A new study finds that we could detect oxygen in the atmosphere of a habitable planet orbiting a white dwarf (as shown in this artist's illustration) much more easily than for an Earth-like planet ... more 
A new study finds that we could detect oxygen in the atmosphere of a habitable planet orbiting a white dwarf (as shown in this artist's illustration) much more easily than for an Earth-like planet orbiting a sun-like star. less 
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SPACE.com | Photo By David A. Aguilar (CfA)
Mon, Mar 4, 2013 11:12 AM EST