The journey to Andromeda and back. A 2 year journey from your perspective on the trip to Andromeda near the speed of light, yet 4 million yours would have passed on earth. The closer you are to the speed of light, the slower time passes from your perspective. It’s mind blowing. Einstein predicted this way back in 1915.
Don’t have to be going light speed. That’s why the satellites are off and have to be reset to the proper time. They are going so fast time slows down . I’m quite confident it’s only fractions of a second per year. But proof of relativity none the less.
Imagine you’re an astronaut getting ready for a trip to the Andromeda Galaxy. It’s really far—about 2.5 million light-years away. But you’ve got a spaceship that can fly insanely fast, almost at the speed of light. We’re talking 99.99999996% the speed of light. At that speed, time starts to get weird, according to Einstein’s theory of special relativity.
From the perspective of people back on Earth, your trip to Andromeda would take just over 2.5 million years. Coming back would take the same amount of time. So, while you’re gone, more than 5 million years would pass on Earth. That’s just basic math: distance divided by speed.
But here’s the wild part if you’re the one on the ship, it would only feel like about two years total. That’s because when you move that fast, time actually slows down for you compared to someone who’s standing still. This effect is called time dilation, and it’s been proven to be real.
There’s a formula for it, called the Lorentz factor:
In plain English, the closer your speed is to the speed of light, the bigger gamma becomes. In your case, gamma is around 2.5 million. That means one year for you equals 2.5 million years for someone on Earth. So if your round trip takes two years on your clock, over five million years would’ve gone by here.
This isn’t just some sci-fi idea. We’ve actually seen this happen with real stuff, like particles moving close to the speed of light in labs, or even with GPS satellites. Their clocks tick a little differently because they’re moving fast and are higher up in Earth’s gravity. Engineers have to correct for this, or GPS would be way off.
So if you blasted off to Andromeda and came back, you’d step off the ship only two years older, but Earth would be completely changed. Human civilization could be gone. The continents might look different. You’d feel like you time-traveled into a distant future because, in a way, you actually did.
Gorgeous shot
Oh boy. I remember some of this from when I read Poul Andersen’s sci-fi novel Tau Zero as a teenager.
Only Ford drivers can relate to this…. Lmao
Einsteinian relativity is probably correct but the so called scientist Cox is a globalist mouthpiece . Beware , it’s just like De Grasse tyson . Peace .
lol, the Chevy I just pulled off the gravel had something similar to say.
Cool , you’re an astro-photographer , I’m impressed Sausage .
Truth… they are both quite pompous.
That andromeda pic is very cool You can see the spiral arms of the galaxy. It looks like a cloud surrounding the bright center. Thanks for posting that.
Tyson is a piece of work. I can’t stand to watch him speak any more.
I’m a strange one I don’t believe we ever been to the moon, I also do t believe we have satellites in space, GPS is not based off a globe model and aircraft GPS and even maritime travel GPS done from a flat earth model, how exactly are we the earth spinning and rotating but yet none of our constellations never change you see the same ones every day from any part of the world.
NASA The great deceiver, can find a bunch of videos of buzz aldrin telling children in school and a few different tv show hosts we never been to the moon, our equipment is not stable enough to get threw the firmament or the van allen belt.
I have a 4" reflector that I don’t use anymore , yeah it is expensive and the bugs drive me crazy lol . Good for looking at the moon but it does get boring . I live in the bush so the stars are amazing without a scope .
There are a few of them , the Japanese dude , Cox , De Grasse Tyson , Sabine Hossenfelder(to a degree) , physics is lost , it has been for decades . Me thinks they’re giving us the old bum steer .
Thanks you very much! That’s a 45 second exposure taken in Wyoming. The sky objects are really faint to the naked eye. Its only with the long exposures that you get the detail. Then you need a tracking telescope to tack them as the earth rotates. Otherwise you end up with circular streaks as the earth moves beneath the stars. Theres actually pics where folks have centered the north star and the rest a just circles.
I’m into all that stuff big time since I was very young. Astrophotography is my next venture. As far as we know only photons can travel that fast. Anything that has mass can’t make it to the speed of light. When I look at M31 it’s just mind boggling that where looking at the light from 2.5 million years ago. Not that that’s going to matter us. But it is interesting.
It is mind boggling. We see YT videos all over the place that Betelguise is about to go supernova, which is a nonsense prediction. When it does explode, we won’t see it for 724 years, as it is 724 light years from Earth. It may have already gone supernova 100 years ago. We still wouldn’t know about it for the next 624 years.
