var items = new Array (new ImageMetaData('Artist\'s impression of the planetary system around the red dwarf Gliese 581. Using the instrument HARPS on the ESO 3.6-m telescope, astronomers have uncovered 3 planets, all of relative low-mass: 5, 8 and 15 Earth masses. The five Earth-mass planet makes a full orbit around the star in 13 days, the other two in 5 and 84 days.','http://msnbcmedia.msn.com/i/msnbc/Components/Photos/070424/070424_planet_hmed_2p.jpg','5:05 p.m. ET, 4/24/07','ESO','ESO',18296018));