  The phase or orbital light curves of extrasolar terrestrial planets in
reflected or emitted light will contain information about their atmospheres and
surfaces complementary to data obtained by other techniques such as
spectrosopy. We show calculated light curves at optical and thermal infrared
wavelengths for a variety of Earth-like and Earth-unlike planets. We also show
that large satellites of Earth-sized planets are detectable, but may cause
aliasing effects if the lightcurve is insufficiently sampled.
