Around 4.6
The prefix "giga" means 10 to the 9 or 1 billion.
One hundred thousand million years is called one hundred billion years. In scientific terms, this is often expressed as 100 gigayears (Gyr), where "giga" denotes a factor of one billion. This timescale is often used in cosmology and geology to discuss the age of the universe or the Earth.
4.Approximately how old is the Earth?
How old do scientists calculate the Earth
4.Approximately how old is the Earth?
the earth is 874 years old.
earth is about 4 billion years old
Earth is approx. 4,550,000 millennia old. 1 millennium = 1000 years.
In science class I learned that earth is approximately 4.6 billion years old.
Planet Earth is 4.567 billion years old.
you can be an old earth but it won't work
Earth is approximately 4.6 billion years old.