How can we discern different galaxies/clusters along the same line of sight?
Thanks to the universe's expansion it is generally true that galaxies with different redshifts will have different distances from us.
Thus when we see multiple galaxies or clusters of galaxies in the same area of the sky we can distinguish which ones are related by comparing their distances through their redshift.
Get More 'Curious?' with Our New PODCAST:
- Podcast? Subscribe? Tell me about the Ask an Astronomer Podcast
- Subscribe to our Podcast | Listen to our current Episode
- Cool! But I can't now. Send me a quick reminder now for later.
How to ask a question:
If you have a follow-up question concerning the above subject, submit it here. If you have a question about another area of astronomy, find the topic you're interested in from the archive on our site menu, or go here for help.Table 'curious.Referrers' doesn't existTable 'curious.Referrers' doesn't exist
This page has been accessed 13950 times since April 30, 2006.
Last modified: April 30, 2006 10:30:14 PM
Ask an Astronomer is hosted by the Astronomy Department at Cornell University and is produced with PHP and MySQL.
Warning: Your browser is misbehaving! This page might look ugly. (Details)