What are the types of nebulae | Earth, Solar System and Universe.

One of the most notable aspects of the nebulae is its variety of forms and structures. Thanks to modern telescopes and the use of computers, have been able to be detailed digital photos which, through suitable software can be colored for spectacular images.
Planetary nebulae
Planetary nebulae are similar to planets when they are observed through a telescope. In reality they are layers of material that are detached from a star evolved from mass media, going from red giant to white dwarf.
The Nebula's ring, in the constellation of Lyra, is a typical planet that has a period of rotation of 132.900 years and a mass of about 14 times the mass of the Sun. Thousands of planetary have been discovered in the milky way.
Most spectacular, but less in number, are the remnants of supernovas, cuta most significant representative is the nebula of the crab, in Taurus, which vanishes at a rate of 0.4% per year. Such nebulae are intense radiofuentes, because of the explosion that formed them and losrestos of pulsars in that the stars became.
Herbig-Haro (HH objects) objects
Herbig-Haro objects, which owe their name to the Mexican astronomer Guillermo Haro and the American George Herbig, are small bright nebulae that are within very dense interstellar clouds
They are probably produce jets of gas expelled by stars in formation. Molecular clouds are, moreover, extremely large, many light years wide, with an undefined profile and a Dim and Misty appearance.
Herbig-Haro objects can be studied in the infrared. These objects vary in size and brightness in a few years. They are regions of active star formation. It is believed that these nebulae correspond to flows of high-speed gas ejected by young stars hit interstellar clouds. The study of Herbig-Haro objects helps to understand the details of how stars are formed.
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