[KongchangAI]
Unverified50% confidenceFactExact time

Helium-3 and helium-4 are the two stable isotopes of helium; a helium-4 nucleus contains 2 protons and 2 neutrons, while helium-3 contains 2 protons and 1 neutron.

1
Sources
50%
Confidence
Long-term
Relevance
10/12/2026
First Seen

Sources

Helium-3: From Nuclear Bombs to Dilution Refrigerators — How the Most Expensive Substance Powers Frontier Science

Related Entities

Helium-3conceptHelium-4concept

Related Claims

UnverifiedHelium-3 is an extremely scarce helium isotope, with an estimated approximately 1 million tonnes deposited in lunar soil through solar wind.71% similar

Cite This Claim

Stable URI
https://kongchang.com/claim/1011611
API
curl https://kongchang.com/api/v1/knowledge/claims/1011611
MCP
get_claim(id=1011611)