Red shift occurs when light radiation moves away from an observer. The red shift is seen due to the expansion of the universe and distant light sources (millions of light years away) show red shift corresponding to the rate of increase in their distance from earth. If the universe was very, very hot, as scientists seem to think it was, there must be some remnants of heat left over from the beginning of the universe. In 1965, radio astronomers Arno Panzias and Robert Wilson discovered a 2.725 degree Kelvin Cosmic
As a child, we could not understand the magnificent miracle that takes place for a star to be born. Now we know stars initially form from clouds of dust and gas. The force of gravity makes the dust particles come spiraling in together. As they do, the gravitational energy converts into heat energy and the temperature rises. When the temperature gets high enough, hydrogen nuclei undergo nuclear fusion to form helium nuclei and give out massive amounts of heat and light.
Introduction: A sphere that is of gas and held together by its own gravitational force is known as its most common name, star. Stars are always continually trying to collapse by the force of gravity, this is contracted by the pressure of hot gas/ or radiation in the stars interior. This is called Hydrostatic support. Another thing about stars would be they sometimes come in groups known as clusters. (Dr. Barbara Mattson, 28-Dec-2010) A star cluster or star clouds are groups of stars.
Only the rate at which other objects spin around it. A more massive planet requires that a moon be traveling faster to keep it in orbit. Anything slower would "fall" into the planet. The heavier the planet, the faster the object needs to be to stay in orbit. Here is an example: On Earth, an object needs to be travelling at roughly 18,600 miles per hour to stay in orbit.
The Milky Way Galaxy A spiral galaxy, type Sbc, centered in Sagittarius The Milky Way is the galaxy which is the home of our Solar System together with at least 200 billion other stars (more recent estimates have given numbers around 400 billion) and their planets, and thousands of clusters and nebulae, including at least almost all objects of Messier's catalog which are not galaxies on their own (one might consider two globular clusters as possible exceptions, as probably they are just being, or have recently been, incorporated or imported into our Galaxy from dwarf galaxies which are currently in close encounters with the Milky Way: M54 from SagDEG, and possibly M79 from the Canis Major Dwarf). See our Messier Objects in the Milky Way page, where details are given for each object to which part of our Galaxy it is related. All the objects in the Milky Way Galaxy orbit their common center of mass, called the Galactic Center (see below). As a galaxy, the Milky Way is actually a giant, as its mass is probably between 750 billion and one trillion solar masses, and its diameter is about 100,000 light years. Radio astronomial investigations of the distribution of hydrogen clouds have revealed that the Milky Way is a spiral galaxy of Hubble type Sb or Sc.
Years after his death Physicist Isaac Newton (1642-1727) used these laws to help him develop his law of universal gravitation. The law of Universal Gravitation states that: "every particle in the Universe attracts every other particle in the universe with a force that is directly proportional to the product of their masses and inversely proportional to the square of the distance between them" (Serway 424). This essential means that the force of gravity increases the larger the masses are and decreases the farther away the masses are. The formula to determine the the magnitude of the gravitational force is: Fg = G (M1M2)/R^2 G is the Universal Gravitational Constant, M1 and M2 is the mass of the two objects and R is the distance between them. On Earth the force of gravity causes all objects to accelerate at 9.8m/s^2.
They changed because the molecules of hydrogen and helium were moving so fast that they eventually escaped the Earth. 14. Explain how the greenhouse effect works and how it relates to global warming. The greenhouse effect is when radiation at visible wavelengths passes freely through the atmosphere and is absorbed at the ground. The ground heats up and emits infrared radiation.
There are also four outer objects which are use to serve as the gas giants. Each of outer planets such as Jupiter, Saturn, Uranus, and Neptune were encircled by planetary rings of dust and other particles. Lastly, the farthest of all is that the gray in color sphere which is said to be the Pluto. Let’s observe and look all around us! Looks like a real solar system.
It increases as the Earth’s atmosphere warms which makes it the most feedback mechanisms to the green house effect. Carbon Dioxide is released through natural activities like volcano eruptions and human activities like deforestation and burning of fossil fuels. We have seen that humans have increased their atmospheric CO2 concentration by a third since the Industrial Revolution. Methane is a hydrocarbon gas, which is produced through natural sources and human activities such as decomposition of wastes in landfills and rice cultivation. Methane is a more active green house gas than CO2 but is less abundant in the atmosphere.
Our atmosphere stores gases, known as greenhouse gases, like water vapor, carbon dioxide, methane gas, fluorinated gases, and nitrous oxide. These greenhouse gases trap some of the radiation which warms our planet to allow humans, plants and animals to survive. The dramatic changes to the climate from greenhouse gases is not a natural process which is why the climate changes are such a big issue . Throughout the history of the earth natural climate changes have been known to occur over thousands of years due to the Earth’s orbit and the exposure to the sun. That fact is actually used in arguments for people that believe global warming is a myth.