Bengaluru-based start-up Pixxel is set to launch three hyper-spectral satellites, called Fireflies, on Tuesday onboard SpaceXs Transporter-12 mission from California. The three satellites weighing 60 kg each are the first among the six planned to be launched this year, the company said. The second batch of three satellites is expected to be launched in the second quarter of the year. The satellites will be placed in a sun-synchronous orbit at roughly 550 km altitude. Once fully deployed