How the Universe Works: Uranus & Neptune Rise of the Ice Giants ep.4 2018
The ice giants Uranus and Neptune are mysterious, icy worlds at the edge of the solar system; new discoveries reveal that these strange planets may have helped start life on Earth. [video width="1280" height="720" mp4="https://video-clump.com/wp-content/uploads/2018/02/How-the-Universe-Works-Uranus-Neptune-Rise-of-the-Ice-Giants-ep.4-2018.mp4"][/video] Ice giants An ice giant is a giant planet composed mainly of elements heavier than hydrogen and helium, such as oxygen, carbon, nitrogen, and sulfur. There are two known ice giants in the Solar System, Uranus and Neptune. In astrophysics and planetary science the term "ices" refers to volatile chemical compounds with freezing points above about 100 K, such as water, ammonia, or methane, with freezing points of 273 K, 195 K, and 91 K, respectively (see Volatiles). In the 1990s, it was realized that Uranus and Neptune are a distinct class of giant planet, separate from the other giant planets, Jupite