The first US mission to collect a sample of an asteroid and return it to
Earth in September this year is undergoing a major milestone in its
environmental testing.
Nasa's Origins, Spectral Interpretation,
Resource Identification, Security-Regolith Explorer (Osiris-Rex)
spacecraft is in thermal vacuum testing - designed to simulate the harsh
environment of space and see how the spacecraft and its instruments
operate under 'flight-like' conditions.
Osiris-Rex is scheduled to
launch in September and travel to the asteroid Bennu to collect a
sample and return it to Earth for study.
Scientists expect Bennu
may hold clues to the origin of the solar system and the source of the
water and organic molecules that may have made their way to Earth, the
US space agency said in a statement.
Osiris-Rex will be powered on
and off while being in a vacuum and exposed to extreme cold and heat
that it will see over its seven-year mission to Bennu.
Throughout the 22-day test, a team of engineers will test and monitor the spacecraft and its instruments 24 hours a day.
The
University of Arizona, Tucson leads the science team and observation
planning and processing and Lockheed Martin Space Systems in Denver is
building the spacecraft.
Osiris-Rex is the third mission in Nasa's New Frontiers Programme.
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