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Science Investigations |
Science Investigations

There are 2 missions being sent out as of now to study the
space weather and the effects it will have on human life. One of them
is the MMS (Magnetospheric MultiScale ) led by National Aeronautics and
Space Administration(NASA) and the other is CLUSTER led by European
Space Agency(ESA).The main mission that will be talked about on this
site is the Magnetospheric MultiScale(MMS) Mission led by NASA
(NAtional Aeronautics and Space Adminstration.
About MMS
The Magnetospheric MultiScale (MMS) Instrument Suite team of
Southwest Research Institute (SRI) was selected by NASA to work on the
MMS Project in mission formulation. For this mission, SwRI is
partnering with the University of New Hampshire, the Goddard Space
Flight Center, the Johns Hopkins University Applied Physics Laboratory
and the Austrian Academy of Sciences. The team from CU-Boulder's
Laboratory for Atmospheric and Space Physics will be part of NASA's
Magnetospheric MultiScale mission as well. A number of U.S. and
international scientists from other universities and institutions are
also participating. The science payload and analysis of its data are
expected to cost $140 million. Launch of the $700 million mission is
scheduled for July 2013,and will employ four identically instrumented
spacecraft to make coordinated high-resolution observations of
fundamental plasma physical processes in the Earth's magnetosphere, the
region in space closest to the planet. The magnetosphere is the region
above the Earth's atmosphere encompassing the planet's magnetic field,
which frequently is battered by violent space weather disruptive to
spacecraft and Earth communications. The MMS mission will begin with
the simultaneous launch of four disk-shaped satellites resembling
"flying porcupines," each about three feet high and seven feet in
diameter with extensive instrumentation and protruding antennas. MMS
results will directly contribute to understanding the sun and its
effects on Earth, the solar system and the space environment human
explorers will experience," said NASA's Deputy Associate Administrator
of the Science Mission Directorate Ghassem Asrar. (NASA).

Objectives of MMS
MMS will determine the small-scale basic plasma processes which
transport, accelerate and energize plasmas in thin boundary and current
layers – and which control the structure and dynamics of the Earth's
magnetosphere. It will also for the first time measure the 3D structure
and dynamics of the key magnetospheric boundary regions, from the
subsolar magnetopause to the distant tail. It will also pave the way
for future Constellation-type missions.
Smart (Studying Magnetospheric Acceleration, Reconnection
and Turbulence
As you know, SwRI (Southwest Research Institute) is leading
NASA's MMS mission. They have called their research and mission SMART
which stands for Studying Magnetospheric Acceleration, Reconnection,
and Turbulence. Researchers need a global perspective to understand the
complex processes that transport, accelerate and energize plasmas in
the magnetosphere. The first truly global measurements began with the
2000 launch of the Imager for Magnetopause-to-Aurora Global Exploration
(IMAGE) spacecraft, also led by SwRI. "MMS will complement the IMAGE
concept by providing multi-point measurements in three dimensions,
using updated technologies to probe the small-scale processes that
drive the global dynamics," says Burch.The most important of these
processes is magnetic reconnection, which explosively converts magnetic
field energy to heat and kinetic energy of charged particles. At the
Earth, magnetic reconnection energizes the magnetosphere, ultimately
causing the aurora and magnetic storms. At the Sun, it causes solar
flares and other energetic outbursts. Throughout the universe, it is
one of the processes that accelerates high-energy cosmic rays.
The SMART experiment on MMS will study the physical processes that
occur when plasma streaming from the sun triggers outbursts like
electromagnetic storms that can affect orbiting spacecraft as well as
power grids on Earth. The SMART experiment will use the sophisticated
antennas to gather data on the processes occurring in the electrified
plasma, which will be sent to LASP's Space Technology Building,
archived and distributed to scientists around the world, including
researchers at CU-Boulder. LASP (CU-Boulder's Laboratory for
Atmospheric and Space Physics) will help design, fabricate and test
components for the SMART experiment. According to NASA officials at the
Goddard Space Flight Center, the MMS mission is expected to help
scientists better understand the effects of the sun on Earth, the solar
system and the space environment frequented by astronauts.(NASA)
CREDIT IS PROVIDED TO NASA'S MMS WEBSITE AT:http://stp.gsfc.nasa.gov/missions/mms/mms.htm
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