4 outer planets become large enough to accrete dust and gas forming gas giants or 2.. instabilities in the cooler region of solar system cause a collapse of initial interstellar cloud. Random: Kuiper Belt lie beyond Neptune, close to ecliptic, also where most comets(originate from oort cloud) orbit. denser planets are closer to sun, Saturn can float, in differentiated bodies denser materials lie near core, density=mass/volume. Auroral happens due to solar winds displaced poleward by magnetic field. Deepest depression= Mare Crisium on moon.
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.
The Geology of the Moon Approximately 4.5 billion years ago a large asteroid struck Earth and thus resulted in the Moon. This impact theory suggests that the collision ejected raw materials which in time became the Moon. With the Moon having no significant atmosphere, it can reserve a good record of the impact history. This information can provide geologists with clues to the history of the Earth. The crust of the Moon is composed of a variation of primary elements, including uranium, oxygen, thorium, potassium, silicon, magnesium, iron, titanium, calcium, aluminum and hydrogen.
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
Date: October 21, 2012 Class: Survey of the Sciences Subject: Unit 5. Isotopes and Radiation Radioactivity is the emission of energetic particles or waves from atoms. Natural radiation occurs when unstable nuclei transform to some other nucleus by emitting radiation. As they decay over varying lengths of time (from microseconds to hundreds of thousands of years), they emit energetic particles or waves. An isotope is a form of a chemical element whose atomic nucleus contains a specific number of neutron s, in addition to the number of proton s that uniquely defines the element.
Developing nuclear power use in space and as a propulsion system would be beneficial for space exploration and scientific research by allowing the National Aeronautic Space Administration (NASA) to explore farther and have faster travel times within the solar system and galaxy, by providing substantial power for manned exploration to other planetary bodies, and by allowing space probes and satellites to carry more instruments and operate longer. Nuclear propulsion allows for farther and faster travel times within the solar system and galaxy. The current propulsion system used by all space agencies is chemical propulsion. Chemical propulsion involves igniting millions of pounds of rocket fuel to produce thrust. Chemical propulsion is the only way to get spacecraft from the surface of the planet but once in space, it’s a different story.
Scientists have discovered this through implementing adaptive optics, which are used in astronomical telescopes to pierce through the blur of earth’s atmosphere in order to see the center of each galaxy. A black hole’s formation involves the gravitational collapse of a massive star, which is also known as a supernova explosion. Black holes range in masses from three (average, small black holes) to an incomprehensibly large number (supermassive black holes: the largest in the galaxy). The Milky Way’s supermassive black hole is 3 million solar masses (equivalent to 3 million suns)!
Examples of solid include the gases we breathe oxygen, nitrogen, and others, the helium in balloons and stream. Plasma is a gas that is composed of free-floating ion(atoms stripped of some electron-positively charged) and free electrons (negatively charged).Plasma was discovered William Crookies in 1879. There are many types of plasmas. There is plasma in stars (including our sun), and the solar wind in our in our Solar System is made of plasmas. Boson condensate is a state of matter of a dilute gas of weekly interacting bosons confined in an external potential and cooled to temperatures very near to absolute zero (−459.67°F (−273°C).
Mars is the fourth planet from the sun formed approximately 4.5 billion years ago. The planet Mars is known as the “Red Planet” for obvious reasons. That reason being that the planet glows red. The soil on Mars contains a composition that is very rich in iron. So when the tornado like dust storms take place the dust becomes a canopy.