Ten Facts about Space!
(1) One million Earths could fit inside the sun - and the sun
is considered an average-size star.
(2) For years it was believed that Earth was the only planet
in our solar system with liquid water. More recently, NASA revealed its
strongest evidence yet that there is intermittent running water on Mars,
too!
(3) Comets are leftovers from the creation
of our solar system about 4.5 billion years ago - they consist of sand, ice and
carbon dioxide.
(4) You wouldn't be able to walk on Jupiter,
Saturn, Uranus or Neptune because they have no solid surface!
(6) Space
junk is any human-made object
orbiting Earth that no longer serves a useful purpose. Scientists estimate
there are about 500,000 pieces of space junk today, including fragments from
rockets and satellites, and everyday items like spanners dropped during
construction of the International Space Station!
(7) An asteroid about the size of a car
enters Earth’s atmosphere roughly once a year - but it burns up before it
reaches us. Phew!
(8) The highest mountain known to man is on
an asteroid called Vesta. Measuring a whopping 22km in height, it is three
times as tall as Mount Everest!
(9) There are more stars in the universe
than grains of sand on all the beaches on Earth. That's at least a billion
trillion!
(10) The sunset on Mars appears blue
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