On August 1, the National Air and Space Museum will join with the United States Marine Corps and the National Museum of the Marine Corps to bid adieu to one of the most important American military aircraft of the past 50 years, the Boeing CH-46 Sea Knight, or “Phrog,” as it is almost universally known among Marines.

As we await the exciting results of New Horizons’ flyby of Pluto on July 14, it is all too easy to think that this mission was inevitable: the capstone to NASA’s spectacular exploration of all the planets (and ex-planets) of the solar system since the 1960s. Yet, it proved extraordinarily difficult to sustain a Pluto project.

Next week marks the 40th anniversary of an important moment in space history, when astronauts and cosmonauts greeted each other warmly in their docked Apollo and Soyuz spacecraft while orbiting above the Earth.

Much of the Moon is blanketed by a thick layer of dust, built up from the rocky surface over billions of years by the impacts of small meteorites. Hidden beneath the dust is evidence of ancient geologic activity – great volcanic eruptions, tectonic shifts in the crust, and vast deposits of once-molten material hurled outward during the formation of the giant impact basins.

In this four-part series, curators Russ Lee and Evelyn Crellin take an in-depth look at the Lippisch DM 1, an experimental German glider. At the conclusion of Part 3, the glider was tested in the National Advisory Committee for Aeronautics (NACA) Full-Scale Wind Tunnel. In this final post, Russ and Evelyn connect those early tests with the world's first delta wing aircraft.  We have found no written confirmation that Convair incorporated the NACA data from the DM 1 directly into their groundbreaking work to design and build the first jet-propelled delta wing aircraft.

"Buck...Rogers...in the twenty-fifth CEN-TURYYY!" This enthusiastic refrain from a deep-voiced announcer is how the popular 1930s radio show featuring space hero Buck Rogers began. It was followed by the roar of a spaceship blasting off, simulated by the sound of an air conditioning vent. Many of you have probably never heard of Buck Rogers, but he was a household name in the 1930s and ‘40s. Rogers was the very first science fiction comic strip hero. The character, at first named Anthony Rogers, was introduced in the first science fiction magazine, Amazing Stories, in August 1928. In a story titled, Armageddon 2419 A.D., written by Philip Nowlan, Rogers was a 29-year-old World War I veteran who took a job inspecting mines for radioactive gases.

The Scene: A new wind tunnel, the NACA Full Scale Tunnel at the NACA Langley Memorial Aeronautical Laboratory, Hampton, Virginia The Time: May 27, 1931 The Action: A Navy Vought O3U-1 “Corsair II” –the whole airplane—is mounted in the wind tunnel.

In this four-part series, curators Russ Lee and Evelyn Crellin take an in-depth look at the Lippisch DM 1, an experimental German glider. At the conclusion of Part 2, U.S. Army General George S. Patton ordered the students to resume construction of the glider at the Prien Airport. A number of American visitors arrived to witness the construction of the DM 1, including the famous American pioneer of aerodynamics Walter Stuart Diehl.

In April, the  Smithsonian X 3D team pointed their lasers and scanners at the Bell X-1, the same iconic aircraft that shot Capt. Charles 'Chuck' Yeager across the pristine skies of the Mojave Desert to a record-breaking speed. On October 14, 1947,  in the Bell X-1, Yeager became the first pilot to fly faster than sound. Now, we can all get as close to the Bell X-1 as Yeager himself with the recently released 3D model of the exterior of the aircraft. In honor of the new 3D model and that resounding flight, we've compiled five facts to help you begin your exploration of the aircraft and that key moment in history. We also reached out to Smithsonian X 3D team to find out exactly how one goes about capturing a 3D model. But first, our five facts: 1. To conserve fuel, the X-1 was flown up to 7,620 meters (25,000 ft) attached to the bomb bay of a modified Boeing B-29 bomber and then dropped.

In this four-part series, curators Russ Lee and Evelyn Crellin take an in-depth look at the Lippisch DM 1, an experimental German glider. At the conclusion of Part 1, construction of the glider had begun in August 1944 by students of the Flugtechnische Fachgruppe (FFG). Construction of the experimental glider was derailed dramatically on September 11 and 12, 1944, when Allied bombers struck Darmstadt, including the building that housed the FFG D 33 project.