Deneen Lewis: Hubble Electrical Engineer

  • Released Monday, July 26th, 2021
  • Updated Wednesday, May 3rd, 2023 at 1:44PM

Deneen started working on the Hubble project as an electrical engineer in her first job out of school. She has been involved in three of the servicing missions to repair and upgrade Hubble.

During the final space shuttle visit to Hubble, Servicing Mission 4 in 2009, she developed the bulk of the “command plan,” the carefully ordered procedure for dealing with Hubble’s electrical power system.

She helped develop the procedures and computer code to send the commands that controlled Hubble’s batteries, as well as the commands that turned on and off the relays that allow power to flow to the batteries and other electronics.

This video features Deneen going over her unique bond with the Hubble Space Telescope.

For more information about the Hubble Space Telescope and its images, visit

Credit: NASA's Goddard Space Flight Center
Grace Weikert: Producer / Editor

Music Credits:
“Luminance” by Joshua Benjamin Pacey [PRS] via Atmosphere Music Ltd. [PRS], and Universal Production Music.


Please give credit for this item to:
NASA's Goddard Space Flight Center


This visualization is related to the following missions: