I would like to point out that there are no links to pages because this is knowledge I've gained over many years and is easily accessible through google. I do not claim to have discovered any of this myself - I don't even have a telescope.
So astronauts live in space for a long time in one go because its pretty expensive to keep flying people too and from space stations. It is generally assumed that what they experience is zero gravity. This is actually a common misconception. What they experience is constant falling while orbiting the earth which creates the appearance of zero gravity. There is a strong enough pull from the earth to pull on the station which keeps it in orbit. The reason it doesn't fall down is because it is moving sideways really fast around us. This is why it looks like stuff if floating like a ball of water, all that's really happening is they are all falling really quickly in the same direction.
That's something cool to look up on YouTube actually, astronauts drinking water. Its looks really strange.
Scientists for some reason decided to work out what space smells like. Astronauts have have described space to smell like a nice streak or warm metal like from welders. The centre of our solar system apparently smells like raspberries. They worked this out by analysing the different wave lengths of radiation and matched them up to known ones on earth. As cool as this is I don't really understand why they needed to know, when you're up there you'll be in a space suit smelling some oxygen. I guess it's still something new to know.
So what colour is space? Depending on who you ask it's black, deep blue or deep purple. There is an 'official' colour according to scientists but I've always thought of colours to be quite a subjective matter. The reason it's so dark is because the light being shot out into space but all light sources hasn't found anything to reflect back on. Or it's so far away than no light is managing to get back to us. The sky looks blue even though we are looking out into space because the light refracts on the particles of the atmosphere and appears blue.
It's not just planets that orbit the sun. Comets such as Halley's Comet orbit the sun on a very large elliptical orbit which is why every now and then we will see it cross the sky. And by every now and then I meant every 75 years or so, none of us will be lucky enough to see it twice in one life unless we live to be really old thanks to science.
Space is roughly -270 degrees Celsius. Giving some leeway for different spots of different levels or background radiation. It's pretty chilly though, to say the least.
Some people say that life on earth came from deep space. From some far of planet that was destroyed by some event which sent a meteor at the earth with bacteria still living on it. This then made the platform to which the rest of existence spring boarded off which has lead to this very moment, including you reading this post. It's an interesting idea, but the chances of that are probably about as slim as life existing in the first place. Bacteria are known as extremophiles as they can live in extreme conditions such as the cold of space or the heat of a meteor burning up on entry to an atmosphere. So it's a possible idea as they could've survived in space but surely we would have found other evidence of this event.
The sun will eventually destroy our universe. In hundreds of millions of years so calm down. It'll run out of fuel and this'll cause it to expand to such a size it will go om nom nom with all of the planets nearby.
For anyone who has watched a rocket launch, there is a tonne of smoke. Funny thing is that most of that is just water vapour, rocket launches are virtually emission free. I think this is a great argument for rocket cars.
Space rockets cost over $1 billion dollars, the average cost of a launch is $450 million.
Astronauts do not keep item the same as here on earth because they will not experience a day and night cycle. They use something called MET - Mission Elapsed Time which begins from take off and ends on touch down.
I think I will leave it here because I'm not chucking any pictures in due to copyright, if I upload them myself then I have no worries. Plus google image search is a thing if you would like some pictures. Thanks for reading, that's my nerd out done for the day. Blog you later.
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