I presented at the local planetary journal club this morning about the 3 articles I co-authored for The Conversation in the past weeks about the effects that one million satellites would have on the night sky, the atmosphere, and the orbital environment (spoiler alert: all very very bad)

https://theconversation.com/a-new-space-race-could-turn-our-atmosphere-into-a-crematorium-for-satellites-276366

https://theconversation.com/too-many-satellites-earths-orbit-is-on-track-for-a-catastrophe-but-we-can-stop-it-275430

And one on light pollution that I thought would get published today but might not be out until after the weekend.

A new space race could turn our atmosphere into a ‘crematorium for satellites’

Planned ‘megaconstellations’ of satellites could cause unforeseen harm to the ozone layer and climate systems. Global regulation is needed before it’s too late.

The Conversation

The third article in this (horrible) series of articles I've co-authored is now out. https://theconversation.com/a-million-new-spacex-satellites-will-destroy-the-night-sky-for-everyone-on-earth-277938

A million satellites of the size required for "AI data centers" would mean that everyone in the world would have more visible satellites than stars for most of the night and most of the year.

But don't worry, we'll be in Kessler Syndrome WAY before we get to a million satellites!

A million new SpaceX satellites will destroy the night sky — for everyone on Earth

If SpaceX launches one million new satellites, it will increase atmospheric pollution and risk of falling debris. And we will see more satellites than stars.

The Conversation

RE: https://mastodon.social/@sundogplanets/116152057176915428

I've got a thread here where I more carefully explain the prediction plot, and post a bunch of sky predictions for many latitudes around the world, just to make the point of how incredibly stupid the idea of a million satellites is.

Oh and fun fact, 2 people have sent me this terrifyingly stupid graphic from SpaceX this morning, showing that we actually significantly *underestimated* the reflecting area of these absolutely fucking enormous satellites they're planning. This is so stupid.
@sundogplanets logistical question: is there a starship now that doesn't reliably fall apart?
@hllizi @sundogplanets The figure shows Starship V3 that has not yet been tested, so we don’t know if it will blow up or not. They plan to launch it next month
@EricFielding
And Musk talks about an even bigger v4. Which will ofc work. 🤷‍♂️
@hllizi @sundogplanets