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Observing the Origins of the Cosmos | Solar System and Universe


Since its origins, the human species has observed the sky. First directly, and then with increasingly powerful instruments.

Ancient civilizations grouped the stars forming figures. Our constellations were invented in the Eastern Mediterranean about 2,500 years ago. Represent animals and myths of place and time. People believed that the heavenly bodies influenced the lives of kings and subjects. The study of the stars was mixed with superstitions and rituals familiar. Aries, Taurus, Gemini, Cancer, Leo, Virgo, Libra , Scorpio, Sagittarius, Capricorn, Aquarius and Pisces.

In the early seventeenth century, the telescope was invented. First lenses, mirrors after, also combinations of both were used. There are currently very high resolution telescopes such as the VLT consists of four synchronized telescopes.

The Hubble Space Telescope (HST), located in orbit, capture and send images and data without the distortion caused by the atmosphere.

Radio telescopes detect radiation very different wavelengths. They work in groups using a technique called interferometry.

Photography, computers, communications and, in general, the technical advances of recent years have helped greatly to astronomy.

Thanks to the spectra produced by the decomposition of light, we can learn detailed information about the chemical composition of a object. It also applies to the Universe.

A recent discovery, gravitational lenses, take advantage of the fact that objects with mass can deflect light rays. If a group of bodies located with appropriate settings, acts like a lens and displays potent in the center, distant objects that we could not see.

Translated from the website: http://www.astromia.com/


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