This image of the Helix Nebula, a dying star, was taken by both NASA and Caltech's Spitzer space telescope and GALEX instrument. The image is a composite from both space telescopes. More information and videos about this nebula can be found on NASA's Apitzer podcast on itunesU.
3. This image is a combined one, and belongs to both NASA and California Institute of
Technology in Pasaden. Helix Nebula and is a dying star, taken with the Spitzer space
telescope and something called a GALEX. You can watch videos of this on the NASAs
Apitzer podcast!
There are heaps of podcasts dedicated to cosmology. Podcasts of course in case you dont already know can be found on the program itunes. You just go to the itunes store (but of course podcasts are free!) and search for what you want in there. The results come back in sub headings, scroll down to podcasts results to find what you are looking for. Some quality podcasts I have found areNASAcast which are the name suggests is the podcast for NASA. Look for anything with the spitzer space telescope in it!