NASA's PRIMA Mission Advances to Next Development Phase
NASA announced that the PRIMA far-infrared space telescope will move into Phase B development, becoming the first in the new Probe Explorers mission class. The telescope, with a 5.9-foot mirror, will study the formation of planets, stars, and black holes, and is targeted for launch in 2033. The project cost is capped at $1.2 billion, pending confirmation review.
PRIMA's far-infrared capabilities will complement existing observatories, filling a wavelength gap between the James Webb Space Telescope and ground-based radio arrays. The mission's international scope includes contributions from seven space agencies across Europe, Asia, and North America, with JPL leading overall management.
The telescope's 5.9-foot mirror will enable deep surveys of cosmic dust and heavy elements, addressing questions about planetary system origins and galactic evolution. Its selection follows the 2020 Decadal Survey's recommendation for a new Probe Explorers class, designed to deliver mid-sized missions at lower cost than flagship observatories.
PRIMA's development could reshape how astronomers study the universe's obscured regions, potentially yielding discoveries about planetary formation and black hole growth that inform future research priorities. The mission's moderate cost and international partnerships may also demonstrate a sustainable model for space science, allowing more frequent mid-sized missions. Society could benefit from advances in infrared technology and deepened understanding of cosmic origins, though tangible impacts will likely emerge gradually as data returns in the 2030s.