Science / Space
Japanese researchers outline next steps as PRIMA telescope advances
The proposed far-infrared observatory has entered preliminary design, but Japanese participation and implementation reviews remain ahead.
Status: source-checked.
Japanese universities and research institutions said Nov. 6 that NASA’s PRIMA far-infrared telescope mission has moved into preliminary design and technology development. The transition to Phase B also advances domestic reviews of Japan’s possible participation, according to their joint announcement. It does not establish that a Japanese contribution has received final approval.
As background, organized Japanese work on the mission began in June 2023 and became a working group at the Japan Aerospace Exploration Agency’s Institute of Space and Astronautical Science in December 2024. The institutions said researchers have since studied scientific and technical contributions and joined broader mission science activities.
PRIMA is designed to investigate planet formation, the joint evolution of galaxies and their central black holes, and the buildup of dust and heavy elements. Far-infrared light is largely blocked by Earth’s atmosphere, the announcement explains. Dust that hides young stars in visible light reradiates absorbed energy in the far-infrared, providing a different way to study those regions.
The design calls for a 1.8-meter telescope cooled to about 4.5 kelvins to reduce its own infrared emission. An imager would map dust emission and measure polarization, while a spectrometer would trace gas and heavy elements. Those are planned capabilities, not observations already made by the mission.
NASA is targeting a 2033 launch and a five-year mission, according to the institutions. PRIMA must still pass a confirmation review before implementation in Phase C. RIKEN said its participating researchers plan work on protoplanetary disk masses and snowline locations using molecular emission measurements if the mission proceeds.
What we know / what we don't
What we know
- The proposed far-infrared observatory has entered preliminary design, but Japanese participation and implementation reviews remain ahead.
What we don't know
- Japan’s participation is still under review; the launch target and instrument capabilities are prospective.
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