NASA uses pi every day! http://www.nasa.gov/sites/default/files/thumbnails/image/pia23916.jpg

Sometime in the far distant future, about 4 billion years from now, our Milky Way galaxy will collide with the neighboring Andromeda galaxy, as illustrated in this artist rendition. http://www.nasa.gov/sites/default/files/thumbnails/image/654242main_p1220b3k.jpg

An illustration of NASA’s Ingenuity Helicopter flying on Mars. http://www.nasa.gov/sites/default/files/thumbnails/image/pia24466-3000.jpg

On March 18, 1978, space shuttle Enterprise arrived at NASA’s Marshall Space Flight Center for mated vertical ground vibration testing. http://www.nasa.gov/sites/default/files/thumbnails/image/7887863_1041x833.jpg

Spring doesn't just hapen on Earth. Spring also happens on some of our neighboring planets in the solar system. http://www.nasa.gov/sites/default/files/images/554241main_pia11667_full.jpg

NASA has investigated humanity's impact on a number of our home planet's natural resources and recently explored our impact on freshwater resources. http://www.nasa.gov/sites/default/files/thumbnails/image/lakemead.jpg

More than 11,000 years ago, a massive, supergiant star came to the end of its life. http://www.nasa.gov/sites/default/files/images/630022main_pia15480-full_full.jpg

This image, taken on March 5, 2021, shows NASA astronaut Kate Rubins during a spacewalk to install solar array modification kits on the station. http://www.nasa.gov/sites/default/files/thumbnails/image/iss064e039827_0.jpg

A field of sand dunes occupies this frosty 5-kilometer diameter crater in the high-latitudes of the northern plains of Mars. http://www.nasa.gov/sites/default/files/thumbnails/image/pia24420.jpeg

Expedition 65 backup and prime crew members are seen during a press conference. http://www.nasa.gov/sites/default/files/thumbnails/image/51069696391_fa096c36cf_o.jpeg

This artist's concept is of a Jupiter-mass planet orbiting the nearby star Epsilon Eridani. http://www.nasa.gov/sites/default/files/thumbnails/image/full_jpg_1.jpeg

Set to launch next year, NASA’s Psyche spacecraft will explore a metal-rich asteroid of the same name in the main asteroid belt between Mars and Jupiter. http://www.nasa.gov/sites/default/files/thumbnails/image/pia24472-psyche-asteroid-illustration-16_0.jpg

As a payload communications manager Penny J. Pettigrew spends most days in the Payload Operations Integration Center at Marshall Space Flight Center. http://www.nasa.gov/sites/default/files/thumbnails/image/elg_1889.jpg

This view of Earth’s horizon as the Sun sets over the Pacific Ocean was taken by the Expedition 7 crew onboard the International Space Station in 2003. http://www.nasa.gov/sites/default/files/thumbnails/image/5091372229_ebca868ffd_o.jpeg

This image taken by the NASA/ESA Hubble Space Telescope revisits the Veil Nebula, which was featured in a previous Hubble image release. http://www.nasa.gov/sites/default/files/thumbnails/image/potw2113a.jpg

Northrop Grumman's Cygnus resupply ship, with its prominent cymbal-shaped UltraFlex solar arrays is pictured attached to the space station. http://www.nasa.gov/sites/default/files/thumbnails/image/iss064e047042.jpg

The Soyuz rocket is rolled out by train to the launch pad at Site 31, Tuesday, April 6, 2021, at the Baikonur Cosmodrome in Kazakhstan. http://www.nasa.gov/sites/default/files/thumbnails/image/51098576589_a0e8182e15_o.jpeg

Today is World Health Day and we're funding studies to determine whether environmental factors influence the spread of the virus. http://www.nasa.gov/sites/default/files/thumbnails/image/ecostress_lst_milpitasca_22may2020.jpg

A sea of dark dunes, sculpted by the wind into long lines, surrounds Mars' northern polar cap and covers an area as big as Texas. http://www.nasa.gov/sites/default/files/images/504716main_pia13662-full_full.jpg

Mary W. Jackson (second from left) seen in 1984 Student Symposium at Langley Research Center. http://www.nasa.gov/sites/default/files/thumbnails/image/lrc-1984-b701_p-03279_large.jpeg