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Effects on ionosphere By : A solar eclipse causes a decrease in the critical frequency of E and F1 layer. The variation of critical frequency is approximately in phase with the optical eclipse. Star Formation By : Mar Star formation is the process by which hydrogen & helium in molecular clouds change into the ball of plasma we call a star. Galaxies By : Mar A galaxy is a gravitationally bound system of stars, interstellar gas and dust, plasma, and (possibly) unseen dark matter. Typical galaxies contain 10 million to one trillion (107 to 1012) stars, all orbiting a common center of gravity. In addition to single stars and a tenuous interstellar medium, most galaxies contain a large number of multiple star systems and star clusters as well as various types of nebulae. Telescopes By : Mar The word "telescope" (from the Greek tele = 'far' and skopein = 'to look or see'; teleskopos = 'far-seeing') usually refers to optical telescopes, but there are telescopes for most of the spectrum of electromagnetic radiation and for other signal types. Stars By : Mar A star is a massive body of plasma in outer space that is currently producing or has produced energy through nuclear fusion. The most familiar and closest star to the Earth is the Sun. Unlike a planet, from which most light is reflected, a star emits light because of its intense heat. Scientifically, stars are defined as self-gravitating spheres of plasma in hydrostatic equilibrium, which generate their own energy through the process of nuclear fusion. Stellar astronomy is the study of stars. Hubble Telescope By : George Royal - One of the most important telescopes in the history of astronomy, the Hubble telescope has allowed observers to peer farther into space than any previous telescope. By moving outside and above the atmosphere of the earth, the Hubble telescope has been able to observe visual data much more clearly than a terrestrial telescope, and it has been able to see much farther into the ultraviolet and infrared spectrums as well, since these spectra are largely absorbed by the earth’s at... Galactic Mystery - Matter - On the Dark Side By : MStrauss Scientific inquiry can be described as a sequence of observations leading to a hypothesis which must be tested by experimentation. The results either validate or invalidate the hypothesis which was under test. Unfortunately, the interpretation of the data sometimes does not elucidate some new truth but rather eclipses our thoughts into a new era of ignorance. Understanding Telemetry By : Leon Chaddock Will telemetry work for your industry? This is an amazing way of measuring. You will find that it is used commonly as a means of measuring things at a distance. Normally, it is used by scientists and engineers who need to measure things that are nowhere near them. The uses of telemetry are varied and many. But, you can see its use everyday. For example, many scientists use it to measure the weather conditions. By sending weather balloons high into the air, they can measur...

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