Artist’s concept of Epsilon Eridani, located about 10 light-years away in the constellation Eridanus. It is visible in the night skies with the naked eye. The system's inner asteroid belt appears as the yellowish ring around the star, while the outer asteroid belt is in the foreground. Credit: NASA/JPL-Caltech Most Astronomy [...]

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  • Stellar evolution
    Artist's depiction of the life cycle of a Sun-like star, ... Complete chart of stellar evolution. Stellar evolution is the process by which a star changes over the course of time. ... whose centrifugal force due to rotation partially counteracts the weight of their matter).
    03/19/2019 - 11:25 am | View Website
  • (PDF) Human models of aging and longevity
    Human models of aging and longevity. ... Under an evolutionary perspective, antigens are the cause of a persistent life-long antigenic stress, responsible for the accumulation of effector CD8 ...
    03/19/2019 - 10:14 am | View Website
  • Properties of the Sun
    The rotation of the sun is made evident by the sunspots that cross the solar disk in about two weeks, then disappear, and then reappear at the opposite limb (or curved edge) two weeks later. Observations of the sun reveal that different parts of the Sun rotate at different speeds.
    03/11/2019 - 11:13 am | View Website
  • (PDF) Lithium abundance as a boundary condition for age ...
    Lithium abundance as a boundary condition for age and mass determination of solar twin stars. ... younger than the Sun and with a rotation period shorter than solar. It is difficult to obtain ...
    03/3/2019 - 5:29 am | View Website
  • ASTR Horizons Review Q's CH 12-14 & 20 Flashcards | Quizlet
    Start studying ASTR Horizons Review Q's CH 12-14 & 20. Learn vocabulary, terms, and more with flashcards, games, and other study tools. ... Describe the kinds of observations you would make to study the galactic nucleus? ... How does the peculiar rotation of NGC 5128 help explain the origin of this active galaxy?
    03/2/2019 - 10:20 pm | View Website
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