Two astronomers tried to answer this question during a live debate in 1920. At 8:15 pm on Monday, April 26, 1920, two men took to the stage of the Baird Auditorium in the Smithsonian’s National Museum ...

Chat with astronomer Rodolfo Montez Jr. Ask questions about the beautiful death throes of Sun-like stars and the ultimate fate of the Sun.

The beautiful, but skewed, spiral galaxy NGC 1961 is about 190 million light-years from Earth—in the constellation Camelopardalis. During Hubble’s era, astronomers debated whether such formations were ...

Visit us in Washington, DC and Chantilly, VA to explore hundreds of the world’s most significant objects in aviation and space history. Free timed-entry passes are required for the Museum in DC. This ...

Visit us in Washington, DC and Chantilly, VA to explore hundreds of the world’s most significant objects in aviation and space history. Free timed-entry passes are required for the Museum in DC.

Composite showing Col. Stapp during rocket sled test at Holloman AFB, NM. Test to study effects of bailout at high altitude and supersonic speeds. Photos 1-3 taken during acceleration phase: force = ...

Visit us in Washington, DC and Chantilly, VA to explore hundreds of the world’s most significant objects in aviation and space history. Free timed-entry passes are required for the Museum in DC.

Visit us in Washington, DC and Chantilly, VA to explore hundreds of the world’s most significant objects in aviation and space history. Free timed-entry passes are required for the Museum in DC.

Visit us in Washington, DC and Chantilly, VA to explore hundreds of the world’s most significant objects in aviation and space history. Free timed-entry passes are required for the Museum in DC.

Wildfire season is getting longer, according to the US Forest Service, making firefighting a bigger, more vital operation each year. In this episode, Emily, Matt, and Nick take a look at how the pros ...

Joseph Kittinger traveled to the edge of space—and jumped. On August 16, 1960, Joe Kittinger went for a balloon ride. Sitting inside an open gondola suspended from an enormous helium-filled envelope, ...

Deke Slayton demonstrates the modified LiOH canister to Mission Control during the Apollo 13 mission. (NASA image S70-35013) Using a clever solution of a plastic bag, cardstock, a spacesuit hose, and ...