Our IAU Centre for the Protection of the Dark and Quiet Sky from Satellite Constellation Interference paper on observations of the #BlueWalker3 prototype #satellite is finally out in the latest print edition of Nature accompanied by a News & Views piece by @sundogplanets.
Today, a group of scientists including @cgbassa and Yours truly published a paper on A&A. We report about a fascinating finding: #satellite constellations can leak electromagnetic radiowaves, originating from onboard electronics, which we detected using the #LOFAR radio telescope. 1/
The authors find that over 5 years, the #StarLink project would emit between ~0.5 and 1 tonne CO2eq per subscriber, and up to ~3 t CO2eq / subscriber for #Amazon's #Kuiper project. Those values are 31-91 times HIGHER than eq. terrestrial #mobile#broadband.
As an "independent source" it was used by politicians, students, and many everyday people alike.
It was used for #publications & #documentaries, and triggered some inquires where I assisted in shaping national & international political statements. It's been fun & fulfilling 🙂
In today's siloed internet its usefulness is gone. No more days with 5.000 unique visitors & multiple email inquires.
Overfishing.org contained both an introduction to the issue of #overfishing, and #teaching resources. See attached some evergreens (low resolution, DM me for high res).
On May 16, Russia launched a spacecraft into #space in the orbit of U.S. satellites. U.S. intel believes the #satellite could attack and spy on other satellites.
It was also reported that the #us believes #Russia is developing a space weapon that is able to take out networks of satellites.
"#SpaceX satellites threaten to hide asteroids that pose danger to humanity
The International Astronomical Union demands that urgent action be taken against the uncontrolled proliferation of these devices. #Starlink satellites make it difficult to search for objects at risk of impacting the Earth"
Bonjour 🌎🍂
C'est jour d'équinoxe d' #automne dans l'hémisphère nord !
Avec cette animation des images du #satellite#GOESEast de la #NOAA, on voit bien le changement d'axe de la #Terre vis à vis du Soleil depuis l'an dernier
SpaceX's massive Falcon Heavy Rocket successfully launched Hughes' massive Jupiter 3 satellite to geosynchronous transfer orbit last night more than 28000km up in space. That should mean better rural broadband in the 4th quarter with quadrupled download speeds. I'm guessing that'll cost a lot more, though.
Sentinel-1 #satellite showing the long line of cars in the "Exodus" line at Burning Man at 2023-09-05 0152UTC (yesterday, PT) -- enough metal there so it's highly reflective. #BurningMan#imaging
"We find that the CMIP6 simulations in the central Arctic, with generally thicker ice and snow, align well with satellite observations ... By contrast, climate reanalyses like ERA5 exhibit widespread warm biases exceeding 2 °C in the same region."
New satellite imagery: Kakhovka Reservoir in Ukraine no longer exists