Tonight's Sky
Sun
Sun
Moon
Moon
Mercury
Mercury
Venus
Venus
Mars
Mars
Jupiter
Jupiter
Saturn
Saturn

Tonight's Sky — Change location

OR

Searching...

Tonight's Sky — Select location

Tonight's Sky — Enter coordinates

° '
° '

Astronomy magazine podcast: Distant galaxies

Caltech astronomer Dan Stark explains the research that found the most distant galaxies yet seen.
NASA's Hubble Space Telescope imaged Abell 2218, a giant cluster of galaxies and the best example of a natural gravitational lens. The cluster is so massive that its enormous gravitational field deflects light rays passing through it, magnifying and brightening images from faraway objects. Astronomers announced this week the discovery of distant galaxies, found using gravitational lensing.
NASA Goddard Space Flight Center
July 12, 2007
Using natural "gravitational lenses," an international team of astronomers claim to have found traces of the most distant galaxies yet seen. Light we see from them today left more than 13 billion years ago, when the universe was just 500 million years old.

In this week's show, team member Dan Stark shares insight on this research.

After you listen, e-mail us here and let us know what you think.

Let us know what you think about our podcast by taking this short survey.

To subscribe to our podcast, click here.
Downloadable File(s)
0

JOIN THE DISCUSSION

Read and share your comments on this article
Comment on this article
Want to leave a comment?
Only registered members of Astronomy.com are allowed to comment on this article. Registration is FREE and only takes a couple minutes.

Login or Register now.
0 comments
ADVERTISEMENT

FREE EMAIL NEWSLETTER

Receive news, sky-event information, observing tips, and more from Astronomy's weekly email newsletter.

ADVERTISEMENT
ADVERTISEMENT
BoxProductcovernov

Click here to receive a FREE e-Guide exclusively from Astronomy magazine.

Find us on Facebook

Loading...