1. Asteroid Close Approaches Written for Astronomy 360

2. Web Links for asteroid research and Halley’s Comet http://neo.jpl.nasa.gov/neo/close.html http://en.wikipedia.org/wiki/Halley%27s_Com et#Orbit_and_origin

3. NASA

6. NASA’s Wide Field Infrared Survey Explorer is now active

7. M31

8. A nebula containing young, massive stars is located 20,000 light-years away in the Carina spiral arm of our Milky Way Galaxy. It contains a central cluster of huge, hot stars, called NGC3603 The cluster contains some of the most massive stars known.

9. Halley is generally pronounced /ˈhæli/, rhyming with valley, or /ˈheɪli/ rhyming with daily, [15] but Edmond Halley himself probably pronounced his name /ˈhɔːli/ "Hawley", as in the word "hall". [16]/ˈhæli/ [15] [16]