The coldest known place in the universe is the outflow of a dying star, chilled to one degree above absolute zero — colder than the afterglow of the Big Bang

30/06/2026 · Article 🆕

The Boomerang Nebula, a Sun-like star in its death throes about 5,000 light-years away, has cooled itself below the leftover heat of the Big Bang. The mechanism is the same one that runs your refrigerator.