Astronomers said they, or at least their telescopes, had laid eyes for the first time on planets beyond the solar system. Using the Nasa Spitzer Space Telescope and careful timing, teams studying two planets were able to distinguish the glow of the planets' infrared radiation from the overwhelming glare of their parent stars. Both planets are so-called hot Jupiters, massive bodies circling their stars in tight, blowtorching orbits and may be unfit for the kind of life found on Earth.