Astronomy Science Fiction

Iridium flare predictions, ISS, radio amateur and other satellite ephemera. Sun and Moon data. Currently bright comets and minor planets. Whole sky chart, planet data, Solar System chart, Constellation charts. Time and calendar.

Morsels V contains 69 chapters divided into six categories: The Moon, Eclipses and Occultations, Planetary Phenomena and Varia. Additionally there is a cumulative Index for all five volumes along with corrections to Morsels I and IV. ¶ In the first book of this series Roger Sinnott probably has written the best description of the Jean Meeus’ work: “Many celestial cycles are fleeting, destined to fade away after a few iterations as others overlap them or start up afresh. It is a fallacy to think that you can recreate planetary motions for many years by spinning back or fast-forwarding a planetarium projector. Only someone with a profound grasp of astronomical motions and relationships could have produced an authoritative book like this.

Publishers and Booksellers Serving Astronomers Worldwide Since 1973

The past 10 years, however, have seen a stunning revolution in how the world's major observatories produce their almanacs. The Jet Propulsion Laboratory in California and the U.S. Naval Observatory in Washington, D.C., have perfected powerful new machine methods for modeling the motions and interactions of bodies within the solar system. At the same time in Paris, the Bureau des Longitudes has been a beehive of activity aimed at describing these motions analytically, in the form of explicit equations. ¶ Yet until now the fruits of this exciting work have remained mostly out of reach of ordinary people. The details have existed mainly on reels of magnetic tape in a form comprehensible only to the largest brains, human or electronic. But Astronomical Algorithms changes all that. With his special knack for computations of all sorts, the author has made the essentials of these modern techniques available to us all.

Astro Tip: Spell "planets" backward to get the first letter of each planet in order, starting with the closest to the Sun: Saturn Titan Earth Neptune Aurora Luna Pluto

NASA-sponsored online popular science magazine. Our stories profile the latest and most exciting news across the wide and interdisciplinary field of astrobiology - the study of life in the universe. ¶ Established in the year 2000, Astrobiology Magazine now has a vast archive of stories covering a broad array of topics. These stories deal with issues that lie at the heart of many of the “Big Questions” asked by the scientific community, such as: » What are the characteristics of the solar system that lead to the origins of life? » How did life begin and evolve on Earth, and has it evolved elsewhere in the solar system? » How did the solar system evolve to its current diverse state? » What is the impact of climate change on evolving biological systems? » What can we learn from Earth-analogue studies of extreme environments, organisms, and biosignatures? » Is there life elsewhere in the universe?

Immerse yourself in a seamless beautiful environment. WorldWide Telescope (WWT) enables your computer to function as a virtual telescope, bringing together imagery from the best ground and space-based telescopes in the world. Experience narrated guided tours from astronomers and educators featuring interesting places in the sky. A web-based version of WorldWide Telescope is also available. This version enables seamless, guided explorations of the universe from within a web browser on PC and Intel Mac OS X by using the power of Microsoft Silverlight 3.0.

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