By Erik Gregersen
The evening sky is definitely teeming with wonders, from megastar clusters and nebulae to quasars. Astronomy is the capacity through which those and different comparable phenomena are found and saw. This stellar source lines the trail of contemporary astronomy, from preliminary efforts to map the heavens to todays use of high-tech telescopes and state-of-the-art units that aid humans delve deeper into celestial discovery.
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Additional resources for Astronomical Observations: Astronomy and the Study of Deep Space (An Explorer's Guide to the Universe)
Circumstantial evidence suggests that a ﬂat representation of the sky, in the form of a planisphere using a stereographic projection, had come into use by the beginning of the present era. This provided the basis for the astrolabe, the earliest remaining examples of which date from the 9th century CE. The open metalwork of the top moving plate (called An Overview | 35 Chinese Tunhuang manuscript, the oldest existing portable star map, excluding astrolabes (c. 940 CE). In the British Museum (MS.
Its rectilinear constellation boundaries preserve the traditional arrangements of the naked-eye stars. The smallest of the constellations, Equuleus (“the Little Horse”) and Crux (“the [Southern] Cross”), nestle against constellations that are more than 10 times larger, Pegasus and Centaurus, respectively. The standard boundaries deﬁne an unambiguous constellation for each star. ) The Decans and Lunar Mansions Two other astronomical reference systems developed independently in early antiquity, the Egyptian decans and the lunar mansions.
In a typical planetarium theatre, programs—commonly called sky shows—are offered to the public on a regular schedule. Show themes may focus on straightforward astronomical and space topics or take up related issues such as the cosmologies of ancient cultures, the extinction of the dinosaurs, or the future of life on Earth. The trend, especially for large audiences and multiple daily shows, is toward total computer automation of the program, combining visual display, cued music and sound effects, and prerecorded narration.
Astronomical Observations: Astronomy and the Study of Deep Space (An Explorer's Guide to the Universe) by Erik Gregersen