Suzanne K. Mast

President Biden's second dog, Major Biden, is the first presidential pet in U.S. history to go from shelter dog to White House companion.

See images of the 59th inauguration, at which Joseph R. Biden and Kamala D. Harris became the new president and vice president of the United States.

The U.S. presented its pavilion — including moon rocks, a Mars rover and a SpaceX Falcon 9 rocket replica — for Dubai's Expo 2020.

Since November 2, 2000, the International Space Station has hosted researchers from 108 countries performing advanced experiments on life in space.

NASA interns have collected air pollution data from home during quarantines for COVID-19. See how interns have continued learning while social distancing.

On July 20, we mark the day in 1969 that U.S. astronauts Neil Armstrong and Buzz Aldrin became the first humans to set foot on the moon's surface.

A chance meeting between two NASA scientists led to the development of a ventilator prototype to help patients suffering from COVID-19.

How long can the virus that causes COVID-19 survive on different surfaces? This online tool can give an estimate based on room temperature and humidity.

NASA and the European Space Agency mark the 30th anniversary of the Hubble Space Telescope with this amazing photograph from a nearby galaxy.