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Topic: Timeline of solar system astronomy

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Solar system

Timeline of solar astronomy

134 BC

280 BC

240s BC

Solar eclipse

276 BC

150 BC

Hipparchus

List of solar system objects

Nicholas Copernicus

Seth Nicholson

Aristarchus

585 BC

249 BC

	Solar system - Wikipedia, the free encyclopedia
		In the outer regions of this solar nebula, ice and volatile gases were able to survive, and as a result, the inner planets are rocky and the outer planets were massive enough to attract large amounts of lighter gases, such as hydrogen and helium.
		The point at which the solar system ends and interstellar space begins is not precisely defined, since its outer boundaries are delineated by two separate forces: the solar wind and the Sun's gravity.
		The solar system is part of the Milky Way galaxy, a spiral galaxy with a diameter of about 100,000 light years containing approximately 200 billion stars, of which our Sun is rather large and bright.
	en.wikipedia.org /wiki/Solar_system (4695 words)

	Solar system - Internet-Encyclopedia.com (Site not responding. Last check: 2007-11-04)
		Small quantities of dust are present throughout the solar system and are responsible for the phenomenon of zodiacal light.
		Planetary systems are generally believed to form as part of the same process which results in star formation; although, some argue that systems are formed by some kind of accidental "stellar near-collison".
		The solar system is part of the Milky Way galaxy, a spiral galaxy with a diameter of about 100,000 light years containing approximately 200 billion stars, of which our Sun is fairly typical.
	www.internet-encyclopedia.com /ie/s/so/solar_system.html (1503 words)

	Solar system
		Small quantities of dust are present throughout the solar system, and is responsible for the zodiacal light.
		The apparent motions of solar system objects as viewed from a moving Earth were believed to be their actual motions about a stationary Earth.
		Until recently, the solar system was the only known example of a planetary system, although it was widely believed that other comparable systems did exist.
	www.dealreviews.com /glossary/astronomy/solar_system.shtml (1322 words)

	List of science topics - Wikipedia, the free encyclopedia
		Timeline of galaxies, clusters of galaxies, and large-scale structure
		Timeline of the interstellar medium and intergalactic medium
		Timeline of white dwarfs, neutron stars, and supernovae
	www.wikipedia.org /wiki/List_of_science_topics (134 words)

	Astronomy Timeline
		This is a timeline of important events in astronomical history.
		Introduction of the Julian calendar, a purely solar calendar, to the Roman Empire.
		Muhammad, founder of the Islamic religion, was born in 570 A.D. in Mecca.
	www.windows.ucar.edu /tour/link=/the_universe/uts/timeline.html (1175 words)

	Daniel Sevo's Astronomy - Solar System
		Since the beginning of the last century, we have a very accurate model of our Solar system, but for a long time, we had no idea if our system is one of a kind or if there are lot's of systems like ours out there.
		There were those who thought that our type of system is very common and others who thought that it's not even certain other stars than our Sun have planets at all.
		Our solar system consists of numerous objects, no one knows exactly how many, simply because we have not yet examined the outer regions of the system and we do not have the technology to detect objects below a certain size.
	hem1.passagen.se /des/astronomy/astro_solarsystem.htm (990 words)

	Time Line of Space Exploration
		The failure of the new system results in the collision of the freighter into Mir, causing a serious air leak and damage to the electrical power of the station.
		This system is planned as a direct competitor to Iridium's cluster, which began launching in May of 1997.
		The mission is dedicated to the study of the effects of weightlessness on the human neurological system, with the astronauts serving as both researchers and experimental subjects.
	my.execpc.com /%7Eculp/space/timeline.html (5900 words)

	The Galileo Project \| Chronology \| Galileo Timeline
		Years are linked to the European Timeline, which provides a broad overview of concurrent events in Europe.
		The phases of Venus falsify the Ptolemaic System and prove that Venus goes around the Sun, in conformance with the Copernican System.
		Ingoli's tract, Disputation on the place and stability of the Earth, against the system of Copernicus, in which he uses scriptural arguments against Copernicus, is not printed.
	es.rice.edu /ES/humsoc/Galileo/galileo_timeline.html (4075 words)

	Yahooligans! - Science and Nature:Astronomy and Space:Solar System:Comets, Meteors, and Asteroids
		Solar System Bodies: Asteroids - provides information about what asteroids are and how they are detected.
		Solar System Bodies: Comets - learn about comets, what they are made of, and what happens on their orbits.
		Solar System Bodies: Meteoroids - information about where these "shooting stars" come from, what they're made of, and more.
	www.yahooligans.com /Science_and_Nature/Astronomy_and_Space/Solar_System/Comets__Meteors__and_Asteroids (516 words)

	HSC The Cosmic Engine (Site not responding. Last check: 2007-11-04)
		Beyond the solar system, there is a vast expanse of space, with an occasional grain of dust or elemental atom floating in the dark emptiness.
		Our solar system is relatively young: it formed five billion years ago, when the universe was two-thirds its present size.
		Our solar system consists of the Sun; the nine planets, sixty-six satellites of the planets, a large number of small bodies (the comets and asteroids), and the interplanetary medium.
	www.phys.unsw.edu.au /hsc/cosmic.html (4506 words)

	Yahooligans! - Science and Nature:Astronomy and Space:Solar System:Sun (Site not responding. Last check: 2007-11-04)
		Solar Flare Theory - find out what solar flares are, why we study them, and more from NASA.
		Solar Max 2000 - learn how this increased solar activity, including sunspots and solar flares, can occur periodically and how Earth and satellites are affected.
		Solar System Bodies: Sun - information about the sun's surface, its mass, and more.
	www.yahooligans.com /Science_and_Nature/The_Earth/Space/Astronomy/Solar_System/Sun (497 words)

	Mission to Mars
		One of the most striking features of Mars is Valles Marineris, a system of canyons located along the equator.
		Images from the Mars Global Surveyor spacecraft reveal that the lowest-lying regions in the northern hemisphere of Mars are among the flattest, smoothest places in the Solar System.
		Like other bodies in the Solar System, Mars has many impact craters that were formed by natural objects striking the planet.
	athena.cornell.edu /mars_facts/geography.html (464 words)

	UNIT PLANNING:
		They will learn that the earth is the only known object in the solar system to have life.
		Position the sun in the center of the open area, facing his classmates, and explain to the students that the sun is the center of our solar system.
		In their journals, the students will write, "The sun is the center of our solar system.
	sched.sbu.edu /FACULTY/ncasey/HTMLFiles/earthsun/EarthSunMoon.html (4757 words)

	World Almanac for Kids
		PLUTO, in astronomy, traditionally regarded as the ninth planet from the sun and the smallest and coldest planet in the solar system.
		Pluto was discovered as the result of a telescopic search inaugurated in 1905 by the American astronomer Percival Lowell, who postulated the existence of a distant planet beyond Neptune as the cause of slight perturbations (see orbits) in the motions of Uranus.
		Pluto was also found to have a very thin atmosphere, probably of methane and nitrogen, exerting a pressure on the planet's surface that is less than 1/300,000th of the earth's atmospheric pressure at sea level.
	www.worldalmanacforkids.com /explore/space/pluto.html (568 words)

	The Scale of the Solar System
		In a solar eclipse which was total in one location, at another location about 1000 kilometers away, only 80% of the Sun was covered.
		Since the Sun's distance sets the scale of the entire solar system, Tycho believed Mars was close enough for its apparent position in the sky to be shifted measurably as the Earth's rotation carried an observer from one side of the globe to the other.
		Tycho (at least some of the time) believed he could see a difference with his pre-telescope equipment, but in fact, the solar system was much bigger than he had assumed, far beyond his abilities.
	www-istp.gsfc.nasa.gov /stargaze/Sscale.htm (838 words)

	ThinkQuest : Library : Astronomy
		The educational objectives of "Astronomy for Kids" are to teach kids in grades 4 through 6 about astronomy and outer space in a fun and interesting manner.
		Astronomy, from the past to the present is covered at this excellent web site.
		Astronomy is the study of the stars, planets, and other objects in space.
	www.thinkquest.org /library/cat_show.html?cat_id=40&cid=1 (3927 words)

	The Solar System
		The Nine Planets: A Multimedia Tour of the Solar System - Includes links to about 90 WWW "pages", one page for each major body in the Solar System.
		Views of the Solar System - Views of the Solar System presents a vivid multimedia adventure unfolding the splendor of the Sun, planets, moons, comets, asteroids, and more.
		Solar System Adventure - Students learn about the solar system and our galaxy from World Wide Web sites and write a science fiction story based on what they discover.
	edtech.kennesaw.edu /web/solar.html (594 words)

	Activities!
		Demonstrate the system of directions relative to the vessel used by sailors.
		Draw a simple model of the solar system with planets in orbit around the central sun.
		Simulate an archeological dig with a stack of plates and recreate a timeline as you peel away plates that each represent a given number of years.
	analyzer.depaul.edu /paperplate/activities.htm (2135 words)

	[No title]
		He detects infrared light by measuring the temperatures in the colors of the solar spectrum created by passing sunlight through a prism.
		IRIS will be used to study the formation and evolution of galaxies, star formation, interstellar matter and extra-solar systems at wavelengths of 2-25 microns and 50-200 microns.
		The primary goal of Darwin is to search for Earth-like planets around nearby stars, and to search for signs of life on these planets by studying infrared spectral lines in their atmospheres.
	coolcosmos.ipac.caltech.edu /cosmic_classroom/timeline/timeline_onepage.html (2468 words)

	»»Reviews for Solar System«« (Site not responding. Last check: 2007-11-04)
		Volume 1 begins with an overview of various aspects of observational astronomy, focusing on the various cataloging and classification systems used to describe stars, nebulae, star clusters, and galaxies.
		Written in 1990, "Lost in the Solar System" is yet another solid effort from all those involved.
		The Magic School Bus Lost in the Solar System is one is a series of science adventure books by Joanna Cole and Bruce Degen (Illustrator), all of which are trulky excellent.
	www.booksunderreview.com /Science/Astronomy/Solar_System (5071 words)

	The Discovery of the Solar System--lesson plan #17
		Learn about the system proposed by Copernicus, and the way it explained retrograde motion: all planets moved in circles around the Sun, but the ones closer to the Sun always moved faster.
		There was no scale we could put on the solar system--the theory gave no idea what the solar system really looked like.
		He had to proclaim that he was abandoning his Copernican views, and was forced to spend the rest of his life confined to a rural estate.
	www.phy6.org /stargaze/Lsolsys.htm (1576 words)

	ScienceDaily -- Browse Topics: Science/Astronomy/Amateur/Solar_System_Observing/Moon (Site not responding. Last check: 2007-11-04)
		It has the heft of a real planet (latest estimates put it at about 20 percent larger than Pluto), a catchy code name (Xena, after the TV warrior princess), and a Guinness Book-ish record of its own (at about 97 astronomical units-or 9 billion miles from the sun-it is the solar system's farthest detected object).
		Asteroids Caused The Early Inner Solar System Cataclysm (September 19, 2005) — University of Arizona and Japanese scientists are convinced that evidence at last settles decades-long arguments about what objects bombarded the early inner solar system in a cataclysm 3.9 billion years ago.
		The Moon - Zoom Astronomy - The moon, lunar phases, tides, lunar exploration, activities.
	www.sciencedaily.com /directory/Science/Astronomy/Amateur/Solar_System_Observing/Moon (957 words)

	Astronomy Resources: Links, Telescopes, Movies, Deep Space, Instructional Materials
		Note the incredible solar prominences that sometimes extend outward for millions of miles.
		An animated gif of solar system planetary motion in one earth year.
		A wonderful animation of a binary star system and the resulting complex Doppler Shifts showing motion of the binary system components as they revolve around a common center of mass.
	jrscience.wcp.muohio.edu /html/Astronomy.html (3927 words)

	Solar System / Neptune
		The Johnson and Johnson Consumer Companies facility this week announced its new solar power system, consisting of ground-mounted panels that move during the day to follow the sun across the sky.
		The 505 kW solar tracking system is the largest and highest-output ground-mounted solar system east of the Mississippi, according to developers.
		The carreer of Charles Townes, filled with outstanding accomplishments in laser science and radio astronomy, was celebrated at a meeting held last week at the University of California at Berkeley.
	paloweb.com /Science/Astronomy/Solar_System/Neptune (379 words)

	Space Science and Astronomy Headlines
		23 December 2003: Seldom does astronomy enjoy a year with such avid and widespread amateur participation, from first-timers watching compelling sky events and photographing them, to a kid who stumped the experts with one remarkable picture that enthralled the media and the public around the world.
		It separates the vastness of the universe from the solidity of rock, yet the air we breathe is as tenuous and untouchable as light.
		A pair of new studies shows that while a number of the more than 100 known satellites take predictable, orderly paths that hint at their origins, other moons are governed by total chaos.
	www.space.com /scienceastronomy/headlines-1.html (4142 words)

	Enlaces : Science : Astronomy : Amateur : Solar_System_Observing : Moon :: 100cia.com (Site not responding. Last check: 2007-11-04)
		Exploring the Moon - Provides knowledge and its history of exploration with sections for timeline, atlas, crater catalog, and documents..
		Lunar Exploration - Contains an exploration timeline with past and future missions, and data..
		Zoom Astronomy - The Moon - General description, interior, craters, map, phases, one side, tides, eclipses, and activities..
	www.100cia.com /recursos/enlaces/Science/Astronomy/Amateur/Solar_System_Observing/Moon (330 words)

	List of reference tables - Wikipedia, the free encyclopedia
		Timeline of knowledge about galaxies, clusters of galaxies, and large-scale structure
		Timeline of knowledge about the interstellar and intergalactic medium
		List of mean centers of U.S. population during the 20th century
	www.wikipedia.org /wiki/List_of_reference_tables (1028 words)

	Gregorian Calendar Life of Christ Age of Aquarius
		The division into 12 was, also, the first gradual step towards the creation of a solar calendar and these 12 divisions became the basis for the eventual shift from the earliest lunar calendar which, by the way, could never be reconciled exactly to the actual length of a solar year.
		The reformers realized (inaccurately) that the solar year had 365.25 days, but they felt that the year would remain in agreement with the seasons if an additional day was intercalated every 4 years.
		The apparent solar day varies from the mean solar day by as much as "almost" 32 minutes (pi approximation) which is averaged out to a difference of + or - "almost" 16 minutes on either side of the mean (more Pi factor stuff).
	www.aloha.net /~johnboy/chrono.htg/chrono.htm (5608 words)

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