In satellite communications, the K a band allows higher bandwidth communication. It was first used in the experimental ACTS Gigabit Satellite Network, and is currently used for high-throughput satellite Internet access in geostationary orbit (GEO) by the Inmarsat I-5 system and Kacific K-1 satellite; in low Earth orbit (LEO) by the SpaceX Starlink system and the Iridium Next satellite series; it is also used in medium Earth orbit (MEO) by the SES O3b system; and the James Webb Space Telescope.