Part 4/12:
Moreover, Jupiter's environment is marked by extreme conditions. Its atmosphere predominantly consists of helium and hydrogen, with no solid surface like terrestrial planets. Instead, it features thick clouds and swirling storms, including the famous Great Red Spot. As a spacecraft descends, the atmospheric pressure and temperature increase dramatically, with conditions becoming so severe that probes, like NASA’s Galileo, disintegrate at depths of around 75 miles beneath the cloud tops—where pressures are over 100 times that of Earth's sea level and temperatures exceed those on the Sun's surface.