The Giant Korean@lemmy.world to Showerthoughts@lemmy.worldEnglish · 3 months agoThe reason why we never meet time travelers is because our civilization ends before the technology can come to fruition.message-squaremessage-square98fedilinkarrow-up1279arrow-down127file-text
arrow-up1252arrow-down1message-squareThe reason why we never meet time travelers is because our civilization ends before the technology can come to fruition.The Giant Korean@lemmy.world to Showerthoughts@lemmy.worldEnglish · 3 months agomessage-square98fedilinkfile-text
minus-squareBjörn Tantau@swg-empire.delinkfedilinkarrow-up8arrow-down1·3 months agoYou can use the cosmic microwave background as a universal reference frame. Relative to that we move at about 370 km/s, depending on the time of the year.
minus-squarehorseloaf@lemmy.worldlinkfedilinkarrow-up1·3 months agoNow I’m hurting my head by thinking about traveling faster than 370 km/s in the opposite direction to Earth…
minus-squareBjörn Tantau@swg-empire.delinkfedilinkarrow-up4·3 months agoFor reference: Voyager 1 is traveling at 17 km/s away from the sun. The Parker Solar Probe should reach 191 km/s but will be flying towards the sun.
You can use the cosmic microwave background as a universal reference frame. Relative to that we move at about 370 km/s, depending on the time of the year.
Now I’m hurting my head by thinking about traveling faster than 370 km/s in the opposite direction to Earth…
For reference: Voyager 1 is traveling at 17 km/s away from the sun. The Parker Solar Probe should reach 191 km/s but will be flying towards the sun.