LIGHT SECONDS, LIGHT YEARS,
LIGHT CENTURIES:
HOW TO MEASURE EXTREME DISTANCES
- YUAN-SEN TING
2,633,453 views
Oct 9, 2014
TED-Ed
14.8M subscribers
View full lesson: http://ed.ted.com/lessons/how-do-we-m...
When we look at the sky, we have a flat, two-dimensional view. So how do
astronomers figure the distances of stars and galaxies from Earth? Yuan-Sen
Ting shows us how trigonometric parallaxes, standard candles and more help us
determine the distance of objects several billion light years away from Earth.
Lesson by Yuan-Sen Ting, animation by TED-Ed.
Grateful
thanks to
YUAN-SEN TING
TED-Ed
and YouTube and all the others who made this video possible.
