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
いずれは地球も火星のようになるその理由
1,344,186 views |
アンジャリ・トゥリパーティー |
TEDxBeaconStreet
• November 2015
Read transcript
毎分、約180kgの水素と3kg近くのヘリウムが、地球の大気から宇宙空間へ散逸しています。この大気散逸に関する研究をしている天文物理学者のアンジャリ・トゥリパーティーは、いつか(数十億年後に)この青い地球も大気散逸で火星のように赤くなると、興味をそそる分かり易いトークで説明します。
environment
science
technology
rocket science
biosphere
future
astronomy
universe
Planets
TEDx
solar system
Mars
astrobiology
TED is supported by ads and partners