White tree frogs have such big appetites that they sometimes eat rats.
Seeing double at night?
Seeing double at night? Looking up at the stars with the naked eye gives
the impression that each star is a single body, like our Sun.
However, in reality at least half of the stars in the sky are made
up of two stars revolving together. These are called
‘binaries’ and they orbit together around a common
centre of mass. 25 JULY 2000
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