... Tonight's Sky . ... Observing . ... Exoplanet surprise . Astronomers have directly measured the first spectrum from a known planet orbiting a distant star. ... Astronomers have measured the first-ever infrared spectrum of two planets orbiting distant Sun-like stars. ... By observing this "secondary eclipse," astronomers can tease out the faint signal of the planet from the overwhelming light of the nearby star. ... Only registered members of Astronomy.com are allowed to comment on this article. ...