Extra-Solar Planets
		� Hard to see faint planet right next to very bright star � Two indirect techniques available (Like a binary star system but where 2nd �star� has extremely low mass) � Watch for Doppler �wobble� in position/spectrum of star � Watch for �transit� of planet which slightly dims light from star � About 100 planets discovered since 1996�� See http://exoplanets.org/ � Tend to be big (Jupiter) and very close to star��� (easier to see)