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Discovery Presents
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Most black holes probably form when supermassive stars collapse into a dense gravitational mass that absorbs all light.
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Discovery Presents
Birth of a Black Hole
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If black holes are really just the entrance to worm holes we may be able to use them as shortcuts to travel through time and space.
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Discovery Presents
Time Travel Portal?
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In 1924, Edwin Hubble discovered that there were more galaxies other than the Milky Way.
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Discovery Presents
Family of Galaxies
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The sun has been lighting our planet for 4.6 billion years and dominates all life on Earth -- but it's a speck in comparison to the other stars in the universe.
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Discovery Presents
Big Stars
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Symmetry and sex appeal go hand in hand. See how strangers perceive beauty in an experiment based on facial symmetry.
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Discovery Presents
The Beauty of Symmetry
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Research has shown that a woman's sense of smell protects her from mating with a relative. Find out how in Discovery Channel's "The Science of Sex Appeal."
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Discovery Presents
Unsexy Scents
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Why are women more selective than men? It's biological. Find out why from Discovery Channel's "The Science of Sex Appeal."
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Discovery Presents
Women Are Choosier
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Are humans biologically programmed to mate for life? Learn surprising strategies of human mating, in Discovery Channel's "The Science of Sex Appeal."
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Discovery Presents
Mating for Life
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Why is the shape of the body so important? Scientist Kerrie Johnson has determined certain shapes that drive us wild. Get more in Discovery Channel's "The Science of Sex Appeal."
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Discovery Presents
Shapely Figures
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If humans are biologically built to stray, is there any hope for love for life? According to professor Helen Fisher, there are signs of it all around us.
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Discovery Presents
Is Monogamy the Answer?
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A woman's voice changes with her monthly cycle. Science says this is perceived as more attractive. See for yourself.
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Discovery Presents
Voices on Estrogen
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Could copulance be a hidden weapon in women's armory of attraction? Men seem to lose all ability to think clearly when exposed. Learn more from Discovery Channel's "The Science of Sex Appeal."
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Discovery Presents
Female Copulance
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While scouting for an attractive partner, you might have to settle for someone "in your league." Watch a mate selection experiment in Discovery Channel's "The Science of Sex Appeal."
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Discovery Presents
Out of Your League?
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What makes a voice attractive? Here's what science says. Discover what qualities are most desired by the opposite sex in Discovery Channel's "The Science of Sex Appeal" program.
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Discovery Presents
Sexy Voices
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Your skin can send sexual signals too. How? See the science behind the attractiveness of flesh in Discovery Channel's "Science of Sex Appeal" program.
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Discovery Presents
Signals of the Flesh
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What types of body movements are considered sexy? Watch a study of human body motions in Discovery Channel's "The Science of Sex Appeal" program.
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Discovery Presents
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Learn this season's obstacles for the cast of Gold Rush, then tune in to the series return on Friday, Oct. 26, at 9/8c.
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Gold Rush
An All-New Season
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Parker urgently needs new ground in order to hit his 2000 ounce goal. He heads to the far cut to see if it's thawed and has gold in the ground.
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Gold Rush
Sneak Peek: Parker Strips New Ground
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Todd and Jack reveal their claim's mysterious and creepy past...
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Gold Rush
The Dirt:Hoffman Horror Spoof
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In this exclusive first look at next week's episode, Tony tasks Monica with moving the 85-foot dredge conveyor to Paradise Hill, but things take a turn for the worse.
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Gold Rush
Beets Behind Schedule
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This year Jack Hoffman's beloved dog Blue passed away. Take a moment to look back at Blue and his many years as an ever-faithful mining companion.
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Gold Rush
The Dirt:Rest in Peace, Blue
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Hear what drives the men of Gold Rush, then tune in to the season premiere on Friday, Oct. 26, at 9/8c.
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Gold Rush
Determination
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In this sneak peek, the Hoffman crew is betting everything on Monster Red -- but is the washplant to much for them to handle?
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Gold Rush
The Baddest Washplant in the Klondike
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Tony Beets takes you on a behind-the-scenes tour of his claim and shares some little known facts about his crew.
03:35
Gold Rush
The Dirt:Exclusive Tour of Tony's BLEEPING Claim
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Parker's Far Cut operation grinds to a halt when Gene Cheeseman spots a problem with the washplant tailings.
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Gold Rush
Lose-Lose Situation
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A new crew, new machines, bold predictions and shocking turns: get an exclusive sneak peek at season five of Gold Rush, premiering Fri 9/8c on Discovery!
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Gold Rush
Season Five Sneak Peek
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Todd Hoffman reads mean tweets on The Dirt and has some choice things to say in response.
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Gold Rush
The Dirt: Mean Tweets: Todd Hoffman Edition
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Tony Beets is in a hurry to get his dismantled dredge on the road, but the final pieces are stuck in the mud.
03:06
Gold Rush
As Soon As Bleeping Possible
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Gene Cheeseman attempts to fix Parker's washplant by building a homemade spray bar using discarded materials.
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Gold Rush
Cheeseman's Bush Fix
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This season, Parker's mining operation is bigger than ever. He's prepared to go big for his 2000 ounce goal. Anything less is a failure in his eyes.
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Gold Rush
The Dirt:Gold Big or Go Home
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What's it take to strike it rich? The miners of Gold Rush weigh in. Gold Rush returns with all-new episodes Friday, Oct. 26, at 9/8c.
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Gold Rush
Skill vs. Luck
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