ASTR 101 Lecture Notes - Lecture 10: Aurora, Little Ice Age, Tangled
14 Mar 2017
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Understanding the sun: core, radiative zone, convective zone, photosphere (visible surface with sunspots, chromosphere, corona (^ both visible during a total solar eclipse) 2: convection carries energy-photons outward-hot pockets of plasma rise while colder ones sink, the sun experiences differential rotation, different parts rotate at different rates. Solar activity i: sunspots: sunspots: temporary darker regions in the solar photosphere. Solar activity ii: prominences: prominences: when magnetic lines ascend above the surface, they drag with them solar plasma and are seen as bright features extending from the sun"s photosphere in the. Potential radiation hazards for astronauts: coronal mass ejections (cme): sudden massive clouds of plasma and magnetic field ejected arising from the solar corona. They are usually associated with other forms of. 3 solar activity, like solar flares and sunspots, although the process is not yet well understood: cause geomagnetic storms: disturbance of earth"s magnetic field, compressing it on the day side.
