史提芬霍金的宇宙：時間旅行 (片段及簡介)

史提芬霍金的宇宙：時間旅行
Stephen Hawking's Universe: Time Travelling
Added: Apr 23, 2010

Stephen Hawking's Universe: Wormhole Voyages
霍金的宇宙：蟲洞航行
If we could ever open a massive wormhole, could it be used as a portal for journeys to distant planets or the deep past?
如果我們曾經能打開一個巨大的蟲洞，它可以被用作旅程之門往遙遠的行星或深層的過去嗎？
http://dsc.discovery.com/videos/stephen-hawkings-universe-wormhole-voyages.html

Stephen Hawking's Universe: A Walk In Time
霍金的宇宙：漫步時間中
Hawking and other visionary physicists consider the possibility of using wormholes as portals to the past and future.
霍金和其他有遠見的物理學家，考慮利用蟲洞作為門戶往過去和未來的可能性。
http://dsc.discovery.com/videos/stephen-hawkings-universe-a-walk-in-time.html

Stephen Hawking's Universe: Time Travel Starship
霍金的宇宙：時間旅行星船
In the future, a massive spaceship built for extreme velocities could acclerate to near light speed and travel into the future.
在未來，為極端速度建造的龐大星船，可以加速至接近光的速度和旅行往未來。
http://dsc.discovery.com/videos/stephen-hawkings-universe-time-travel-starship.html

Stephen Hawking's Universe: Black Hole Time
霍金的宇宙：黑洞時間
The immense gravity of black holes makes them natural time machines and someday spacecraft may be able use them to journey into the future.
黑洞的巨大引力使它們為自然的時光機，和某一天太空船可能使用它們在往未來的旅程上。
http://dsc.discovery.com/videos/stephen-hawkings-universe-black-hole-time.html

Stephen Hawking's Universe: Mad Scientist Paradox
霍金的宇宙：瘋狂科學家的悖論
Hawking uses a variation of the "grandfather paradox" to show why time travel can give cosmologists nightmares.
霍金用一個“祖父悖論”的變異，以展示為什麼時間旅行可以為宇宙學家帶來噩夢。
http://dsc.discovery.com/videos/stephen-hawkings-universe-mad-scientist-paradox.html


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