Light seconds, light years, light centuries: How to measure extreme distances

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artist's concept of Cassini during the Saturn Orbit Insertion (SOI) maneuver

ERN Item Type: 

  • Videos or Animations

Organization: 

TED-Ed

Description: 

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.

Publication Year: 

2014

Grade Level: 

Tags: 

Earth Science Big Ideas: 

Is this tagged to NGSS by the organization?: 

No

NGSS Disciplinary Core Ideas: