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  JAXA, NASA Solar-C EUVST solar telescope

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Author Topic:   JAXA, NASA Solar-C EUVST solar telescope
Robert Pearlman
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NASA release
NASA Approves Heliophysics Mission to Explore Sun

NASA has approved the Extreme Ultraviolet High-Throughput Spectroscopic Telescope Epsilon Mission, or EUVST, to help understand the Sun and Earth as an interconnected system.

Understanding the physics that drive the solar wind and solar explosions – including solar flares and coronal mass ejections – could one day help scientists predict these events, which can impact human technology and explorers in space.

The Japan Aerospace Exploration Agency (JAXA) leads the Extreme Ultraviolet High-Throughput Spectroscopic Telescope (EUVST) Epsilon Mission (Solar-C EUVST Mission), along with other international partners. Targeted for launch in 2026, EUVST is a solar telescope that will study how the solar atmosphere releases solar wind and drives eruptions of solar material. These phenomena propagate out from the Sun and influence the space radiation environment throughout the solar system.

NASA's hardware contributions to the mission include an intensified UV detector and support electronics, spectrograph components, a guide telescope, software, and a slit-jaw imaging system to provide context for the spectrographic measurement. The budget for NASA contributions to EUVST is $55 million. The principal investigator for the NASA contribution to EUVST is Harry Warren at the U.S. Naval Research Laboratory in Washington.

"In addition to my enthusiasm at selecting a pioneering multi-point observatory focused on the auroral electrojets, I am particularly excited to follow up the success of the Yohkoh and Hinode solar science missions with another international collaboration with JAXA and other European partners on EUVST," said Thomas Zurbuchen, associate administrator for science at NASA Headquarters in Washington.

The EUVST mission addresses the recommendations of a July 2017 final report delivered by the multi-agency Next Generation Solar Physics Mission Science Objectives Team. EUVST will take comprehensive UV spectroscopy measurements of the solar atmosphere at the highest level of detail to date, which will allow scientists to tease out how different magnetic and plasma processes drive coronal heating and energy release.

"We're excited to work with our international partners to answer some of our fundamental questions about the Sun," said Nicky Fox, Heliophysics Division director at NASA Headquarters in Washington. "EUVST's observations will complement our current missions to give us new insight into our star."

Funding for this mission of opportunity comes from the Heliophysics Explorers Program, managed by the Explorers Program Office at NASA's Goddard Space Flight Center in Greenbelt, Maryland.

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