Planets
... These objects all orbit the sun in roughly circular orbits that lie in the same plane, the ecliptic (Pluto is an exception; it has an elliptical orbit tilted over 17 degrees from the ecliptic). The largest planet is Jupiter. It is followed by Saturn, Uranus, Neptune, Earth, Venus, Mars, Mercury, and ...
... These objects all orbit the sun in roughly circular orbits that lie in the same plane, the ecliptic (Pluto is an exception; it has an elliptical orbit tilted over 17 degrees from the ecliptic). The largest planet is Jupiter. It is followed by Saturn, Uranus, Neptune, Earth, Venus, Mars, Mercury, and ...
EXPLORING THE SOLAR SYSTEM
... of the other planets? One suggested explanation is that Mercury might originally have been bigger but it suffered a huge collision with another body early in its history which stripped away its outer layers. If so, this wouldn’t be the only case of a large impact having a major effect on a planet in ...
... of the other planets? One suggested explanation is that Mercury might originally have been bigger but it suffered a huge collision with another body early in its history which stripped away its outer layers. If so, this wouldn’t be the only case of a large impact having a major effect on a planet in ...
Planetary Properties
... Planets move around the Sun in closed paths, referred to as orbits. Certain properties of a planet’s orbit can affect the probability of whether or not life will develop. The properties of orbital motion have been well understood ever since Johannes Kepler (1571 - 1630) first proposed his three laws ...
... Planets move around the Sun in closed paths, referred to as orbits. Certain properties of a planet’s orbit can affect the probability of whether or not life will develop. The properties of orbital motion have been well understood ever since Johannes Kepler (1571 - 1630) first proposed his three laws ...
sun elements
... atom. The Sun also has traces of neon, sodium, magnesium, aluminum, silicon, phosphorus, sulfur, potassium, and iron. The percentages quoted here are by the relative number of atoms. If you use the percentage by mass, you find that hydrogen makes up 78.5% of the Sun's mass, helium 19.7%, oxygen 0.86 ...
... atom. The Sun also has traces of neon, sodium, magnesium, aluminum, silicon, phosphorus, sulfur, potassium, and iron. The percentages quoted here are by the relative number of atoms. If you use the percentage by mass, you find that hydrogen makes up 78.5% of the Sun's mass, helium 19.7%, oxygen 0.86 ...
The Sun is a Star
... Sun. It can damage your eyes. • You can view the Sun by making a small hole in a piece of paper. Then, hold the paper with the hole about a meter from a black piece of paper. You will see an image of the Sun. ...
... Sun. It can damage your eyes. • You can view the Sun by making a small hole in a piece of paper. Then, hold the paper with the hole about a meter from a black piece of paper. You will see an image of the Sun. ...
Chapter 10
... • A 10-km asteroid would produce the explosion equivalent of several billion nuclear bombs • Initial destruction by high temperatures, blast, and acid rain would be followed by months of darkness and intense cold as the Sun’s light is blotted out by clouds of dust • Further evidence of the impact is ...
... • A 10-km asteroid would produce the explosion equivalent of several billion nuclear bombs • Initial destruction by high temperatures, blast, and acid rain would be followed by months of darkness and intense cold as the Sun’s light is blotted out by clouds of dust • Further evidence of the impact is ...
Solar System Formation Reading
... composition) and have many satellites that are rich in water ice and other volatiles. 5. Asteroids. The asteroids have compositions intermediate between the rock & metal rich inner planets and the volatile-rich outer solar system, and are located between the orbits of Mars and Jupiter. 6. Meteorites ...
... composition) and have many satellites that are rich in water ice and other volatiles. 5. Asteroids. The asteroids have compositions intermediate between the rock & metal rich inner planets and the volatile-rich outer solar system, and are located between the orbits of Mars and Jupiter. 6. Meteorites ...
Astronomy that falls from the sky
... grain of sand at the beach. The biggest of the rocks, larger than 329 feet across, with a weight of 10,000 tons or more, are called asteroids; most orbit the Sun in the wide flat Asteroid Belt (page 1 painting). The asteroid belt is a transition area located roughly midway between the orbits of Mars ...
... grain of sand at the beach. The biggest of the rocks, larger than 329 feet across, with a weight of 10,000 tons or more, are called asteroids; most orbit the Sun in the wide flat Asteroid Belt (page 1 painting). The asteroid belt is a transition area located roughly midway between the orbits of Mars ...
Obliquity and precession of the equinoxes The angle ε between the
... gravitational interaction of the Earth with other bodies in the solar system are working to shorten the length of the year very slightly over time: the above mean value is now 12 seconds shorter than it was 2150 years ago when the Greek astronomer Hipparchus made the first serious attempt to measure ...
... gravitational interaction of the Earth with other bodies in the solar system are working to shorten the length of the year very slightly over time: the above mean value is now 12 seconds shorter than it was 2150 years ago when the Greek astronomer Hipparchus made the first serious attempt to measure ...
Barycenter of Solar System Moon orbits
... To find the planet locations … • Pick a planet .. (poor Pluto too tough, but too far away) • Pick a date … • Pick a coordinate system … – Heliocentric = measured from the Sun (center) • Earth-Sun plane – “point of Aries” (Earth-Sun: Spring) ...
... To find the planet locations … • Pick a planet .. (poor Pluto too tough, but too far away) • Pick a date … • Pick a coordinate system … – Heliocentric = measured from the Sun (center) • Earth-Sun plane – “point of Aries” (Earth-Sun: Spring) ...
Looking for life in unlikely places: reasons why planets may not be
... distance, the concentration factor will be 100 million, and the angle of the reflected beam will be about 20 arcsec. This requires optical quality a little better than the human eye but much less precise than an ordinary off-the-shelf amateur telescope. At that distance, we could identify an Oort Clou ...
... distance, the concentration factor will be 100 million, and the angle of the reflected beam will be about 20 arcsec. This requires optical quality a little better than the human eye but much less precise than an ordinary off-the-shelf amateur telescope. At that distance, we could identify an Oort Clou ...
92 The Nearest Star: The Sun
... eye from anywhere on Earth, you can see up to 8,000 stars. With a telescope you will see many more. Still others can only be detected with other technologies. These have also helped astronomers learn about the composition of the Sun. The Sun’s composition is very different than that of Earth or the ...
... eye from anywhere on Earth, you can see up to 8,000 stars. With a telescope you will see many more. Still others can only be detected with other technologies. These have also helped astronomers learn about the composition of the Sun. The Sun’s composition is very different than that of Earth or the ...
The sun is a star, and it is very large and very far away. Its distance
... The sun is a star, and it is very large and very far away. Its distance from Earth is about 149 million kilometres. The light from the sun takes about 8 minutes to get here, travelling at 300,000 kilometres per second. However, despite the fact that the sun is so far away, we're going to show you a ...
... The sun is a star, and it is very large and very far away. Its distance from Earth is about 149 million kilometres. The light from the sun takes about 8 minutes to get here, travelling at 300,000 kilometres per second. However, despite the fact that the sun is so far away, we're going to show you a ...
slides
... By 16th century it was a 10 day discrepancy. Spring equinox was no longer on March 21st but occurred 10 days earlier. – It became a problem for the church, since day of the Easter was taken as the first Sunday following the full moon after the spring equinox. Few Popes took initiatives to reform the ...
... By 16th century it was a 10 day discrepancy. Spring equinox was no longer on March 21st but occurred 10 days earlier. – It became a problem for the church, since day of the Easter was taken as the first Sunday following the full moon after the spring equinox. Few Popes took initiatives to reform the ...
CML_DPS_PressBriefing_10Oct2006
... 9P/Tempel 1 or C/Hale-Bopp 1995 O1 and comet-dominated YSO HD100546. It lacks carbonaceous and ferrous materials but includes small icy grains. - The composition of the HD 69830 dust resembles that of a disrupted P or D-type asteroid. The amount of mass responsible for the observed emission is the e ...
... 9P/Tempel 1 or C/Hale-Bopp 1995 O1 and comet-dominated YSO HD100546. It lacks carbonaceous and ferrous materials but includes small icy grains. - The composition of the HD 69830 dust resembles that of a disrupted P or D-type asteroid. The amount of mass responsible for the observed emission is the e ...
Our Solar System and Beyond
... B. The gravity of the other object forces the planet to move inward. C. It gains mass from the other object, causing its gravitational pull to become stronger. ...
... B. The gravity of the other object forces the planet to move inward. C. It gains mass from the other object, causing its gravitational pull to become stronger. ...
Week 9
... 1. Jovian planets follow circular orbits farther from Sun than terrestrial planets • outermost terrestrial planet (Mars): 1.5 AU • innermost Jovian planet (Jupiter): 5.2 AU ...
... 1. Jovian planets follow circular orbits farther from Sun than terrestrial planets • outermost terrestrial planet (Mars): 1.5 AU • innermost Jovian planet (Jupiter): 5.2 AU ...
The Ancient Mystery of the Planets
... Thus setting the stage for the long, historical showdown between Earth-centered and Sun-centered systems. ...
... Thus setting the stage for the long, historical showdown between Earth-centered and Sun-centered systems. ...
6._Motions_in_Solar_System_student
... Thus setting the stage for the long, historical showdown between Earth-centered and Sun-centered systems. ...
... Thus setting the stage for the long, historical showdown between Earth-centered and Sun-centered systems. ...
THE THOUSAND-YARD MODEL or, The Earth as a Peppercorn
... paces (more than twice as as the total distance walked up till then). This gap marks the boundary between the inner and outer solar systems. The inner solar system contains the four small, hard, "terrestrial" (Earth-like) planet; the outer solar system contains the four large, fluid, "Jovian" (Jupit ...
... paces (more than twice as as the total distance walked up till then). This gap marks the boundary between the inner and outer solar systems. The inner solar system contains the four small, hard, "terrestrial" (Earth-like) planet; the outer solar system contains the four large, fluid, "Jovian" (Jupit ...
Lecture11
... dissociates; this absorbs some of the energy supporting the protostar, so the core begins to collapse further, until it becomes ~30% larger than the present Solar radius (but still much less massive). The protostar continues to accrete material from the infalling cloud. ...
... dissociates; this absorbs some of the energy supporting the protostar, so the core begins to collapse further, until it becomes ~30% larger than the present Solar radius (but still much less massive). The protostar continues to accrete material from the infalling cloud. ...
The Sun - GeoScience
... 14. Diagram and label the positions of the Sun, Earth, and Moon during a Solar Eclipse. 15. When does a Total Solar Eclipse occur during the Moon’s phase cycle? Click on “Recent and Future Eclipses” under Related Links 16. What is the date of the next Eclipse that will be able to be seen from the W ...
... 14. Diagram and label the positions of the Sun, Earth, and Moon during a Solar Eclipse. 15. When does a Total Solar Eclipse occur during the Moon’s phase cycle? Click on “Recent and Future Eclipses” under Related Links 16. What is the date of the next Eclipse that will be able to be seen from the W ...
Teacher`s Guide - Discovery Education
... Find out how the solar system formed and observe a model illustrating its vast distances. The Planets Discover the differences between the inner and outer planets. Listen to scientists debate Pluto’s status as a planet, and observe photographs of Jupiter from spacecraft. Comets and Asteroid Check ou ...
... Find out how the solar system formed and observe a model illustrating its vast distances. The Planets Discover the differences between the inner and outer planets. Listen to scientists debate Pluto’s status as a planet, and observe photographs of Jupiter from spacecraft. Comets and Asteroid Check ou ...
Pre SS1 Models of the Solar System - Bolinas
... stellar sphere were small, the differing distance would show up as an annual change in the apparent brightness of stars along the zodiac; in summer, for instance, when the Earth is on the side of its orbit closer to the star Spica, its proximity would make Spica look brighter than it does in winter, ...
... stellar sphere were small, the differing distance would show up as an annual change in the apparent brightness of stars along the zodiac; in summer, for instance, when the Earth is on the side of its orbit closer to the star Spica, its proximity would make Spica look brighter than it does in winter, ...
Solar System
The Solar System comprises the Sun and the planetary system that orbits it, either directly or indirectly. Of those objects that orbit the Sun directly, the largest eight are the planets, with the remainder being significantly smaller objects, such as dwarf planets and small Solar System bodies such as comets and asteroids. Of those that orbit the Sun indirectly, two are larger than the smallest planet.The Solar System formed 4.6 billion years ago from the gravitational collapse of a giant interstellar molecular cloud. The vast majority of the system's mass is in the Sun, with most of the remaining mass contained in Jupiter. The four smaller inner planets, Mercury, Venus, Earth and Mars, are terrestrial planets, being primarily composed of rock and metal. The four outer planets are giant planets, being substantially more massive than the terrestrials. The two largest, Jupiter and Saturn, are gas giants, being composed mainly of hydrogen and helium; the two outermost planets, Uranus and Neptune, are ice giants, being composed largely of substances with relatively high melting points compared with hydrogen and helium, called ices, such as water, ammonia and methane. All planets have almost circular orbits that lie within a nearly flat disc called the ecliptic.The Solar System also contains smaller objects. The asteroid belt, which lies between Mars and Jupiter, mostly contains objects composed, like the terrestrial planets, of rock and metal. Beyond Neptune's orbit lie the Kuiper belt and scattered disc, populations of trans-Neptunian objects composed mostly of ices, and beyond them a newly discovered population of sednoids. Within these populations are several dozen to possibly tens of thousands of objects large enough to have been rounded by their own gravity. Such objects are categorized as dwarf planets. Identified dwarf planets include the asteroid Ceres and the trans-Neptunian objects Pluto and Eris. In addition to these two regions, various other small-body populations, including comets, centaurs and interplanetary dust, freely travel between regions. Six of the planets, at least three of the dwarf planets, and many of the smaller bodies are orbited by natural satellites, usually termed ""moons"" after the Moon. Each of the outer planets is encircled by planetary rings of dust and other small objects.The solar wind, a stream of charged particles flowing outwards from the Sun, creates a bubble-like region in the interstellar medium known as the heliosphere. The heliopause is the point at which pressure from the solar wind is equal to the opposing pressure of interstellar wind; it extends out to the edge of the scattered disc. The Oort cloud, which is believed to be the source for long-period comets, may also exist at a distance roughly a thousand times further than the heliosphere. The Solar System is located in the Orion Arm, 26,000 light-years from the center of the Milky Way.