Register for an account


Enter your name and email address below.

Your email address is used to log in and will not be shared or sold. Read our privacy policy.


Website access code

Enter your access code into the form field below.

If you are a Zinio, Nook, Kindle, Apple, or Google Play subscriber, you can enter your website access code to gain subscriber access. Your website access code is located in the upper right corner of the Table of Contents page of your digital edition.

The Sciences

Galaxies in your iPhone

Cosmic VarianceBy Daniel HolzJuly 30, 2009 10:16 PM


Sign up for our email newsletter for the latest science news


We've gotten a little bent out of shape over gravitational lensing recently (see here and here). But the fun doesn't stop: gravitational lensing has now officially come into the 21st Century with the release of Eli Rykoff's GravLens. (Not to be confused with GRAVLENS, Chuck Keeton's immensely useful and powerful gravitational lensing modeling software). You can now lens a star, a galaxy, or an image of whatever or whomever you want (e.g., your favorite blogger), right in the comfort and safety of your own palm. GravLens is freely available at the iPhone application store. Go download it, and make yourself a beautiful Einstein Ring. This is your chance to support the fledgling "Physics applications for the iPhone" industry!

3 Free Articles Left

Want it all? Get unlimited access when you subscribe.


Already a subscriber? Register or Log In

Want unlimited access?

Subscribe today and save 70%


Already a subscriber? Register or Log In