Two minutes is the longest you could survive without a space suit on the other planets in our solar system. On Mars and Mercury, you’d stay alive for as long as you can hold your breath (about 2 min), and Venus is so hot that you’d instantly be vaporized. But just like Jupiter, Saturn, and Neptune, Uranus is a gas giant with no surface to land on – so you’d descend forever into the gassy atmosphere until you’re crushed by the pressure, which takes less than a second to kill you. Source Source 2