A billion years or giga-annum (109 years) is a unit of time on the petasecond scale, more precisely equal to 3.16×1016 seconds (or simply 1,000,000,000 years).

How large exactly is a billion?

one thousand million A billion is a number with two distinct definitions: 1,000,000,000, i.e. one thousand million, or 109 (ten to the ninth power), as defined on the short scale. This is now the meaning in all English dialects. 1,000,000,000,000, i.e. one million million, or 1012 (ten to the twelfth power), as defined on the long scale.

What does G years stand for?

A students time in graduate study is measured by G-Year, which refers to the number of years of graduate study. For example, a student in their first year is a G1, in their second year a G2, and so on.

What was on Earth 1 billion years ago?

1,000,000,000 – One Billion Years Ago o The Earths landmasses form one huge supercontinent, Rodinia. Image by Zina Deretsky used courtesy of the National Science Foundation. Adapted from image released into the public domain by its author, Tim Vickers at the wikipedia project.

What is 1000000000000000000000000 called?

septillion Some Very Big, and Very Small NumbersNameThe NumberSymbolseptillion1,000,000,000,000,000,000,000,000Ysextillion1,000,000,000,000,000,000,000Zquintillion1,000,000,000,000,000,000Equadrillion1,000,000,000,000,000P6 more rows

How much is a zillion?

Zillion may represent ANY very large power of a thousand, certainly larger than a trillion, and maybe even a vigintillion or centillion ! Just as a million had spawned the Chuquet illions, the zillion also had many follow ups.

What is a million years called?

A million years is called a megaannum, which is often abbreviated Ma. This term comes from the word parts mega which means huge and annum

Does G stand for good?

What does G mean? G stands for Good.

What was the 2nd animal on Earth?

jellyfish The second animal on earth would be the jellyfish, it existed even 505 million years ago. New fossil evidence of jellyfish goes back over half a billion years.

What is a number with 1000 zeros called?

Thousand: 1000 (3 zeros) Ten thousand 10,000 (4 zeros) Hundred thousand 100,000 (5 zeros) Million 1,000,000 (6 zeros) Billion 1,000,000,000 (9 zeros)

What is the number 1000000000000000000000000?

Some Very Big, and Very Small NumbersNameThe NumberSymbolseptillion1,000,000,000,000,000,000,000,000Ysextillion1,000,000,000,000,000,000,000Zquintillion1,000,000,000,000,000,000Equadrillion1,000,000,000,000,000P6 more rows

Is a jillion?

A jillion is an enormous number of something. The word is modeled on actual numbers like million and billion, so it almost sounds like a real quantity. But like zillion, jillion is imprecise. Its origin is vague too, described as an arbitrary coinage first used around 1940.

What is 100000000 years called?

A million years is called a megaannum, which is often abbreviated Ma.

What does it mean if a guy calls a girl G?

short for “gangster” or “gangsta.” Used in greeting to a friend or associate. See also the slang word “b”.

What is G slang for?

GHB and GBL are also known as: GBH, Grievous bodily harm, Gina, G or liquid ecstasy. GHB (Gamma Hydroxy Butyrate) and GBL (Gamma Butyrolactone) are chems used in dance clubs or during sex.

How old is the human race on Earth?

The first human ancestors appeared between five million and seven million years ago, probably when some apelike creatures in Africa began to walk habitually on two legs. They were flaking crude stone tools by 2.5 million years ago. Then some of them spread from Africa into Asia and Europe after two million years ago.