Magnetospheric Multiscale, or MMS, mission engineers, seen here in white cleanroom suits, integrate the fourth and final instrument deck onto the thrust tube, which houses the propulsion module, officially making it an observatory. This clean room was designed and built for MMS to house all four spacecraft at once.
Magnetospheric Multiscale, or MMS, mission engineers, seen here in white cleanroom suits, integrate the fourth and final instrument deck onto the thrust tube, which houses the propulsion module, officially making it an observatory. This clean room was designed and built for MMS to house all four spacecraft at once: Two additional observatories appear in the background.
Credit: NASA
View associated news item at https://www.nasa.gov/mission_pages/sunearth/news/mms-fourth.html