Recent comments in /f/space

Siellus t1_j498mmv wrote

Technically, yes.

Realistically, no.

Have one gigantic galaxy sized & perfectly calibrated refracted mirror 10 lightyears away perpetually focused on us at all times.

Point a gigantic planet sized telescope at it. done, you can now see Earth Live from 10 20 years ago.

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AtHomeInTheUniverse t1_j498mh4 wrote

I did my dorm room once using the constellations as they appeared at the moment I was born. You can find free websites that will plot the sky as it appeared at any time and place. I used little glow in the dark star stickers, and a black light to charge them. I even had a little dot on a string attached to a motor that made a satellite fly across the sky.

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Siellus t1_j496syh wrote

You mean the one that gets posted on reddit almost every day, "Think about what we'll know tomorrow"

Yeah, but Time travel is a whole different thing.

People keep regurgitating "yeah but we also didn't think people could fly" Yeah but we knew it was possible, Birds fly. Nothing in the universe travels through time.

Yes "That we know of", but inadvertently, if something like that is so hard to find, it might just give credit to just how outside of the realm of possibility it really is for gigantic, living creatures such as us to do it.

Science fiction and television have made the prospect seem so tangible, when in reality it's a lot like asking "Will we ever be able to shoot giant beams of energy out of our hands and destroy mountains like in Dragon Ball Z?"

The answer is no. Not just because "we don't know how to do it yet" but because it's literally impossible to the point where it doesn't make any sense at all.

Should we just stop trying? Lol no, That's not what I'm saying and that would be ridiculous, I'm saying it's not an active field of study, because the road to get to it either doesn't exist, or is so so so so unimaginably far out of reach, it may as well be impossible.

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StarChild413 t1_j496cpw wrote

> If time travel is possible, why aren't we seeing visitors from the future?

why do we assume it'd, like, be, people in obviously-futuristic-by-old-fashioned-sci-fi-standards clothing landing on the white house lawn during the term of a president they agree with to ask for his help preventing a disaster in our future but their past

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jsquirrelz t1_j4969fa wrote

> The very fact that events such as the Holocaust haven't been prevented gives me reason to believe we will never find a means of time traveling into the past.

Maybe, but they also could have potentially done it and discovered that it led to alternatives that were worse, right?

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Limos42 t1_j4963bt wrote

Time travel to the future is easily possible. We don't have the ability yet, but will soon enough. However, there's no going back in time.

You can travel to the future by jumping in a space ship and going somewhere very, very fast. The closer to the speed of light you go, the faster thru time you will travel. Depending on how far and fast you go before returning to earth, is how much time will have passed here, compared to you.

A few months for you could be decades or centuries here on Earth.

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