Upload

Loading...

Zeroing in on Hubble's Constant

1,039

Loading...

Loading...

Transcript

The interactive transcript could not be loaded.

Loading...

Loading...

Rating is available when the video has been rented.
This feature is not available right now. Please try again later.
Uploaded on Feb 28, 2009

The rate at which the universe is expanding, a value known as the Hubble constant, has been hotly debated for the last 80 years. Now the director of the Carnegie Observatories, Wendy Freedman, will lead a team who will slash the uncertainty of this value to just 3% via the new Carnegie Hubble Program using NASAs space-based Spitzer telescope.

Loading...

to add this to Watch Later

Add to