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Articles by: Steve Fentress

A rocket engine fueled by liquid methane and liquid oxygen fires in a test at Glenn Research Center's Altitude Combustion Stand.

NASA's Glenn Research Center: Incubator of technologies for flight

By Steve Fentress

With supersonic wind tunnels, giant vacuum chambers, engine test stands and a deep shaft for dropping test packages, NASA's Glenn Research Center puts air and space hardware to the test.

The main mirror for the James Webb Space Telescope is tested in the giant clean room at NASA's Goddard Space Flight Center.

NASA's Goddard Space Flight Center: Exploring Earth and space by remote control

By Steve Fentress

The James Webb Space Telescope, WFIRST, Hubble, and hundreds of other missions sprang from or have close connections to NASA's Goddard Space Flight Center.

Yerkes Observatory

Yerkes Observatory: Home of Largest Refracting Telescope

By Steve Fentress

The Yerkes Observatory is more than 120 years old and is most known for contributing to discoveries about stellar motion and cartography.