Students and faculty at Chennai's Sathyabama University are happy. The 1.5 kilo satellite "Sathyabamasa" they built to collect data on greenhouse gases is now successfully orbiting the earth - one of the 20 satellites launched on Wednesday by ISRO's PSLV rocket. The launch was the culmination of 7 years of hard work by the faculty and students. A base station, set up on the top floor of the university, is tracking the satellite - they say it is doing well.