www.nasa.gov/sites/default/files/thumbnails/image/48648822377_a75caf73dd_k.jpg

Located in the northern constellation of Ursa Major, which also includes the Big Dipper, nearby galaxy Messier 81 is easily visible through binoculars or a small telescope. http://www.nasa.gov/sites/default/files/thumbnails/image/ssc2019-15b_med.jpg

On Sept. 4, 2019, a loose chain of tropical cyclones lined up across the Western Hemisphere. http://www.nasa.gov/sites/default/files/thumbnails/image/westernhemisphere_geos_2019246_lrg.jpg

Scientists with NASA's Mars 2020 mission and the European-Russian ExoMars mission traveled to the Australian Outback to hone their research techniques. http://www.nasa.gov/sites/default/files/thumbnails/image/pia23275_large.jpg

It's Back to School Week and NASA has activities to keep students motivated. http://www.nasa.gov/sites/default/files/thumbnails/image/grace_tf_1.jpg

NASA astronaut Mike Fincke works through a check list inside a mockup of Boeing's CST-100 Starliner during a simulation at NASA's Johnson Space Center on Aug. 21, 2019. http://www.nasa.gov/sites/default/files/thumbnails/image/jsc2019e050522.jpeg

This 2019 photo of Manhattan, taken by astronaut Nick Hague from aboard the International Space Station, shows a city totally recovered from the attack on September 11, 2001. http://www.nasa.gov/sites/default/files/thumbnails/image/nyc_2019.jpg

Mae Jemison, the first black woman in space, participated in crew egress training for Space Shuttle Endeavour's STS-47 mission during the Terminal Countdown Demonstration Test. http://www.nasa.gov/sites/default/files/thumbnails/image/ksc-392c-5029_fr-036.jpg

In this mage from June 2002, astronaut Franklin R. Chang-Diaz works with a grapple fixture during a spacewalk to perform work on the International Space Station. http://www.nasa.gov/sites/default/files/thumbnails/image/sts111-306-012_orig.jpg

Actor Brad Pitt speaks with NASA astronaut Nick Hague who is onboard the International Space Station, Monday, Sept. 16, 2019. http://www.nasa.gov/sites/default/files/thumbnails/image/48744814666_20e44539d3_k.jpg

This image shows sedimentary rock and sand within Danielson Crater, an impact crater about 42 miles or 67 kilometers in diameter, located in the southwest Arabia Terra region of Mars. http://www.nasa.gov/sites/default/files/thumbnails/image/pia23454.jpg