In this CNET video, senior producer Andy Altman reveals why astronomers are upset with SpaceX satellites. SpaceX is set to launch the Starlink internet service later this year in the U.S. and Canada. Elon Musk aims to launch at least 12,000 satellites for the project to beam high-speed internet across the world. This would triple the total number of satellites that are currently in the Earth’s orbit. Their bright surfaces would prevent the astronomers from having a clear view even during the night. Also, they would not be able to track and warn incoming asteroids because of the disruption. That said, the SpaceX satellites will fall back on Earth after completing five years of service.