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Why SpaceX is Making Starlink – YouTube

June 15th, 2019 No comments

 

OK, so now I get why Starlink is so interesting:

  • 10B$US vs 150B$US for the switch to 5G (and that might just be the fiber build out, no hardware at each end… need to re-watch to know for sure.).
  • done in 10 years, probably in limited form to very spendy customers (stock trading advantages of milliseconds = $$$$)
  • expects revenue to exceed NASA’s budget.
  • expects monthly cost for residential users to be subsidized by very expensive services to extreme time-sensitive users (stock trading is the obvious first adapters)
  • residential user need a pizza box sized, thin enough to mount on a vehicle, attic mounted, 200$US

Ummmm…. if I owned physical plant, or wires in the ground, it might be time to sell.  But what to I know?

 

Categories: Decent!, Elon Musk Tags:

IAU Statement on Satellite Constellations | IAU

June 6th, 2019 1 comment
Categories: Astronomy, Elon Musk, Space, Uh-oh Tags:

Trails made by Starlink satellites | IAU

June 6th, 2019 No comments

Source: Trails made by Starlink satellites | IAU

60 up, 1140 to go.

One point: the link suggests these satellites will fade; a week after launch they were mag. 3 to 6, and seemed to me to be heading dimmer (magnitudes work in reverse, like wire gauge, well, AWG at least… ).  So they could be out of naked eye view (>~mag 6) if they go much higher.

But if they’re doing 12000 total over 10 years, 200 launches, 20 a year.  So ~2 times a month there will be a multi-week interuuption in dark sky astronomy.

Another point: these sateliites, as with all that aren’t generating their own light (which is all current satellites), are visible by the reflected light from the just-set sun.  Once the sun sets far enough, sunlight doesn’t reach these satellites.  Think of being on the satellite, 300km high orbit, the sun sets when *you* can’t see it anymore.  And for satellites in such a low orbit, this is not very long, perhaps 1 hour after sunset.

Categories: Astronomy, Elon Musk, Space, Uh-oh Tags:

Interactive Animation of Tesla Roadster Trajectory

May 27th, 2019 No comments
Categories: Decent!, Elon Musk, Tesla Tags:

Starlink: How SpaceX’s 12,000-satellite internet network will work – Business Insider

May 23rd, 2019 No comments
Categories: Elon Musk, Space Tags:

Elon Musk’s Hilariously Bad Subway System Leaves Virginia Transit Officials Baffled | GQ

May 16th, 2019 No comments
Categories: Elon Musk, Tesla Tags:

David Einhorn: Elon Musk Tesla promises ‘a lot of horse—t’

May 16th, 2019 No comments
Categories: Economics, Elon Musk, Tesla Tags:

Failed SpaceX Parachute Test Is Yet Another Setback for NASA’s Crew Program

May 16th, 2019 No comments
Categories: Elon Musk, Space Tags:

Elon Musk’s Bold Plan to Bring Cheap, Fast Internet to Billions of People Launches This Week | Inc.com

May 16th, 2019 No comments
Categories: Elon Musk, Space Tags:

Family of Apple engineer sues Tesla, saying Autopilot caused his fatal crash – CNN

May 6th, 2019 No comments
Categories: AI, Elon Musk, Self Driving Car, Tesla Tags: