The Big Bang was an extremely hot event measuring a hundred million, trillion, trillion Kelvins; the average temperature on Earth is 288 Kelvins. The universe was pure energy, void of atoms, following the Big Bang. The coldest temperature measured on Earth was minus 125 degrees in Antarctica; the coolest place in our solar system is minus 397 degrees Fahrenheit.
Scientists have yet to determine the New Horizons' second mission following its fly-by of Pluto. Pluto and other objects within the Kuiper belt are so cold that gases become solids. Ice within the deep freeze of places such Sedna is not frozen water but a chemical reaction; comets contain a variety of ices which can be found scattered throughout the solar system.
Researchers look for exoplanets similar to the fictional ice planet of Hoth featured in "The Empire Strikes Back." Rogue planets are expected to be dark and freezing with a structure similar to that of Earth. On Earth, the oceans and waters freeze from the top down, but many frozen planets have methane lakes or ammonia oceans that freeze from the bottom up.
The coldest star-like object ever found is a Y-class brown dwarf that is 40 lightyears from Earth. Barnard 68 is a dark molecular cloud comprised of gas and dust. The Boomerang Nebula is the coldest place found in the known universe and consists of rapidly expanding gases of a dying star.
As the universe expands, all of the energy created by the Big Bang slowly dissipates, making many theoretical physicists believe all heat and light will leave and the universe will permanently freeze.
Credits: Deep Freeze
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There really are ice worlds like Hoth from Star Wars. In this episode, we explore icy planets and moons, discover the role of cold in the Universe, and learn about the importance of ice to the development of habitable worlds.
Length: 45 minutes
Copyright date: ©2011
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Not available to Home Video, Dealer and Publisher customers.
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Our Place in the Milky Way
How the Solar System was Made
Science Fiction, Science Fact
Nemesis: The Sun's Evil Twin
Worst Days on Planet Earth
Living in Space
It Fell from Space
Biggest Things in Space
Ride the Comet
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