universetoday.com
Companion Star Changed Supernova's Appearance
The Galaxy NGC 7424 as imaged by Gemini. Image credit: Gemini South GMOS. Click to enlarge When a supernova was discovered in December 2001, astronomers immediately tagged it as a Type II – when a gigantic star runs out of fuel and explodes. But then the tell tale hydrogen surrounding it disappeared, and astronomers had … Continue reading "Companion Star Changed Supernova’s Appearance"
Fraser Cain