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Who is to say people already aren't? What makes you think you are special enough to be informed? Just like if ufos are actually humans, or maybe there are aliens visiting us and mankind has made contact with them. Evil rich bastard: "We gotta let everyone know bout this guys!" (Said no one). I like your whole fellow mankind "We" thinking but sorry to say it's not "We." dude.

I'll take a look thanks

Not an ad, but Displate has some really cool official NASA metal posters. I bought my son Artemis I, the Moon, and the Pillars of Creation. They looks great and he really likes them (3.5 yrs old). We’re using them to talk about the Artemis program, the upcoming moon landing and the search for the wonders of the universe with the JWST.

Short answer: no

Long answer: nooooooooooooo

What evidence do you have that it doesn't happen on a regular basis?

Falling in love with this idea. Wonder if I could transition this to fiber optics

Bookmarked this is her style actually

And this is why I came here. Awesome idea

She is 7 but has been asking for a few years now. I plan on this being a room to suit her age as well as something to grown into finding Easter eggs if you will . Start with paint, decals, an interesting piece to gain/keep interest and add in from there

Derp, You're right - I meant 5 lightyears away (roughly near proxima centauri, but went with 5 rather than 4.2 because meh) and 10 for the whole journey back and forth.

But you're right, I'll change it! :)

It's either impossible or, at least, we won't figure it out.

If it was possible then it would have already happened a near infinite number of times and we would be drowning in billions and billions of time travelers.

If you looked at a mirror 10 light years away, you would see 20 years in the past

What age range are we talking about? I have some good ideas but they're more for a 10-12 year old. Maybe an 8 year old. Know a good source for infographic posters and photo posters. More in line with STEM and rockets and spacecraft (real ones) than planets and space itself.

My gréât great son told me this was going to happen, years ago !.he's not born yet

Einstein's theory of General Relativity says yes. If you can travel away from Earth at a fast enough rate then come back time would accelerate for you relative to the Earth. Not probably what you are thinking in terms of stepping into a time machine but about as close as you could get to it.

Just watch CCTV from a year ago?

We painted one wall of my son’s room navy and put up a vinyl solar system - pic. We also bought some animal astronaut prints off Etsy and framed them and a wool knitted solar system mobile.

Are you telling me that ghost sightings are really time travelers in disguise?

Yes. Not in our lifetimes or that of our greatest grandchildren. But eventually. Does that help?

I have heard similar ideas that if a time machine was created, that it would only be able to travel back to the point it was switched on

So since we have not invented it yet, nobody is travelling back this far

Even if it were possible, it's certainly not going to be like in the movies where you're in a mirror universe and 99% is the same. The world as it exist is the result of so many random events, throw things off even a little and somebody will wipe right instead of left on Tinder and meet someone else and everything diverges from there. If you go back with the intent to "fix" the past it's not going to happen, you're basically erasing your timeline and replacing it with something new.

My actual view is that we are on the verge of extinction and the aliens are watching and waiting so they can come in and grind the planet up for its resources

If wormholes exist, couldn’t we warp to a space far away from earth, look at it, then watch the light just reaching us?

Definitely! My niece put these up as a kid and loved them all her teen years, and more.