Science & Technology — June 6, 2026

Small nuclear reactor reaches criticality in first U.S. test. Antares Energy’s modular reactor achieved a sustained nuclear reaction in Idaho, a milestone for the technology that promises cheaper, faster-to-build power plants.

Ars Technica · Read more ↗

Scientists edit human embryo genomes with new precision technique. Researchers used base editing to correct disease-causing mutations in lab-grown embryos, but critics worry it could accelerate premature clinical trials.

Nature · Read more ↗

Space station air leak forces astronauts into emergency shelter. Crew briefly retreated to SpaceX Dragon capsule Friday while Russian cosmonauts attempted repairs on a persistent leak in their module.

Ars Technica · Read more ↗

SpaceX IPO values company at $1.77 trillion. The rocket company will sell shares at $135 each, making it the seventh-most valuable U.S. company behind tech giants and oil majors.

Space.com · Read more ↗

Second flesh-eating screwworm fly confirmed in Texas. USDA found another case of the livestock parasite, which was eradicated from the U.S. in 1966 but recently returned from Central America.

The Hill · Read more ↗