If there is no oxygen in space….
rockets move not by “burning” but by expelling part of their mass at high velocity in the form of fuel. best way to do this at high velocity (with current technology) is to burn it; half of the fuel load is liquid oxygen, so that explains where that comes from. Other propulsion systems may be available…
if you chuck some mass in one direction, you will move in the opposite direction. try it next time you go skatingPosted 4 years ago
if you chuck some mass in one direction, you will move in the opposite direction. try it next time you go skating
I was fine skating when I had something to push against but when I tried it in a vacuum in zero gravity, I got nowhere.
(I know what the answer is, just like I suspect most people participating do to all the questions above), I’m just having a laugh.Posted 4 years ago
The Sun does not “burn”, like we think of logs in a fire or paper burning. The Sun glows because it is a very big ball of gas,and a process called nuclear fusion is taking place in its core. Nuclear fusion occurs when one proton smashes into another proton so hard that they stick together…and release some energy as well. This energy then heats up the other materials (other protons and electrons and such) nearby. This heating eventually grows out from the center (or core) of the star to the outside, finally leaving the surface and radiating out into space to be the heat and light we know stars emit.
People, including scientists, sometimes say that the Sun “burns hydrogen” to make it glow. But that is just a figure of speech. Hydrogen really doesn’t burn, it fuses, into helium. So no oxygen is required!
Now I can sleep. Nite all. XPosted 4 years agoKevevsMember
heavy like one of those big heavy bowling balls when you go bowling. the one you pick up and break yer fingers. That kind of heavy? Like, proper heavy?? so you go for the manageable purple one, that’s like Earth, compared to the heavy one’s Sun. I get it now, Space is like bowling. I bet they use this analogy next time Kate Humble fronts a sciency spacey programme!Posted 4 years agoStonerSubscriber
In Space, you can Hunt for Red October.*
That ionized plasma is created in an area of the engine with a highly positive charge, and the ions are thus attracted to the highly negative charge of the engine’s “accelerator grid,” which spits them out into space – or, in NEXT’s case, the test chamber – at speeds of up to 90,000 mph.
* laboured caterpillar drive reference….Posted 4 years agoFrankensteinMember
Sun (yellow dwarf star) is undergoing a fusion reaction where Hydrogen is converted to Helium.
This reaction releases a lot of heat and light (E.M.) energy.
The Earth has gravity which stops some of the gas escaping into space.
Source: My year 7 plenary in their own words (bottom group science)Posted 4 years agoFrankensteinMember
I would but that’s my day to ride!
Now marking…hoping to ride midday…
O.P. google “fusion reactor” where scientists are trying to build a fusion reactor that gives off more energy than we put in to stabilise it. (To heat water and turn the turbines and mega watts of electrickery! 😉Posted 4 years ago
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