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Asked by emilyshearsmith to Alan, Deepak, Francesca, Lilly, Nick on 10 Mar 2014.
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Deepak Kar answered on 10 Mar 2014:
I am thinking that you are talking about stars other than Sun, right? Of course without sun there would be no solar system, no planet earth, no us!
I am not sure if the other stars are directly helping us now. But it is entirely possible that all of them (along with our sun) were created by the same process (big bang).
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Alan Fitzsimmons answered on 10 Mar 2014:
Yes and yes. Our Sun is a star, and without it we would not be able to survive – our planet would be a frozen ball of rock and ice.
Just as importantly, almost all of the chemical elements were made inside stars. So without stars there would be no oxygen or carbon, and without those types of atoms life could not not exist.
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Francesca Day answered on 10 Mar 2014:
Well the Sun is a star, and if it wasn’t there it would be much too cold for humans to live on Earth! Also, all of the carbon atoms in your body were created in a star, so without stars we wouldn’t be able to exist!
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Nick Wright answered on 11 Mar 2014:
We need the Sun! The sun provides us with all the heat and light that we need to survive, without the sun we would soon be too cold to survive, so that’s very important.
The other stars are less useful to us at the moment. But we needed some of those stars to get where we are today. The majority of the atoms in your body were made in the centers of those stars and then released when the stars died – so without those stars you could not be here!
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Lilian Hunt answered on 13 Mar 2014:
The others are experts but I know at least one star that we desperately need: the sun! And although I don’t know how much they’re used for navigation these day, sailors used to rely on them to find their way around the world too.
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