• Question: h0w many star are in are solar system

    Asked by dantheman to Daniel, Jon, Louise, Sharon, Zoe on 22 Jun 2010 in Categories: .
    • Photo: Sharon Sneddon

      Sharon Sneddon answered on 22 Jun 2010:

      Well, I think that we only have one star in our solar system, which is the sun.

    • Photo: Louise Dash

      Louise Dash answered on 22 Jun 2010:

      Just one – our sun!

      It’s possible to have a solar system of planets orbiting around a binary star system with two suns, although I don’t know if any have actually been observed by astronomers.

    • Photo: Jon Copley

      Jon Copley answered on 22 Jun 2010:

      In our Solar System, there’s just one: the Sun.

      In our galaxy, there are around 100 billion.

      And in the whole visible Universe, there are around 9 x 10^21 (that’s a 9 with 21 zeroes after it!).

      That’s a big number – but it’s still not as big as the number of microbes living in all the oceans (that would a 6 with *28* zeroes after it, which is nearly 10 million times the number of stars in the visible Universe).

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