The jitters result mainly from oscillations of Hubble's electricity-providing solar panels.
The jitters, however, interfere primarily with Hubble's ability to track guide stars -- extraterrestrial "signposts" that help orient the telescope for observations.
NASA officials now plan a "dynamics test" in which engineers will give the telescope's position-holding "reaction wheels" a precisely specified nudge and then measure the jitter response, Nurre says.
The Jitters Cafe will serve gourmet coffee as well as fountain drinks, smoothies, sandwiches, salads and pastries.
The addition of the Jitters cafe provides an important element to the House2Home concept, as we continue our efforts to create an ideal shopping experience for our customers," said Henry Ragin, vice president, director of merchandising for House2Home.