Freeware: Astronomy

	300 Science Quizzes  License: Freeware
	300 Science Quizzes: 150 Capital city quizzes, 120 Chemistry and Periodic Table quizzes, 20 Astronomy picture-quizzes and 10 questions about the speed of light for middle and high school students. Author: Alwyn Botha| Date: 01-10-2001 | Size: 236 KB
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	Planet's Visibility  License: Freeware
	Planet’s Visibility presents a 3-color graph that shows when a planet, the moon or the sun is visible during any year from 3000 BC to AD 6000 at any location on the earth. The vertical axis marks the months of the year, the horizontal axis marks the hours of the day. The three colors create a contour map effect that indicates the visibility. In addition times of solar and lunar eclipses are marked and the dates of heliacal phenomena are computed. Author: alcyone software| Date: 19-10-2002 | Size: 5139 KB
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	Alcyone Ephemeris  License: Freeware
	Alcyone Ephemeris is an accurate and fast astronomial ephemeris calculator covering the period 3000 BC to AD 3500. It calculates heliocentric, geocentric, and topocentric positions of the Sun (Earth), Moon, and planets in ecliptical, equatorial, and horizontal coordinates, with optional corrections for parallax and refraction; rectangular coordinates, velocity, acceleration, apparent diameter, magnitude, phase, lunar libration, orbital elements, differences for all of these, and more. In addition Alcyone Ephemeris offers a wealth of functionality: plotting ephemeris data, searching for specific values, scripting to write programs for more complex computations, saving in the as HTML files to export output to spreadsheets, word processors and web pages, and printing. Author: alcyone software| Date: 23-09-2004 | Size: 8055 KB
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	Planetarium  License: Freeware
	See the brightest 2500 stars, all 88 constellations, all nine planets and the moonphase from 4713BC to 9999 AD from any location on earth. Click star on screen for detailed information. Geocentric and heliocentric views also available. Define your own five locations for quick switch. Tiny program, but great planetarium, especially for teachers and students. Print todays night sky ! Nice visuals, smooth animation, simple controls, good planet data. This is the Windows version of the classic Planetarium software of 1992. The DOS version didn't work with todays fast computer anymore. But it was downloaded for 13 years, and one of the first of its kind, especially the animantions and colors. If you need a quick overview when and where a planet, star is, this is your perfect joice. And it is really for free, no registration required. So try it and see yourself ! Author: Asynx Software Inc.| Date: 09-12-2005 | Size: 614 KB
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	Grand Tour 3D  License: Freeware
	The Distant Suns-Grand Tour 3D screen saver is a high-speed full motion solar-system simulator using OpenGL technology and accelerated graphics. The positions and rotations of each of the planets and their moons are accurate to the current date and time! (As a result, this can also serve as a real-time clock.) As the day progresses you can observe the Great Red Spot of Jupiter as it wheels across the face of the giant planet. Watch the moons of Saturn in their daily dance around the majestic ringed world or the Earth rotate under your feet. The constantly changing scenes assure and infinite variety of interplanetary vistas. Rated 4 stars by PC Mag (June 8, 2004) Author: First Light SW| Date: 22-04-2004 | Size: 2440 KB
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