Inside the Payload Hazardous Servicing Facility at NASA's Kennedy Space Center in Florida, engineers and technicians performed a spin test of the Mars Atmosphere and Volatile Evolution (MAVEN) spacecraft. The operation is designed to verify that MAVEN is properly balanced as it spins during the initial mission activities.
A NASA spacecraft that will examine the upper atmosphere of Mars in unprecedented detail is undergoing final preparations for a scheduled launch at 1:28 p.m. EST on Monday, November 18, from Cape Canaveral Air Force Station in Florida.
MAVEN will examine specific processes on Mars that led to the loss of much of its atmosphere. Data and analysis could tell planetary scientists the history of climate change on the Red Planet and provide further information on the history of planetary habitability.
"The MAVEN mission is a significant step toward unraveling the planetary puzzle about Mars' past and present environments," said John Grunsfeld from NASA's Science Mission Directorate in Washington. "The knowledge we gain will build on past and current missions examining Mars and will help inform future missions to send humans to Mars."
The 5,410-pound spacecraft will launch aboard a United Launch Alliance Atlas V 401 rocket on a 10-month journey to Mars. After arriving at Mars in September 2014, MAVEN will settle into its elliptical science orbit.
Over the course of its one-Earth-year primary mission, MAVEN will observe all of Mars' latitudes. Altitudes will range from 93 miles (150 kilometers) to more than 3,800 miles (6,115 kilometers). During the primary mission, MAVEN will execute five deep dip maneuvers, descending to an altitude of 78 miles (126 kilometers). This marks the lower boundary of the planet's upper atmosphere.
"Launch is an important event, but it's only a step along the way to getting the science measurements," said Bruce Jakosky from the University of Colorado, Boulder's Laboratory for Atmospheric and Space Physics (CU/LASP). "We're excited about the science we'll be doing, and are anxious now to get to Mars."
The MAVEN spacecraft will carry three instrument suites. The Particles and Fields Package, provided by the University of California at Berkeley with support from CU/LASP and NASA's Goddard Space Flight Center in Greenbelt, Maryland, contains six instruments to characterize the solar wind and the ionosphere of Mars. The Remote Sensing Package, built by CU/LASP, will determine global characteristics of the upper atmosphere and ionosphere. The Neutral Gas and Ion Mass Spectrometer, built by Goddard, will measure the composition of Mars’ upper atmosphere.
"When we proposed and were selected to develop MAVEN back in 2008, we set our sights on November 18, 2013, as our first launch opportunity," said Dave Mitchell from Goddard. "Now we are poised to launch on that very day. That's quite an accomplishment by the team."