Skip to main content
Skip to search
Ideas change everything
WATCH
TED Talks
Browse the library of TED talks and speakers
Playlists
100+ collections of TED Talks, for curious minds
TED Series
Go deeper into fascinating topics with original video series from TED
TED-Ed videos
Watch, share and create lessons with TED-Ed
TEDx Talks
Talks from independently organized local events
DISCOVER
Topics
Explore TED offerings by topic
Podcasts
Explore the TED Audio Collective
Ideas Blog
Our daily coverage of the world of ideas
Newsletters
Inspiration delivered straight to your inbox
ATTEND
Conferences
Take part in our events: TED, TEDGlobal and more
TEDx Events
Find and attend local, independently organized events
TED on Screen
Experience TED from home
TED Courses
Learn from TED speakers who expand on their world-changing ideas
PARTICIPATE
Nominate
Recommend speakers, TED Prize recipients, Fellows and more
Organize a local TEDx Event
Rules and resources to help you plan a local TEDx event
Translate
Bring TED to the non-English speaking world
TED Fellows
Join or support innovators from around the globe
ABOUT
Our Organization
Our mission, history, team, and more
Conferences
TED Conferences, past, present, and future
Programs & Initiatives
Details about TED's world-changing initiatives
Partner with TED
Learn how you can partner with us
TED Blog
Updates from TED and highlights from our global community
SIGN IN
MEMBERSHIP
Type to search
外星人在哪里？
6,502,601 views |
斯蒂芬 · 韦伯 |
TED2018
• April 2018
Read transcript
宇宙非常古老，大得不可思议，并且有数万亿颗行星——那么外星人都在哪里呢？天文学家斯蒂芬 · 韦伯对此有一个解释：我们在宇宙中是独一无二的。在这个让人大开眼界的演讲中，他讲述了一颗行星为了容纳外星文明而需要清除的巨大障碍——并且说明了我们可能是宇宙中绝无仅有的美丽之处。 “宇宙的沉默是在呐喊：'我们是幸运的生物'。”韦伯说。
science
astronomy
time
universe
physics
exploration
Planets
space
aliens
TED is supported by ads and partners
