5 ms·
so aliens are calling by phone?
by jose-cl 6y ago
so aliens are calling by phone?
- LargoLasskhyfv 6y agoWho knows? TBH I had this movie from 1982 in my mind https://en.wikipedia.org/wiki/E.T._the_Extra-Terrestrial https://en.wikipedia.org/wiki/E.T._the_Extra-Terrestrial wherein some sort of turtle/reptiloid alien is somehow stranded on Earth, and can make electronic(or all sorts of things? (can't remember anymore)) work with his (on demand) red glowing finger. And tries to build a "telephone" out of trash with the help of a child, to "phone home" and call for help.
- rurban 6y agoNope, they sent a rocket or satellite. The positive doppler shift means it's heading towards us, fast. If we would fly there, we would need about 80 years with our current rocket tech. It's the nearest earth-like planet afterall. They could be more advanced and be here earlier. We'll see.
- u801e 6y agoThe voyager 1 probe is about 21 light hours from us after 43 years even with gravitational assist. Proxima Centauri is about 4.2 light years away.
- rurban 6y agoCurrent rocket tech, not stone age.
- u801e 6y agoEven the New Horizons spacecraft's speed relative to earth is less than Voyager 1, and it was launched back in 2006.
- rurban 6y agoStill plain old conventional rockets. This would need 78.000 years, impossible. Eg with a lightsail or StarChip it would need 20 years. There are also other possibilities. My neighbor is rocket technician. https://earthsky.org/space/alpha-centauri-travel-time https://earthsky.org/space/alpha-centauri-travel-time
- u801e 6y agoYou did specify current rocket tech. The technologies you're talking about have not been tested or used commercially or by any space agency as far as I'm aware.