The Numbers
of the
Sun


The sun is the star around which the entire solar system revolves.It is about 149.6 million kilometres from our planet and its light takes about 8 minutes to reach the earth.The Sun's mass is 333,400 times that of the Earth, while its diameter is 109 times that of our planet.

Its nucleus, a ball of fire with temperatures that reach 19 million degrees Celsius, is a gigantic thermonuclear laboratory where 4 million tons of hydrogen per second are transformed into energy that takes about 30 million years to reach the surface.

The sun during an eclipse

It has been calculated that to exhaust the Sun's energy takes 5 billion years. Its visible surface, the photosphere, has a depth of 3,000 km and its temperature reaches 5,600°C. Observed with the proper instruments, it appears formed by a group of granules which seem to end in enormous fiery columns.

Some of these granules become dark, the famous " sun spots" at times visible to the naked eye, and can reach dimensions of tens of thousands of kilometres. When our star exhausts its stores of hydrogen inside its nucleus, it will begin to swell and grow increasingly brighter, transforming into a gigantic red star.

(S.P.)


See also:
The Sun
The brigthest star

Symbols and Deities

tied to the Sun

Greeting the Sun
10 Yoga positions for one's well-being

Wuriupranili, La Donna-Sole
One of the astronomical myths from northern Australia

Fire

an attribute of the universe


The Ordeal by Fire
Fire and Shamanism

The Cult of Hephaestus
son of Hera and Zeus whose forge made the arms and jewels of Greek Mythology

What is a Volcano

Vesuvius
an important lap in the Grand Tour of intellectuals in the 1700's

Dragon's Heart

a correspondent's recollection of the flames in Kuwait
The Drama of Fires
In 1997, more of the world's tropical forests has burned than in any other epoch recorded by history: so reports the International WWF

Saving Electricity
in the Home: some advice on how to better use electrical energy

The Electric Water-heater:
some advice on how to better use electrical energy

Home Appliances:
advice on how to better use electric energy


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