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SOLAR SCIENCE
New Sun Missions to Help NASA Better Understand Earth-Sun Environment
by Agency Writes for NASA News
Washington DC (SPX) Feb 11, 2022

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NASA has selected two science missions - the Multi-slit Solar Explorer (MUSE) and HelioSwarm - to help improve our understanding of the dynamics of the Sun, the Sun-Earth connection, and the constantly changing space environment. These missions will provide deeper insights into our universe and offer critical information to help protect astronauts, satellites, and communications signals such as GPS.

"MUSE and HelioSwarm will provide new and deeper insight into the solar atmosphere and space weather," said Thomas Zurbuchen, associate administrator for science at NASA Headquarters in Washington. "These missions not only extend the science of our other heliophysics missions-they also provide a unique perspective and a novel approach to understanding the mysteries of our star."

MUSE
The MUSE mission will help scientists understand the forces driving the heating of the Sun's corona and the eruptions in that outermost region that are at the foundation of space weather. The mission will offer deeper insight into the physics of the solar atmosphere by using a powerful instrument known as a multi-slit spectrometer to observe the Sun's extreme ultraviolet radiation and obtain the highest resolution images ever captured of the solar transition region and the corona.

The mission will also provide complementary observations from heliophysics research such as the Extreme UltraViolet Spectroscopic Telescope and ground-based observatories.

"MUSE will help us fill crucial gaps in knowledge pertaining to the Sun-Earth connection," said Nicola Fox, director of the Heliophysics Division at NASA Headquarters. "It will provide more insight into space weather and complements a host of other missions within the heliophysics mission fleet."

The primary goal of the MUSE mission is to investigate the causes of coronal heating and instability, such as flares and coronal mass ejections, and gain insight into the basic plasma properties of the corona. MUSE will obtain high-resolution images of the evolution of solar flare ribbons in a field of view focused on a large, active region on the Sun.

The principal investigator for the MUSE mission is Bart DePontieu of the Lockheed Martin Advanced Technology Center (LMATC) of Palo Alto, California. This mission has a budget of $192 million. LMATC will provide project management.

HelioSwarm
The HelioSwarm mission is a constellation or "swarm" of nine spacecraft that will capture the first multiscale in-space measurements of fluctuations in the magnetic field and motions of the solar wind known as solar wind turbulence. The Sun's outermost atmospheric layer, the heliosphere, encompasses an enormous region of the solar system. Solar winds spread through the heliosphere, and their interactions with planetary magnetospheres and disruptions such as coronal mass ejections affect their turbulence.

Studying solar wind turbulence across large areas requires plasma measurements taken simultaneously from different points in space. HelioSwarm consists of one hub spacecraft and eight co-orbiting small satellites that range in distance from each other and the hub spacecraft. The hub spacecraft will maintain radio contact with each small satellite. All radio contact between the swarm and Earth will be conducted through the hub spacecraft and the NASA Deep Space Network of spacecraft communication antennas.

"The technical innovation of HelioSwarm's small satellites operating together as a constellation provides the unique ability to investigate turbulence and its evolution in the solar wind," said Peg Luce, deputy director of the Heliophysics Division.

The HelioSwarm mission's principal investigator is Harlan Spence from the University of New Hampshire. The mission's budget is $250 million. NASA's Ames Research Center in Silicon Valley, California, will provide project management.


Related Links
Heliophysics Science at NASA
Solar Science News at SpaceDaily


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SOLAR SCIENCE
Introducing ESA Vigil: Earth's devoted solar defender
Paris (ESA) Feb 11, 2022
It's the first mission of its kind, set to monitor our active and unpredictable Sun and help protect us from its violent outbursts - and it has a new name. Once known as "Lagrange," ESA's upcoming space weather mission needed a new name that would reflect its vital role: helping to protect Earth's infrastructure, satellites, inhabitants and space explorers from unpredictable but violent solar events like solar flares and 'coronal mass ejections'. With 5422 submissions from across Europe and ... read more

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