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单词 Ulysses
释义
Ulysses

Astronomy
  • A joint ESA–NASA spacecraft launched in 1990 October to study the solar wind, in particular from the unexplored regions around the Sun’s poles. The spacecraft passed Jupiter in 1992 February, which swung it on to a trajectory that took it over the Sun’s poles. Ulysses passed through the solar wind dominated by the south polar coronal hole, measuring wind speeds in the region of 700 km/s, in 1994 June–November, and the corresponding region over the Sun’s north pole in 1995 June–September. Ulysses then embarked on a second orbit of the Sun, overflying the south pole for a second time from 2000 September to 2001 January and the north pole in 2001 September–December. Ulysses ceased operation in 2009 June.

    http://sci.esa.int/ulysses ESA mission website.


Space Exploration
  • The first space probe to study the environment of space above and below the poles of the Sun. The mission, a joint project by NASA and the European Space Agency, was launched in 1990 by a US space shuttle. In February 1992, the gravity of Jupiter swung Ulysses on an unprecedented path that looped it first under the Sun's south pole in 1994 and then over its north pole in 1995 to study the Sun and solar wind at latitudes not observable from the Earth. Ulysses continued orbiting over the Sun’s poles until the mission completed in 2009. Its data have given scientists their first look at the variable effect that the Sun has on the space around it, and treasure troves of data on solar wind, interstellar dust, and the three-dimensional character of solar radiation.


Geology and Earth Sciences
  • A NASA and ESA probe, launched in 1990, carrying the International Solar Polar Mission to fly over the poles of the Sun, which cannot be seen from Earth, and to study the solar wind. It travelled first to Jupiter for a gravity assist. The mission ended on 30 June 2009.

    https://solarsystem.nasa.gov/missions/ulysses/in-depth/ Ulysses.


Philosophy
  • In Odyssey 12, 39. 200, Homer relates how Ulysses has himself tied to the mast in order that he may hear the sirens’ song, yet not follow all other sailors who, having done so, are driven to follow the sound, shipwreck, and perish. The myth shows that it may be advantageous not to be free, and so is a focus for debates over paternalism, and the relation between higher and lower inclinations, or reason and desire (for a spectacular example, see Democritus). Although sirens are popularly depicted as floppy Victorian nymphs it should be remembered that in early representations of the legend they are more formidable, sometimes depicted as birds with women’s heads, with claws like vultures. They are representatives of alienating, god-like powers whose force we should know but against which we must be forearmed.


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