Astronomer watches Starlink satellites sinking to build a ‘planetary barometer’

• science The atmosphere expands and contracts; watching objects in orbit reveals the extent Astronomer and author, Dr.
• Tony Phillips, says he has found a way to turn SpaceX’s Starlink satellite constellation into a barometer.
• Phillips runs spaceweather.com, which tracks solar flares, the solar wind, shifts in Earth’s geomagnetic field, and other phenomena.