Google Earth Essay Example | Topics and Well Written Essays - 1000 words

Google Earth - Essay Example ese stars were created as a result of collisions of Andromeda with other galaxies or collisions within itself or even destroyed another galaxy during collision whose stars are now strewn in the Halo. (Savage, Villard and Brown). The Owl nebula is a planetary nebula formed by a dying sun-like star. It is located about 2600 light years away in the Ursa Major constellation. Planetary nebulae like the Owl nebula now bear no relation to creation of planetary systems as previously believed. These dying stars, unlike bigger stars, are unable to generate energy through fusion of helium into carbon once their hydrogen fuel has burnt out. As a result their core turns into a â€Å"white dwarf† and only radiates the energy resulting from its collapse. The outer layer is pushed outwards and is energized by ionization by the core. However, such nebulae are short lived and cool down after approximately 10,000 years. The picture of Owl nebula in this version of Google Earth looks like a blue spherical shape with green clouds at its periphery. However, upon searching elsewhere, other pictures were found which, when used with certain filters, show two large eyes similar to an owl’s inside the nebula. A sample is given below. The first Messier Object recorded in Charles Messier’s catalog, M1 or the Crab Nebula, is a supernova remnant that is said to be expanding at 1500 kilometers per second. At its centre, spinning thirty times per second, there is a â€Å"pulsar† which sends out strong gamma and radio waves. The orange outer filaments are composed of hydrogen and are the remains of the star. The inner blue glow is created by electron clouds rotating in the magnetic fields created by the pulsar. (Hester et al). The Whirlpool Galaxy is one of the brightest galaxies visible using amateur telescopes or binoculars. It is a spiral galaxy conspicuous by its two large spiral arms. Scientists believe the formation of these spirals and the birth of stars within them are related to