Synopsis
Astronomers are using NASA's Spitzer Space Telescope to probe the structures of circumstellar discs, the dusty discs that surround young stars, to look for the earliest signs of the formation of planetary systems. Examining young stars in the constellation of Taurus known to have such discs, Spitzer's ultra-sensitive infrared spectrograph instrument has detected the clearest evidence to date that an inner gap has formed in the disc surrounding the star CoKu Tau 4. Such a gap could indicate the…
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