Part of the Patrick Moore's Practical Astronomy Series book series (PATRICKMOORE)
Friday, May 1
This date is a rather special one in history. In 1543 on this date, Copernicus published and distributed the “ The Little Commentary See Copernicus,” which described his heliocentric beliefs. In 1949, Gerard Kuiper discovered Nereid, a 150-kilometer-wide satellite of Neptune. It’s so distant from the planet that it requires almost one Earth year (360 days) to complete an orbit! At magnitude 18.7, Nereid is beyond the detection point of most average telescopes but can be “seen” using long exposure Charge Couple Device (CCD) image stacking devices. Other sights that can’t be seen are the Van Allen Radiation Belts of our Earth, the discovery of which was announced in 1958 in this day’s copy of the Washington Evening Star.Thanks to James A. Van Allen ’s use of the data from the Explorer I and Pioneer III space probes, we know that Earth’s magnetosphere contains concentrations of electrically charged particles. Say Happy Birthday to American astronaut M. Scott Carpenter ,...
KeywordsGlobular Cluster Lunar Surface Spiral Galaxy Hubble Space Telescope Large Scope
These keywords were added by machine and not by the authors. This process is experimental and the keywords may be updated as the learning algorithm improves.
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