InterviewSolution
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InterviewSolution
| 1. |
what is nebula? |
| Answer» In essence, a\xa0nebula\xa0is formed when portions of the interstellar medium undergo gravitational collapse. ... From this, stars may form in the center of the collapsing material, who\'s ultraviolet ionizing radiation\xa0causes\xa0the surrounding gas to become visible at optical wavelengths.\xa0A\xa0nebula\xa0is a giant cloud of dust and gas in space. Some\xa0nebulae\xa0(more than one\xa0nebula) come from the gas and dust thrown out by the explosion of a dying star, such as a supernova. Other\xa0nebulae\xa0are regions where new stars are beginning to form. For this reason, some\xa0nebulae\xa0are called "star nurseries." | |