Missing the sky

The following comes from The Convivial Society newsletter which we have borrowed from before.

I began to think about the loss of the night sky as I was reading about the latest SpaceX launch carrying another batch of Elon Musk’s Starlink satellites.
SpaceX currently aims to place 12,000 of these satellites in orbit and is seeking permission to eventually place upwards of 40,000. The goal is to create a global broadband network making the internet accessible to even the earth’s most remote regions. Musk has said that, thanks to Starlink, anyone “will be able to watch high-def movies, play video games and do all the things they want to do without noticing speed.” With the latest launch a few days ago, there are now 952 Starlink satellites in orbit. By comparison, there have been about 8,000 total satellites put into orbit since the launch of Sputnik in 1957. We should note, too, that SpaceX is not alone in these efforts. Amazon’s Project Kuiper has also secured FCC approval to put 6,236 satellites in orbit.

Musk’s ambitions have caused more than a little controversy among astronomers, who fear that this blanket of satellites will hamper their efforts to study the universe from earth-based telescopes. Since the launch of the first Starlink satellites in 2019, which were brighter than 99% of the other 200 orbiting human artifacts visible to the naked eye, SpaceX has responded to these concerns with measures to darken the satellites and equip them with visors to reduce their impact on earth-based astronomical observations. But while these measures have helped to some degree, scientists say the problem remains. Starlink satellites remain brighter than a recommended 7th-magnitude threshold, which would put them beyond visibility to the naked eye.

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