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Why Mike loves Hubble's image of the Cone Nebula.
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Astronaut Mike Massimino's Favorite Hubble Photo
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Mike shows the space telescope some tough love in order to make vital repairs.
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Mike lists the films that inspire and thrill him.
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Mike dishes about Space Food.
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Astronaut Mike Massimino's Favorite Meal in Space
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Unexplained observations suggest the Moon is alive.
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Planet TrES-2b is so hot that its atmosphere absorbs virtually all the light from its star.
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A collapsed star orbiting a pulsar has become a giant diamond.
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02:56
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Charon is the strangest of Pluto’s very strange moons.
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Pluto's Moon Charon: A "Frankenstein" World
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Flowing liquid nitrogen smoothed the vast plain known as Sputnik Planum.
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02:53
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What Created Pluto's Heart?
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The mysterious planet may glow like a jellyfish.
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02:25
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Planet 9 Could Have a Transparent Atmosphere
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If Planet 9 exists, it may have been stolen from another star system.
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02:57
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A Case of Planetary Theft?
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Historic highlights from the record-setting Saturn probe.
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8 Extraordinary Cassini Moments
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Saturn's rings and moons teach us how planets formed around our sun -- and around other stars.
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02:37
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Saturn is a Snapshot of an Early Solar System
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Greenhouse gasses from volcanoes have helped raise Venus' surface temperature to 900 degrees Fahrenheit.
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How Venus Became a Hellish Planet
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Storm systems on Saturn form a perfect hexagon on the planet's north pole.
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Saturn's Amazing Hexagon
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NASAs Solar Dynamics Observatory listens to the sun by speeding up 40 days of recording into a few seconds
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NASA's space probes find Triton covered in frozen nitrogen ice.
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As scientists studied the Kuiper Belt, they became puzzled by a group of asteroids that deviated from the normal orbital path. The conclusion? There’s something massive out there that is pulling the asteroids out of line.
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Rogue Asteroids Helped Scientists Find Planet 9
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It may take light as much as a million years to escape from the suns fiery interior; from there, it has to travel 93 million miles to Earth, traveling at 186,000 miles per second -- about 8 minutes.
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Today's Sunlight Was Produced Before Human Civilization Began
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Nuclear fusion events create the elements in the universe with each reaction. The second heavy iron is created in a star’s core, it goes super nova and spreads the base elements into the universe.
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The Planck telescope peers through space and time towards the beginning of everything to capture an image of our universe from more than 13 billion years ago, 380,000 years after the Big Bang.
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13 Billion Years Ago, This Was Our Universe
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Will gravity or expansion win? There are three endgames: the universe will continue expanding forever, gravity and expansion will find balance, or gravity wins and the universe begins to get smaller.
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Will the Universe Expand or Contract?
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The heaviest metals in the universe can’t be created by nuclear fusion alone. Dense neutrino stars collide to create a burst of energy cataclysmic enough to bind the proton heavy stars into the heaviest elements like gold and lead.
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Ever wonder how storms are formed on other planets? In this web exclusive, explore mega storms on other planets in our solar system.
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Life is impossible on Venus, but can the brutal winds that sweep across the planet create the right conditions for life just above the surface?
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Planet Nine sits on the dark, distant edge of our solar system. Until we see the planet with our own eyes, we won’t know much about it’s surface. One theory is that Planet 9 is rocky like Earth, but 10 times as massive.
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Planet 9 May be a Rocky Super-Earth
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