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by Patricia Johnson
Mon Feb 19, 2007 3:14 pm
Forum: The Bridge: Discuss an Astronomy Picture of the Day
Topic: Nova over IRAN (APOD 19 Feb 2007)
Replies: 10
Views: 1641

Nova Over Iran

http://antwrp.gsfc.nasa.gov/apod/astropix.html
The officially dubbed Nova Scorpii 2007 has become so bright in recent days that it is now visible to the unaided eye.
Could someone tell me what makes a Nova brighten and dim?

Thank you.