Star charts show the arrangement of stars in the sky, in a style that can be scientific, artistic or both, depending on the intended use.

Reference article: Facts about NASA's Armstrong Flight Research Center.

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

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

NASA's Kepler Space Telescope was a revolutionary space telescope dedicated to finding planets outside our solar system.