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 Hiya:
Just how much do scientist and scholars really know about our universe so far?????
Let`s be carefull about `fact`s", we don`t want to make mistakes, now do we?
Distance from earth to sun = 149,597,870.691 kilometres. http://neo.jpl.nasa.gov/glossary/au.html
Speed of Light = 299,792,458 m/s
Distance around the earth at the equator = 40,074 kilometres.http://www.newton.dep.anl.gov/askasci/gen99/gen99027.htm
Light travels 7.480972 around the earth in one second
The closest star to the sun is Proxima Centauri, but its brighter neighbour Alpha Centauri, a double star, is so close to the first one mentioned, that it's nearly always mistaken for the Proxima Centauri, and it's data, is practically always mistaken for the second one. It is about 4 light years distance, or about 3.8x10 16 m.
38 000 trillion metres or 38 trillion kilometres
http://hyperphysics.phy-astr.gsu.edu/hbase/starlog/strclos.html
1000 million = 1 billion
10 12 or a million times a million = 1 trillion (Macquarie Dictionary)
Just one solar system (like our Milkie Way, has as many as 1` trillion suns. SO, this is something to 'ponder' withing our brains, to at least 'begin' to understand a little.
Laters, Lucy
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