spaceflight, 3 months ago

An advanced #extraterrestrial civilization could potentially detect 🔭 signs of life on Earth. But the #scale of the #universe 🌌 is incredibly vast. Even at the speed of light, signals 📶 from #Earth 🌏 have only reached a very small portion of our #galaxy. https://newspaceeconomy.ca/2023/07/15/can-extraterrestrial-life-detect-us/

#SETI #FermiParadox #Astronomy

spaceflight, 1 month ago

Any civilisation 👽 reading our messages could be billions of years ahead of humans. “If so they will be vastly more powerful and may not see us as any more valuable than we see bacteria” https://www.theguardian.com/science/2016/sep/23/stephen-hawking-warns-against-seeking-out-aliens-in-new-film

#SETI

spaceflight, 1 month ago

“How do you know we’re the only time there’s been a civilization on our own planet ? After a couple of million years, the chances are that any physical reminder of your civilization has vanished, so you have to search for things like sedimentary anomalies or isotopic ratios that look off.” https://www.scientificamerican.com/article/could-an-industrial-prehuman-civilization-have-existed-on-earth-before-ours/

tsturm, 1 month ago

@spaceflight @nyrath I’m pretty confident that we’ll be messing this planet up to a point where even in a few million years it’s obvious we’ve been here.

spaceflight, 1 month ago

@tsturm maybe, but after > 200 million years there's near to no evidence any more https://en.wikipedia.org/wiki/Mantle_convection#Planform_and_vigour_of_convection

rivetgeek, 1 month ago

@spaceflight I read a series of novels about sapient theropods who discovered time travel and invaded the present, but I can remember what it was called. I just remember a velociraptor on the cover with some kind of blaster.

spaceflight, 1 month ago

👽 “Look at the mess we made when #Covid hit. We’d be like headless chickens 🐓. We cannot afford to be ill-prepared, #scientifically, #socially, and #politically rudderless, for an event that could happen at any time and which we cannot afford to mismanage.” https://www.theguardian.com/science/2022/dec/29/if-aliens-contact-humanity-who-decides-what-we-do-next

#SETI #Alien #Extraterrestrial #Contact

Inekeduzz, 3 months ago

@spaceflight Seems a great place for #musk and his ilk.

Eka_FOOF_A, 1 month ago

@Inekeduzz @spaceflight

https://climatejustice.social/@breadandcircuses/112356046232032805
https://spacey.space/

For over 40 years I've watched the fossil fuel industry owners buy up and squash alternatives to using fossil fuels. $Billions has been spent trying to stop Musk's successes with Tesla. Battery EVs, like Tesla made successful, don't need fossil fuels. The inventor of the modern DC inverter wind turbine was similarly attacked and dragged through the mud.

spaceflight, 1 month ago

@Eka_FOOF_A do you refer to #Astroturfing ? https://en.wikipedia.org/wiki/Astroturfing