New discoveries regarding the Outer Planets are creating a fundamental rethinking of our solar system. Uranus is a toxic combination of hydrogen, helium and methane. Scientists speculate that the planet was knocked on its side after colliding with another body. Neptune's largest moon, Triton, is cold and barren, but some scientists speculate that liquid water might exist under Triton's icy surface. If this is proven true, Triton could be the home to one of the biggest discoveries of all time. Cold and inhospitable, Pluto completes one orbit around the solar system every 248 years. Cutting-edge computer graphics are used to bring the universe down to earth to show what life would be like on other planets, and to imagine what kind of life forms might evolve in alien atmospheres.
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Universe Season Show Documentary Space Science Physics Laws Gravity Newton Albert Einstein Stephen Hawking Newton's law of universal gravitation Sir Isaac Newton: The Universal Law of Gravitation Astronomy Comets Space Galileu Galilei Galaxy Constellation Orion Nebula Dark Matter Dark Energy Expansion Star Planet Solar System The Sun Mercury Venus Earth The Moon Lunar Spaceship Mars Speed of Light Phobos Deimos Jupiter Metis Adrastea Amalthea and Thebe Io Europa Ganymede Callisto Leda Himalia Lysithea Elara Ananke Carme Pasiphae and Sinope Recently discovered moons Saturn Pan and Atlas Prometheus and Pandora Epimetheus Janus Mimas Enceladus Tethys Telesto and Calypso Dione and Helene Rhea Titan Hyperion Iapetus Phoebe Recently discovered satellites Uranus
Cordelia Ophelia Bianca Cressida Desdemona Juliet Portia Rosalind Belinda and Puck Miranda Ariel Umbriel Titania Oberon Caliban Sycorax Prospero Setebos Stephano and Trinculo Neptune Naiad Thalassa Despina and Galatea Larissa Proteus Triton Nereid Pluto Charon Nix and Hydra Dwarf Planets Pluto Ceres Eris Makemake and Haumea Small Bodies Comets Comet Halley Comet Shoemaker-Levy 9 The Kuiper Belt and the Oort Cloud Sedna Asteroids 951 Gaspra 243 Ida 253 Mathilde 433 Eros Meteors Meteorites and Impacts The Interplanetary Medium Black Hole Red Giant Dwarf Planet Dwarf Remnants Atoms Atom The Big Bang Theory Theories Physics Astronomy Astrophysics Cosmology High Energy Physics Quantum Optics and Condensed Matter Physics Planetary Physics Physics Teaching Experimental Theoretical The Unknown seminar colloquium meeting Warp Planetary-sized object Planetary Size Sized wandering star celestial body orbiting Orbit star stellar remnant gravity thermonuclear fusion cleared neighbouring region planetesimal planetesimals International Astronomical Union Ptolemy deferent and epicycle Motion Astronomer Michio Kaku planets orbited the Sun Galileo Galilei Johannes Kepler elliptical astronomers Space Age probes volcanism Plate Tectonics Erosion Geology hurricane tectonic hydrology large low-density gas giants and smaller rocky terrestrials low density giant terrestrial Sun Mercury Venus Earth Mars four gas giants Jupiter Saturn Uranus Neptune natural satellites dwarf planets small Solar System bodies extrasolar planets exoplanets Milky Way Galaxy Extrasolar Planets Encyclopaedia 1 History Babylon Greco-Roman astronomy India Medieval Muslim astronomy European Renaissance 19th century 20th century 21st century Extrasolar planet definition 2006 definition Former classifications Mythology and naming Formation Solar System Planetary attributes Extrasolar planets Planetary-mass objects Rogue planets Sub-brown dwarfs Satellite planets and belt planets Attributes Dynamic characteristics Orbit Axial tilt Rotation Orbital clearing Physical characteristics Mass Internal differentiation Atmosphere Magnetosphere Secondary characteristics Wind Season The Kuiper Belt the Oort Cloud Ring Main Asteroid Belt Greek astronomy Neo Assyrian Babylonian Astronomy Venus Astrologer Astrologers Mercury Enuma anu enlil Mesopotamia mythology religious cosmology classical planets naked eye wandering star telescope Io Europa Ganymede Callisto Titan Iapetus Rhea Tethys Dione Pallas Juno Vesta Ceres Pluto Astrea Hebe Iris Flora Metis Hygeia Parthenope Victoria Egeria Irene Eunomia Week Day Ancient Greece Helios Selene Olympians Nergal Nabu Marduk Ares Cronus Titan Phosphoros Zeus Hermes Aphrodite Ishtar Empire Pantheon Mercurius Iuppiter Saturnus Poseidon Deity Anglo-saxon god Sub brown dwarf Kepler laws of planetary motion Mass Atmosphere Double planet Dwarf planet Exoplanet -- celestial body outside that solar system Mesoplanet Minor planet -- celestial body smaller than a planet Planetar (astronomy) Planetary mnemonic Planetesimal Protoplanet Rogue planet Extraterrestrial skies List of hypothetical Solar System objects Landings on other planets Space exploration List of planet-satellite systems Planetary habitability Planetary science Exoplanetology Theoretical planetology Planets in astrology Planets in science fact
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Most Dangerous Places S01E12 - The Universe - History Channelby AtheistsAreSkeptics15,783 views
Pluto had a pretty nice run, but ultimately his end was inevitable. Thanks for the memories bro.
ziiik0 2 days ago
@FF8 Brown can't hold Tombaugh's jock strap.
CreatureFeatureFred 3 days ago
Pluto will ALWAYS be the 9th planet.
CreatureFeatureFred 3 days ago
Back in school, Mike Brown did an oral report about a planet. No one cared to listen because everyone was excited about the upcoming prom. Mike Brown did not have a date so he was flabbergasted about the reception because he investedso much time on the report. He looked at all his classmates in the eye and he swore "All of ye who did not listen will know about this tiny planet! And that also goes for your children and your children's children!"
FF8 1 week ago
@Karl113355 I think the meaning of life is to call people like you stupid for making dumb comments like that.
Candurry 1 week ago
What if the meaning of life was actually something quite simple, like all we're here to do is look after cats or something?
Karl113355 4 weeks ago
Pluto will always be a planet to me. It's my favourite planet. Do scientists expect me to pick some other planet as my favourite? Have you seen Uranus? That planet is a joke!
olelumpy 4 weeks ago 2
In the beginning there was darkness and then bang my Dick appeared boom boom... No offence...
sisilio1 1 month ago
I think the new definition of planet isn't a very good one though. Stars have a good classification system. Planets are still in desperate need of one.
Me I'd propose we define a planet as an object large enough to have a roughly spherical shape by force of it's own gravity. Which isn't perfect either, but would work much better. (And yes I know that would define many moons as planets, but that's a GOOD thing I think, they're similar objects after all.)
TheSkunkCat 2 months ago
Interesting that they figure that the dark spots on pluto would be silicate rock. I'd figure they'd be carbon compounds instead.
Actually once the probe gets there in a few years I wonder who's right.
TheSkunkCat 2 months ago