Major smashups between rocky bodies shaped our solar system. Observations of a similar crash give clues about how frequent these events are around other stars. http://www.nasa.gov/sites/default/files/thumbnails/image/pia25161_-_spitzer_collision_cloud.jpg

Astronaut Mark Vande Hei arrived at the International Space Station on April 9, 2021, and will return home March 30, 2022, after spending 355 days in low-Earth orbit. http://www.nasa.gov/sites/default/files/thumbnails/image/jsc2017e029829_large.jpg

NASA astronaut Mark Vande Hei, left, and cosmonauts Anton Shkaplerov, center, and Pyotr Dubrov are seen inside their Soyuz MS-19 spacecraft after landing. http://www.nasa.gov/sites/default/files/thumbnails/image/51970937381_9d3d2e370a_o.jpeg

NASA astronaut and SpaceX Crew-4 pilot Bob Hines is pictured during a training session inside a mockup of the Crew Dragon vehicle at SpaceX Headquarters. http://www.nasa.gov/sites/default/files/thumbnails/image/jsc2022e011412.jpg

Engineers and technicians are continuing to prepare for the Artemis I wet dress rehearsal test which is slated to begin on April 1 and conclude on April 3.   http://www.nasa.gov/sites/default/files/thumbnails/image/nasa_sls_artemis_i_horizontal.jpg

NASA’s Space Launch System (SLS) rocket with the Orion spacecraft aboard is seen at sunrise atop a mobile launcher at Launch Complex 39B, Monday, April 4, 2022. http://www.nasa.gov/sites/default/files/thumbnails/image/51982058640_3306aa1585_o.jpeg

Every winter, a layer of carbon dioxide frost (dry ice) forms on the surface of Mars. http://www.nasa.gov/sites/default/files/thumbnails/image/pia25190.jpeg

NASA and industry partners are working towards a future that sees aviation meet cleaner sustainability standards. http://www.nasa.gov/sites/default/files/thumbnails/image/glamor_shot_strms_3_blk.png

Japan's Geiyo Archipelago, in the Seito Inland Sea, was once home to pirates. http://www.nasa.gov/sites/default/files/thumbnails/image/pia25185.jpeg

SpaceX’s Axiom-1 is in the foreground on Launch Pad 39A with NASA’s Artemis I in the background on Launch Pad 39B on April 6, 2022. http://www.nasa.gov/sites/default/files/thumbnails/image/ksc-20220406-ph-jbp01-0001_orig.jpeg

SpaceX’s Axiom-1 is in the foreground on Launch Pad 39A with NASA’s Artemis I in the background on Launch Pad 39B on April 6, 2022. http://www.nasa.gov/sites/default/files/thumbnails/image/ksc-20220406-ph-jbp01-0001_orig.jpeg

A spectacular head-on collision between two galaxies fueled the unusual triangular-shaped star-birthing frenzy, as captured in this image from Hubble. http://www.nasa.gov/sites/default/files/thumbnails/image/hubble_arp143.png

On April 12, 1981, NASA launched is first Space Transportation System, or space shuttle, mission, carrying astronauts John Young and Robert Crippen into orbit. http://www.nasa.gov/sites/default/files/thumbnails/image/space_shuttle_columbia_launching.jpeg

What looks like a red butterfly in space is in reality a nursery for hundreds of baby stars, revealed in this infrared image from NASA's Spitzer Space Telescope. http://www.nasa.gov/sites/default/files/thumbnails/image/jpegpia23121.jpeg

This artist's impression is of a supermassive black hole that is inside the dust-shrouded core of a vigorously star-forming

NASA helped to create a web-based tool that helps park managers better understand the impact of outdoor lighting and noise on animal species in national parks. http://www.nasa.gov/sites/default/files/thumbnails/image/us_lights2.jpg

In this image from April 10, 2022, sunlight glints off the Atlantic Ocean in this photograph from taken by the crew of the International Space Station. http://www.nasa.gov/sites/default/files/thumbnails/image/iss067e005682.jpg

Astronaut Kjell Lindgren speaks to members of the media after arriving att Kennedy Space Center, ahead of SpaceX’s Crew-4 mission. http://www.nasa.gov/sites/default/files/thumbnails/image/52013454056_0aa9531a27_o.jpeg

A vehicle carrying two members of NASA’s SpaceX Crew-4 mission passed by the VAB as it returned to Launch Complex 39A. http://www.nasa.gov/sites/default/files/thumbnails/image/52017483234_50468627ed_o.jpeg

We're celebrating the Hubble Space Telescope's 32nd birthday with a stunning look at an unusual close-knit collection of five galaxies. http://www.nasa.gov/sites/default/files/thumbnails/image/hubble_32nd_hickson40.png