MEBRO

FACT CHECK #ZLNARV4X

06/14/26 · 10:00 AM UTC · 11 SOURCES

“The third stage of a thermonuclear weapon achieves extreme temperatures, reaching 100 million degrees Celsius, which is hotter than the core of our sun.”

TRUE ✓

WHAT WE FOUND

Thermonuclear weapons utilize nuclear fusion to achieve temperatures that significantly exceed those found in the core of the sun. While the sun maintains a central temperature of approximately 15 million degrees Celsius, it relies on immense gravitational pressure to facilitate hydrogen fusion at that level. In contrast, terrestrial fusion in a weapon must overcome the electrostatic repulsion between atomic nuclei without such pressure, requiring temperatures of at least 100 million degrees Celsius. In high yield multi stage thermonuclear designs, such as the three stage B41 bomb or the Soviet Tsar Bomba, the tertiary stage is ignited by the preceding fusion reaction and reaches these extreme thermal levels. Scientific data from the Department of Energy and Lawrence Livermore National Laboratory confirm that peak temperatures during the detonation of these devices can briefly reach between 100 million and 350 million degrees Celsius, which is nearly 20 times hotter than the solar core.