EUV Solar-observing satellite SOLAR-C

Exploring the Rainbow Beyond the Blue

Our Earth and other solar system objects are orbiting in the high-temperature plasma of the Sun and are ceaselessly affected via its solar wind, electromagnetic waves, and energetic particles. SOLAR-C is the next-generation solar-observing satellite which will unravel the formation mechanisms of the hot plasma and Sun's effects on the Earth and solar system ultimately seeking the origin of the solar system and life. Its on-board telescope EUVST (EUV High-throughput Spectroscopic Telescope) "explores the rainbow beyond the blue," namely, it solves the mysteries of solar atmosphere by analyzing the spectrum of the Sun's extreme UV radiation. In close collaboration with the US and European parters, ISAS/JAXA and NAOJ are now developing SOLAR-C to achieve higher sensitivity and resolution than any previous EUV spectrometer, with the targeted launch of late 2020s.


Mar. 1, 2024
SOLAR-C Project Team launched in JAXA
Mar. 1, 2024
X (twitter) has been launched
Nov. 13, 2023
Solar-C presentation in Hinode-16/IRIS-13 Joint Science Meeting
Jun. 8, 2023
International full-team meeting held in-person
Nov. 1, 2022
SOLAR-C Pre-Project Team launched in JAXA
Apr. 6, 2022
15 years of Hinode
Mar. 24, 2022
5th international virtual full-team meeting
Mar. 2-4, 2022
Solar-C presentations in ASJ 2022 Spring Annual Meeting
Feb. 11, 2022
The US satellite mission “MUSE” was selected as a NASA MIDEX
Jan. 26, 2022
4th international virtual full-team meeting
Jan. 6-7, 2022
Solar-C presentations in Space Science Symposium
Nov. 30, 2021
3rd international virtual full-team meeting
Oct. 25, 2021
Solar-C presentation in Hinode-14/IRIS-11 Joint Science Meeting
Sep. 28, 2021
Solar-C presentations in ASJ 2021 Autumn Annual Meeting
Sep. 28, 2021
JSPC nominates Solar-C to Science Council of Japan Masterplan 2023
Sep. 10, 2021
2nd international virtual full-team meeting
Jun. 23, 2021
International virtual meeting of Science Task Team
Jun. 17, 2021
International virtual science-team meeting
Jun. 6, 2021
Solar-C presentations in JpGU 2021
Jun. 2, 2021
Gallery is opened as a new page
Apr. 15, 2021
International virtual full-team meeting
Feb. 2, 2021
Solar-C presentations in COSPAR 2021
Jan. 25, 2021
Solar-C presentations in SPIE Conference
Jan. 6-7, 2021
Solar-C presentations in Space Science Symposium
Dec. 30, 2020
NASA Approves Heliophysics Missions to Explore Sun, Earth’s Aurora
Dec. 21, 2020
Solar-C presentations in JSPC Symposium
Dec. 17, 2020
Solar-C presentation in AGU Fall Meeting 2020
Oct. 29, 2020
Solar-C presentation in AAPPS-DPP2020
Oct. 14, 2020
International virtual meeting
Oct. 8, 2020
Studying the Sun as a distant star: contributions to investigations of massive flares and exoplanet habitability
Aug. 14, 2020
International virtual meeting
Jul. 31, 2020
The first physics-based method that can predict imminent large solar flares
Jul. 31, 2020
International virtual meeting
Jul. 12-16, 2020
Solar-C presentation in JpGU-AGU 2020
Jul. 10, 2020
International virtual meeting
Jun. 21, 2020
Picked up by Twitter and Facebook of Japanese government
Jun. 8, 2020
Selected at ISAS/JAXA as 4th Competitively-chosen Middle-class mission
Jun. 4-5, 2020
International virtual meeting
Apr. 6-8, 2020
International virtual meeting
Feb. 3-7, 2020
SOLAR-C presentation in APSPM 2020
Nov. 21-22, 2019
International face-to-face meeting in NASA/GSFC
Nov. 18, 2019
NASA Selects Proposals to Advance Understanding of Space Weather
Nov. 6, 2019
SOLAR-C presentation in Solar Orbiter SWT meeting
Nov. 6, 2019
SOLAR-C face-to-face meeting has been held
Oct. 21, 2019
Website (English edition) is opened
Oct. 9, 2019
Website (Japanese edition) is renewed

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How are the hot corona and the solar wind created? When and how do the solar flares occur?


EUVST observes the Sun's different temperatures, simultaneously, seamlessly, with high temporal and spatial resolution.


SOLAR-C is a mission of international cooperation led by Japan with partners in the US and Europe.


SOLAR-C is under study with the earliest target launch in late-2020s.


Gallery of CGs, a logotype, and movies for SOLAR-C.

For Researchers

Information about meetings and symposia, Links.