How big is the Earth?!

[Mathew]

Do you think space ever ends?

This is a question we did a lot on during GCSE Physics last year. We spoke about three different theories.

One being that space is constantly expanding, it will just keep going forever and ever.
Another is that it will get to a certain point and just stop.

The final one which fascinates me the most (and what I believe is the most likely) is that space will keep expanding until a certain point and then start retracting again. When space retracts, everything will crash into each other and there will be another Big Bang. From there, life will be destroyed and whole story will start again. Organisms will grow, bacteria will be produced, animals will evolve and eventually, humans will come along again. Who knows? We may not be the first humans, we could be part of a massive cycle lasting trillions of years and eventually, there will be a whole new set coming along, ready to discover everything that we have.

Absolutely brilliant topic.

[Arron]

hmm i dont know much about the galaxy but i know for sure its amazing. for those who think space ends somewhere, well whats on the other side? or is space just in a MASSIVE bubble which contains stars and stuff ;D

as for the video, wow... 1101 years was it to fly round the star once on a commercial plane? it's actually really frightening..

[N!ck]

There is nothing "outside" space. The universe isn't expanding in to anything. It's space itself that's expanding.

[Phil]

hmm i dont know much about the galaxy but i know for sure its amazing. for those who think space ends somewhere, well whats on the other side? or is space just in a MASSIVE bubble which contains stars and stuff ;D

as for the video, wow... 1101 years was it to fly round the star once on a commercial plane? it's actually really frightening..

It says 1100 years but at the plane traveling 900km/h I think but I'm pretty sure they travel at around 450km/h so it would actually take 2200?

[kk.]

It says 1100 years but at the plane traveling 900km/h I think but I'm pretty sure they travel at around 450km/h so it would actually take 2200?

planes go around 550mph, so multiply that by 1.6 and you get 880km/h. But it would take even less time in a concord!

[Phil]

I was always pretty interested in space but this thread has sent me wild lmao.