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Asked by jamesat79 to Jess on 19 Jun 2013.
Question: In space, what is dark matter?
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Jess Bean answered on 19 Jun 2013:
Dark matter is a type of matter that scientists have thought up to make up sense of the universe. A problem they have found is that the weight of all the matter in the universe (i.e. planets and stars) does not come close to the weight the universe should be.
They think dark matter is another ‘thing’ that makes up for the missing weight – it is invisible and thought to make up around 85% of the matter in the universe!
Comments
jamesat79 commented on :
Thanks! Love the explanation! I didn’t know that it takes up most of the Universe! 🙂
Steve commented on :
Actually dark matter is thought to make up about 25% of the universe, 5% is what we called ordinary matter (stars and gas clouds mostly). The other 70% is an even more mysterious thing called dark energy.