The novel Starlink technology upholds precision in pointing accuracy, enabling data rates of up to an impressive 100 Gbps on each channel.
SpaceX has achieved a significant milestone by launching a new generation of Starlink satellites equipped with advanced optical space lasers and technology to mitigate light pollution. This development promises not only accelerated data transfer speeds but also a reduction in nocturnal light pollution.
On September 25, a SpaceX Falcon 9 rocket successfully deployed 21 Starlink satellites from the Space Launch Center 4 East (SLC-4E) at Vandenberg Space Force Base in California. These satellites augment the existing Starlink satellite internet constellation.
SpaceX proudly announced that the Starlink constellation now incorporates over 8,000 optical space lasers. These lasers empower satellites to establish connections over thousands of kilometers beyond the typical range of ground stations.
The novel Starlink technology upholds precision in pointing accuracy, enabling data rates of up to an impressive 100 Gbps on each channel. This enhanced network capability positions the company to furnish top-tier global coverage, including provision of services to distant maritime and aviation clientele.
Furthermore, the freshly launched satellites boast a pioneering design aimed at diminishing light pollution during nighttime hours. Employing cutting-edge technology, these new-generation Starlink satellites feature special dielectric (non-conducting) mirrors that diminish their visibility.
Beyond the satellite body’s surface, a significant portion of light is reflected by the solar modules. To counteract this, the rear side of the modules is treated to a black finish, preventing light transmission.
The front panel, previously white, now sports a dark red hue between the solar cells. Parabolic antennas responsible for communicating with Earth’s surface are coated with a special black paint.
The upgraded satellites also demonstrate the capability to precisely document the instance of crossing the “terminator” – the boundary between day and night on Earth. They can then fold the solar modules upwards, rendering the front part no longer discernible from the Earth’s perspective. This strategic off-pointing maneuver results in a 25% reduction in available power for the satellite.
Despite this trade-off, SpaceX has intentionally engineered the second-generation satellite to accommodate this notable power reduction, all in the pursuit of minimizing brightness as perceived from the ground.
While certain phases of flight, particularly satellite deployment and as they approach their intended orbit, may still render Starlink satellites visible, SpaceX is actively collaborating with astronomers to implement further refinements.
This technological leap signifies a monumental stride forward for satellite-based internet connectivity, bolstering SpaceX’s position at the forefront of space innovation.