Gamma-ray burst energy
Claim in the list: Gamma-ray bursts release more energy in 10 seconds than the Sun does in 10 billion years.
Verification: This is a common approximate comparison cited by NASA for the most energetic gamma-ray bursts. It generally refers to emitted electromagnetic energy, often reported as an isotropic-equivalent estimate; actual bursts are beamed into narrow jets, so total energy depends on geometry and burst type. Durations also vary: short bursts last less than about two seconds, while long bursts last more than two seconds, from seconds to minutes. Not every burst has the same energy or lasts exactly 10 seconds.
Conclusion: Some gamma-ray bursts can emit in seconds energy comparable to the Sun’s electromagnetic output over its lifetime, but this is a scale comparison, not a universal property of every burst.