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[6] [73] Willy Ley's 1937 short story "At the Perihelion" involves a close approach to the Sun as part of an escape from Mars, [4] [5] [74] and Charles L. Harness's 1949 novel The Paradox Men (a.k.a. Flight into Yesterday) is a space opera that climaxes with a swordfight atop a space station on the surface of the Sun. [4] [5] [75] [76] In Ray ...
The antumbra (from the Latin ante "before" and umbra "shadow") is the region from which the occluding body appears entirely within the disc of the light source. An observer in this region experiences an annular eclipse, in which a bright ring is visible around the eclipsing body. If the observer moves closer to the light source, the apparent ...
The core is the only region of the Sun that produces an appreciable amount of thermal energy through fusion; 99% of the Sun's power is generated in the innermost 24% of its radius, and almost no fusion occurs beyond 30% of the radius. The rest of the Sun is heated by this energy as it is transferred outward through many successive layers ...
Thus, the Sun occupies 0.00001% (1 part in 10 7) of the volume of a sphere with a radius the size of Earth's orbit, whereas Earth's volume is roughly 1 millionth (10 −6) that of the Sun. Jupiter, the largest planet, is 5.2 AU from the Sun and has a radius of 71,000 km (0.00047 AU; 44,000 mi), whereas the most distant planet, Neptune, is 30 AU ...
The umbra is the darkest region of a sunspot and is where the magnetic field is strongest and approximately vertical, or normal, to the Sun's surface, or photosphere. The umbra may be surrounded completely or only partially by a brighter region known as the penumbra. [ 23 ]
A 17th-century English Baroque school using extended conceit, often (though not always) about religion [18] [19] John Donne, George Herbert, Andrew Marvell: Cavalier Poets: 17th-century English Baroque royalist poets, writing primarily about courtly love, called Sons of Ben (after Ben Jonson) [20] Richard Lovelace, William Davenant: Euphuism
Hale's law states that bipolar active regions have the following properties depending on whether the region is located in the northern or southern solar hemisphere: [2] In the same hemisphere, regions tend to have the same leading polarity. In the opposite hemisphere, regions tend to have the opposite leading polarity.
Sun path, sometimes also called day arc, refers to the daily (sunrise to sunset) and seasonal arc-like path that the Sun appears to follow across the sky as the Earth rotates and orbits the Sun. The Sun's path affects the length of daytime experienced and amount of daylight received along a certain latitude during a given season.