January 14, 2010
Astronomers have obtained a direct spectrum of the exoplanet HR 8799 c, about 130 light years from Earth, and if you watch your definitions, it’s possible to call this the first ‘direct spectrum’ of such a world. I throw in the qualifier because way back in 2004, astronomers using the ESO’s Very Large Telescope and [...]
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January 13, 2010
Glints of light off oceans or ice caps would be useful indeed as we try to figure out what we’re seeing on a distant terrestrial world. One day we’ll have the kind of instrumentation that can make direct observations of a planet like this, separating its light from that of its star. A ‘terrestrial planet [...]
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