Best of 2025

The blog posts Hacker News loved most in 2025. 220 posts.

Science & Space
75

New records on Wendelstein 7-X

Wendelstein 7-X—the leading fusion device of the stellarator type—achieved several new performance milestones during its latest run of experiments. Among them is a world record for triple product, the value that measures how close a fusion device is to generating net energy across the plasma.