Friday, May 30, 2008

The universe in a year!

The American astronomer Carl sagan first suggested a “comic calendar” as a way of helping people understand the history of the universe. He put everything into the scale of a calendar year:

The Galaxies are formed over nine months and the earth appears in September. All human history is crowded into the last five minutes of the last day of the year. Recent time has to be devided into seconds and fraction of seconds. So everything that happened over the last 475 years takes place in less than the last second of the last minute of the year.

Date/time

Event

1 Jan (midnight)

Big Bang – Universe forms

15 march

First stars and galaxies form

1 may

Milky way galaxy forms

8 sep

Sun forms

9 sep

Solar system forms

12 sep

Earth forms

13 sep

Moon forms

20 sep

Earth’s atmosphere forms

1 oct

Earliest known life on earth

7 oct

Earliest known fossil

18 dec

First multi cell life formed

19 dec

First fish

21 dec

First land plant: first insect

23 dec

First reptiles

24 dec

First dinosaurs

26 dec

First mammals

27 dec

First birds

28 dec

First flowering plants

28 dec

Dinosaurs extinct

31 dec(11:55 pm)

Homo Sapiens (Humans) appears

2 comments:

अभिनव भारद्वाज said...

So spending one life is not sufficient, i have to take birth more than 7 times (taking avg age as 70 years) to become a significant appearer on calendar at one second level.

Nice scaling

Anonymous said...

its really interesting...!!

give summore information abut it....

keep up d gud work..gud going....gud luck..!!