Galileo Galileithe discoverer of Io The first reported observation of Io was made by Galileo Galilei on 7 January using a 20x-power, refracting telescope at the University of Padua. However, in that observation, Galileo could not separate Io and Europa due to the low power of his telescope, so the two were recorded as a single point of light.
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Our home planet, the Earth, is the largest of the terrestrial planets with a diameter of 12, kilometers and a mass of 5. Although the atmosphere makes up less than 0. The Earth has the right surface temperature and atmospheric pressure for life and liquid water on the surface to exist.
It is the only place that has either of these things. Some water is also in the form of water vapor and ice. The total amount of water on the Earth in all phases is about 0.
The Earth is also a very beautiful place. Free Oxygen Compared to the other planets, the Earth has a bizarre atmosphere!
The presence of free oxygen O2 is very unusual because oxygen loves to chemically react with other atoms and molecules. The oxygen in our atmosphere would soon disappear within about years if photosynthesizing organisms like plants and cyanobacteria blue-green algae did not regenerate the oxygen.
In the process of photosynthesis, plants take in water, carbon dioxide, and sunlight and convert them to carbohydrates and oxygen. The oxygen is given off as a waste product and the carbohydrates are stored as a source of energy to be used later by the plants.
Since life keeps oxygen in the form of O2 and its fragile cousin, ozone O3 around, absorption lines of these two molecules in the spectrum of a planet beyond our solar system would be one signature of life on that planet.
Ozone has a spectral signature in the infraredthe spectral band where a search for bio-markers would take place. This natural greenhouse effect makes it warm enough on the surface for liquid water to exist.
Besides making life possiblethe liquid water also helps to keep the amount of atmospheric carbon dioxide from getting too high. Carbon dioxide dissolves in liquid water to form "carbonic acid" soda water.
Some of the dissolved carbon dioxide will combine with minerals in the water and settle to the ocean floor to form limestone. A similar process happens with the weathering process.
Carbon dioxide dissolved in rainwater and in snowmelt combines with minerals eroded away from the mountains to carry carbonates down to the oceans. The amount of atmospheric carbon dioxide is also kept in check by biological processes.
Most of the carbon dioxide is released back into the atmosphere when plants decay or are burned.
Some organic material plants and bacteria is deposited in marine sediments. The organic material in the marine sediments may be converted to oil, natural gas, or coal if the temperature and pressure conditions underground are right.
This locks up the carbon dioxide until these fossil fuels are extracted and burned. Burning them releases the carbon dioxide back into the atmosphere.Oct 30, · By Javier. Here, for the first time in public, is Javier’s entire collection of massive, “consensus” climate science prediction failures.
This collection is carefully selected from only academics or high-ranking officials, as reported in the press or scientific journals. Io (Jupiter I) is the innermost of the four Galilean moons of the planet attheheels.com is the fourth-largest moon, has the highest density of all the moons, and has the least amount of water of any known astronomical object in the Solar attheheels.com was discovered in and was named after the mythological character Io, a priestess of Hera who became one of Zeus' lovers.
Context matters. The layman can’t evaluate projections of temperatures for the year They can evaluate projections such as “snow is a thing of the past” and use of hurricanes and polar bears as symbols, both of which failed to do what was requested of them by the projections.
A new study suggests temperatures across Antarctica have been falling for the last 1, years. This natural climate change would have been a threat to baby penguins, forcing them to walk much further across sea-ice for food.(Looks like it was even worse for polar bears).
Carbon dioxide (CO 2) is an important trace gas in Earth's attheheels.com is an integral part of the carbon cycle, a biogeochemical cycle in which carbon is exchanged between the Earth's oceans, soil, rocks and the biosphere.
Plants and other photoautotrophs use solar energy to produce carbohydrate from atmospheric carbon dioxide and water by photosynthesis. Earth Chapter index in this window — Chapter index in separate window-- Please support this website This material (including images) is copyrighted!.See my copyright notice for fair use practices.
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