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

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]