Image credit: Hubble The Hubble Space Telescope was recently used to identify the oldest extrasolar planet ever discovered. The 2.5 Jupiter mass planet was originally discovered around a pulsar in the globular cluster M4 way back in 1988; astronomers detected a regular dimming of the pulsar’s radio wave emissions. By using Hubble, astronomers were better … Continue reading "Hubble Identifies the Oldest Known Planet"