Search found 2 matches

by norup
Tue Mar 13, 2007 2:59 pm
Forum: The Bridge: Discuss an Astronomy Picture of the Day
Topic: The Einstein Cross Gravitational Lens (APOD 11 Mar 2007)
Replies: 18
Views: 7590

Re: polar ring galaxy & Einstein Cross

It did not take me long to remind me of an earlier question, which I could not get answered before, even by an expert. - What strange mass distribution in a gravitational lens could possibly create the spectacular Einstein Cross? >> http://antwrp.gsfc.nasa.gov/apod/ap001010.html << Clearly enough, ...
by norup
Mon Dec 04, 2006 8:11 am
Forum: The Bridge: Discuss an Astronomy Picture of the Day
Topic: The Incredible Active Sun Movie! (APOD 4 Dec 2006)
Replies: 24
Views: 8161

Please note that the scale of the field should be 82000km, not 8000km.
This is according to the linked document on the page.