- Brakish Water is water that has more salinity than fresh water but not as much as sea water.
- Our climate is changing, largely due to observed increases in human produced carbon pollution.
- Our planet is surrounded by a blanket of gases which keeps the surface of the earth and able to sustain life. This blanket is getting thicker, trapping in heat as we release greenhouse gases by burning fossil fuels for energy.
The Atmosphere:
Global atmospheric concentrations of CO2 have increased markedly as a result of human activities since 1750 and now far exceed pre-industrial values over the past 650,000 years.
- CO2 Percentage of world total CO2 Emissions (2003):
- USA: 22.27%; China: 17.34%; EU: 15.43%; Russia: 6.1%; Japan: 4.8%; India: 4.4%; Australia: 1.3%
- In just 200 years, the amount of CO2 in the atmosphere has increased by 30%.
- Yearly global output of CO2 is equivalent to a mountain one mile high and twelve miles in circumference.
- If two pieces of metal touch in space, they become permanently stuck together.
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If you put Saturn in water it would float:
The density of Saturn is so low that if you were to put it in a giant glass of water it would float. The actual density of Saturn is 0.687 g/cm3 while the density of water is 0.998 g/cm3. At the equator Saturn has a radius of 60,268 ± 4 km – which means you would need an extremely large glass of water to test this out. -
Uranus was originally called George’s Star
When Sir William Herschel discovered Uranus in 1781, he was given the honor of naming it. He chose to name it Georgium Sidus (George’s Star) after his new patron, King George III (Mad King George). This is what he said:
In the fabulous ages of ancient times the appellations of Mercury, Venus, Mars, Jupiter and Saturn were given to the Planets, as being the names of their principal heroes and divinities. In the present more philosophical era it would hardly be allowable to have recourse to the same method and call it Juno, Pallas, Apollo or Minerva, for a name to our new heavenly body. The first consideration of any particular event, or remarkable incident, seems to be its chronology: if in any future age it should be asked, when this last-found Planet was discovered? It would be a very satisfactory answer to say, ‘In the reign of King George the Third.’
Uranus was also the first planet to be discovered with the use of a telescope.
