Age of universe – 13.7 billion
years
Age of the Earth – 4.5 billion
years
Time since extension of
dinosaurs – 65 million years
Earth’s orbit around the Sun –
365.242 days
Average length of a heartbeat –
1 second
Eyes blinking – one hundred of
a second (centisecond)
Lightning strike – one tenth of
a second (decisecond)
Shortest measurable length of
time – one trillionth of a second (picosecond)
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