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Asteroid Close Approaches. Written for Astronomy 360. Web Links for asteroid research and Halley’s Comet. http:// neo.jpl.nasa.gov/neo/close.html http://en.wikipedia.org/wiki/Halley%27s_Comet#Orbit_and_origin. NASA. NASA. NASA’s Wide Field Infrared Survey Explorer is now active. M31.
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Asteroid Close Approaches Written for Astronomy 360
Web Links for asteroid research and Halley’s Comet • http://neo.jpl.nasa.gov/neo/close.html • http://en.wikipedia.org/wiki/Halley%27s_Comet#Orbit_and_origin
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.
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]