4 ms·
100 light-years is out of reach for humans, I would say :D
by goombacloud 4y ago
100 light-years is out of reach for humans, I would say :D
- _fat_santa 4y agoIf only wormholes stopped being "theoretical structures"
- speed_spread 4y agoHaven't you heard? Wormholes are tired, Alcubierre drives is where it's at nowadays. All we need now is a way to shovel away that pesky dark matter.
- claytongulick 4y agoOh, that problem has been solved. Haven't you heard? Dark matter doesn't exist [1] Off to the stars! [1] https://scitechdaily.com/dark-matter-may-not-exist-these-physicists-favor-of-a-new-theory-of-gravity/ https://scitechdaily.com/dark-matter-may-not-exist-these-phy...
- layer8 4y agoNot necessarily, if we could reach significant fractions of light speed. The subjective travel time can be shorter than 100 years, and approaches zero as you approach the speed of light. (Photons don’t experience time, so to speak, they are everywhere on their trajectory at once.)
- awestroke 4y agoAs your target speed approaches the speed of light, the energy required aproaches infinity
- layer8 4y agoOf course. But it’s a common misconception that traveling a distance of N light years will take at least N years subjectively. At something like 70% of light speed the subjective time already drops below the distance number: https://physics.stackexchange.com/questions/109776/how-long-would-it-take-me-to-travel-to-a-distant-star https://physics.stackexchange.com/questions/109776/how-long-...
- robofanatic 4y agosuppose we have the tech to travel at a significant fraction of light speed, how long will it take for the spacecraft to reach that speed and similarly how long will it take to slow down when you are approaching a target planet?
- deleted 4y ago[deleted]
- legohead 4y agoAt 1g constant acceleration, including deceleration, it's only 9 years. A flyby is only 5 years [1] [1] https://www.omnicalculator.com/physics/space-travel https://www.omnicalculator.com/physics/space-travel
- goombacloud 4y agoThat's the time passing in the vessel, not bad but still it means that such a mission would have to be completely self-sufficient and not rely on anything on/from Earth…
- fluoridation 4y agoWhere would you get the energy to accelerate constantly for nine years?