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Science & Engineering

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Wed, August 3 2016

On This Day: First Spacewalk Under a Shuttle

On this day in 2005, Discovery astronaut Stephen K. Robinson became the first person to do a spacewalk underneath a space shuttle orbiter.

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Space Shuttle Discovery's Underside
Fri, July 15 2016

Ten Artifacts That Transformed the World

“What is your favorite artifact?” When you work at a museum that is the question people always ask you. Most of my museum colleagues say it’s impossible to pick just one. I agree.

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Lockheed SR-71 Blackbird
Wed, July 13 2016

Hand-building Radar Systems

Radar instruments play an important role in our study of Earth’s nearest neighbors, such as the Moon, Venus, and Mars. Radar can provide a range of information regarding the materials that make up the surface of a planet and offer a unique perspective on the underlying structure. To get the most out of our research it is important to have a fundamental understanding of the hardware that makes up a radar instrument. What better way to achieve this than build our own.

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Geophysicist Bruce Campbell with Hand-Built Radar
Wed, March 23 2016

Women Who Changed the Universe and How We Portray Them

One of the many threads in our Explore the Universe gallery is the changing role of women in astronomy over the past two centuries. In the present gallery, opened in September 2001, we examine how the role of women as astronomers has changed over time from assisting family members to leaders of research teams.

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Vera Rubin at the Flagstaff Telescope
Wed, March 16 2016

Robert Goddard and the First Liquid-Propellant Rocket

Ninety years ago today, on March 16, 1926, Robert H. Goddard (1882-1945) launched the world’s first liquid-propellant rocket. His rickety contraption, with its combustion chamber and nozzle on top, burned for 20 seconds before consuming enough liquid oxygen and gasoline to lift itself off the launch rack. The rocket took off from a snowy field outside Worcester, Massachusetts, reaching a height of about 12.5 meters (41 feet) and a distance of 56 meters (184 feet). It was smashed on impact. Goddard, his wife Esther, and a couple of assistants from Clark University, where he was a physics professor, were the only witnesses.

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Goddard 1926 Rocket
Fri, March 11 2016

The "Rope Mother" Margaret Hamilton

A few years after graduating from Earlham College with a BA in Mathematics, Margaret Hamilton soon found herself in charge of software development and production for the Apollo missions to the Moon at the MIT Instrumentation Laboratory. Her work was critical to the success of the six voyages to the Moon between 1969 and 1972. In a male-dominated field, Hamilton became known as the “Rope Mother,” which was an apt description for her role and referred to the unusual way that computer programs were stored on the Apollo Guidance Computers.

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Margaret Hamilton
Wed, February 17 2016

Inventing Underwater Training for Walking in Space

Training underwater for extravehicular activity (EVA)—popularly known as spacewalking—is now critical for preparing astronauts to work in weightlessness. But when cosmonauts and astronauts first ventured outside their spacecraft 50 years ago, in 1965 and 1966, they had no such training. Spacewalking did not appear difficult, nor did space program officials think that underwater work was needed. In the United States, it took Eugene Cernan’s June 1966 Gemini IX EVA to change attitudes. Fighting against his pressurized suit, while trying to do work without adequate handholds and footholds, Cernan quickly became exhausted and overheated. Only afterward did NASA Manned Spacecraft Center in Houston reach out to a tiny company outside Baltimore: Environmental Research Associates, Inc. (ERA). Funded by another agency center, it had been experimenting with EVA simulation in a rented school pool on nights, holidays, and weekends. That project became the foundation for Houston’s first underwater training facility.

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G. Samuel Mattingly in the Orbital Workshop mockup
Fri, November 27 2015

Comparing Alan Eustace’s Spacesuit with Neil Armstrong’s

Our conservation team had the pleasure of hosting Alan Eustace, former Google executive, engineer, and stratospheric explorer, this month in the Emil Buehler Conservation Laboratory. Eustace and his StratEx team are well known for their three world records including one for the highest altitude jump at 41,422 meters (135,899 feet) in 2014. The adventurer was in town giving a lecture about his historic jump and to donate to the Museum the suit, life support, and balloon equipment module he used during the jump.

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Alan Eustace Visits the Conservation Labratory
Sat, October 17 2015

Octave Chanute and the Richard Anemometer

Many people, if not most, have never heard of Octave Chanute or know what an anemometer is, but the man and the instrument both played an important part in Orville and Wilbur Wright’s aeronautical experiments. First, some background on Chanute. Octave Chanute was a Paris-born civil engineer in the United States who played a significant role in the burgeoning field of heavier-than-air flight in the late nineteenth century.

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Richard Anemometer
Wed, October 14 2015

Apollo Guidance Computer and the First Silicon Chips

As the Apollo program took form in the early 1960s, NASA engineers always kept the safety of their astronauts at the fore in light of the enormous risks they knew were inherent in the goal of landing on the Moon and returning safely. Wherever possible, they designed backup systems so that if a primary system failed the crew would still have the means to return home safely. Sometimes creating a backup was not always practical. For example, the Service Module’s engine needed to fire while the crew was behind the Moon to place them in a trajectory that would return them to Earth. There was no practical backup if the engine failed. But even in that instance a plan was worked out to use the Lunar Module’s (LM) engine as a backup. D

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Inside of a Silicon Chip

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