Terasecond and longer facts for kids

Kids Encyclopedia Facts

A terasecond (symbol: Ts) is one trillion seconds. That is about 31,700 years. It can be written as 1012 seconds.

Here is a list of time spans longer than 1 terasecond:

  • 1015 seconds = 1 petasecond = 31.7 million years
  • 1018 seconds = 1 exasecond = 31.7 billion years
  • 1021 seconds = 1 zettasecond = 31.7 trillion years
  • 1024 seconds = 1 yottasecond = 31.7 quadrillion years

Teraseconds

Here are some examples of events that take this long:

Petaseconds

  • 34 million years -- time since the evolution of the cat
  • 34.7 million years -- half-life of niobium-92
  • 49 million years -- time since the whales returned to the water
  • 60 million years -- time since the evolution of the first primates.
  • 135 million years -- time since end of Jurassic and beginning of Cretaceous period
  • 250 million years -- Galactic year - an orbit around the center of the Milky way of our Sun and the Solar system
  • 251.4 million years -- time since the Permian mass extinction
  • 280 million years -- time since end of Carboniferous and beginning of Permian Period.
  • 390 million years - first fishapods
  • 575 million years - age of the oldest animal fossils
  • 580 million years - time since the end of a possible Snowball Earth ice age
  • 703.8 million years - half-life of uranium-235
  • 750 million years - time since the beginning of a possible ice age
  • 1277 million years - half-life of potassium-40
  • 1.8-2.1 billion years - age of the earliest eukaryotes
  • 2.3 billion years - time since the first known ice age
  • 3.5 to 3.8 billion years - age of oldest records of life: stromatolites and cyanobacteria
  • 4.468 billion years - half-life of uranium-238
  • 4.5 billion years - age of the Earth
  • 13.7 ± 0.2 billion years (4e17 seconds) - age of the universe according to the Big Bang theory
  • 20 billion years - time until the end of the universe in the Big Rip scenario

Exaseconds

  • 100 billion (1011) years -- If the universe is closed, the lifetime of the universe
  • Some radioisotopes have very long half-lives:
  • (1.4 ± 0.4) × 1017 years – vanadium-50
  • (1.9 ± 0.2) × 1019 years – bismuth-209
  • (3.1 ± 0.4) × 1019 years – cadmium-116
  • (2.2 ± 0.3) × 1024 years – tellurium-128

Terasecond and longer Facts for Kids. Kiddle Encyclopedia.