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Interstellar medium - Wikipedia, the free encyclopedia (952 words) |
 | In astronomy, the interstellar medium (or ISM) is the matter (interstellar matter, also abbreviated by ISM) and energy (interstellar radiation field, ISRF) content that exists between the stars within a galaxy. |
| The medium is also responsible for extinction and reddening, the decreasing light intensity and dominant observable wavelengths of a star as the light travels through the medium. |
| The interstellar medium is usually divided into three phases, depending on the temperature of the gas: hot (millions of kelvins), warm (thousands of kelvins), and cold (tens of kelvins). |
| * Interstellar Medium - (Astronomy): Definition (784 words) |
| The interstellar medium is the dust and gas (mostly hydrogen) that are between stars in a galaxy. |
| Interstellar medium: The material between the stars, consisting of gas, dust and cosmic rays (high energy charged particles, moving at nearly the speed of light). |
| The heliopause is the outermost boundary of the solar wind, where the interstellar medium restricts the outward flow of the solar wind and confines it within a magnetic bubble called the heliosphere. |
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