<ol><li><a href="https://www.ndtv.com/india-news/india-readies-record-satellite-launch-as-space-war-intensifies-1659574">In about 18 minutes, all 104 satellites were released into space</a>, each travelling at the speed of over 27,000 km per hour - 40 times the speed of an average passenger airline. </li><li>India's workhorse rocket PSLV-C37 is on its 39th mission. Among the 104 satellites are many belonging to international customers.</li><li>This is the heaviest version of the PSLV, weighing about 320 tonnes at lift-off and standing tall at 44.4 meters.</li><li>The main passenger is the Earth-mapping Cartosat 2 series satellite, which weighs 714 kg.</li><li>The smaller satellites belong to the US, Israel, Kazakhstan, Netherlands, Switzerland, United Arab Emirates will be launched. 96 of the satellites belong to the US.</li><li>Close to 90 small satellites named 'Doves' belong to one San Francisco-based company, Planet Inc. The Dove constellation will be used to image the earth at low cost. </li><li>Two ISRO-made Nano satellites belonging to international customers were also launched. They weigh about 1,378 kg. The PSLV first launched the Cartosat-2 and then its 103 co-passengers into the polar Sun Synchronous Orbit, about 520 km from the Earth.</li><li>PM Narendra Modi congratulated the scientists for successful launch, saying "this remarkable feat has made India proud".</li><li>In 2014, the Russian Space Agency has launched 37 satellites in one go.</li><li>This is ISRO's second successful attempt after the launch of 23 satellites in a single rocket in June 2015.</li></ol><br/>