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Crash Test - Herricks.org
Crash Test - Herricks.org

... Impacts happen elsewhere in the universe too. Many exoplanets (planets that exist outside our solar system) are surrounded by telltale dust clouds that could have been caused only by collisions, she notes. “If you want to understand the solar system, you want to understand impact events and what the ...
Toys Watch the Sky
Toys Watch the Sky

... The Sun appears to move from east to west due to the rotation of the Earth in the opposite direction (west to east). The time of day at which shadows are shortest is the time when the Sun is due north, so the shortest shadow points in a north-south direction. Some children may find it hard to believ ...
Test yourself on the crossword! Increase your knowledge
Test yourself on the crossword! Increase your knowledge

... 6) Uranus has rings, they are very dark and are composed of fairly large particles ranging up to 10 meters in diameter in addition to fine dust. ...
chapter 14 - Astronomy
chapter 14 - Astronomy

... 4. In the case of the degenerate core of a red giant, the more massive the core is, the smaller is its radius. 5. As the red giant evolves and hydrogen burning takes place in its outer layers, the helium “ashes” are dumped back onto the degenerate core, raising the temperature of the core. 6. When t ...
Star- large ball of gas held together by large ball of gas held
Star- large ball of gas held together by large ball of gas held

... Where hydrogen is built into helium at a temperature of millions of degrees. ...
Lecture13.v3 - Lick Observatory
Lecture13.v3 - Lick Observatory

... gravity strongly perturbed the orbits of almost all the asteroids • Most of them got nudged into highly eccentric orbits, from which they either leave the Solar System or head inwards toward the Sun • A fraction of the asteroids headed inwards may have hit the early Earth! Page 26 ...
Slide 1
Slide 1

... A storm that Jupiter has is known as the Red Spot. This red spot is actually a huge storm that has been raging on Jupiter for at least 400 years. Although the Great Red Spot is the most famous feature of Jupiter, it is just one part of the complex atmosphere of the giant planet. The distinctive colo ...
Earth in the Universe
Earth in the Universe

... and composition of the universe. Stars go through a sequence of developmental stages—they are formed; evolve in size, mass, and brightness; and eventually burn out. Material from earlier stars that exploded as supernovas is recycled to form younger stars and their planetary systems. The sun is a med ...
Shows` Detail - Nejoum Planetarium
Shows` Detail - Nejoum Planetarium

... herself, King Cepheus, Queen Cassiopeia, Monster Cetus, Celestial W formed by joining stars. Hero Perseus and Flying Horse Pegasus as stick figures and illustrations in the sky. ...
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... Comets Kuiper Belt beyond orbit of Neptune to 10,000,000,000 miles ...
Date - Wayne State University Physics and Astronomy
Date - Wayne State University Physics and Astronomy

... The structure and origin of the Solar System. Introduction to extrasolar planets. Earth as a terrestrial planet and its atmosphere. Supervolcanoes. The greenhouse effect and the ozone layer. The Moon: its surface, structure, and theories of origin. Mercury: surface, rotation, and orbit. Venus: atmos ...
Life Cycle of a Star
Life Cycle of a Star

... Although some white dwarfs are no larger than the Earth, the mass of such a dwarf can equal 1.4 times that of our sun. A spoonful of white dwarf matter would weigh several tons. ...
Astronomy - Core Knowledge Foundation
Astronomy - Core Knowledge Foundation

... An Introduction to Light & Sound ​ (Sadler, 1987). At this early grade level, students are  help to reinforce and extend learning about the  not expected to explain the seasons or the cause of  nature of light and the sun.  the phases of the moon Instead, they will be focusing  on the development of ...
4th Unit
4th Unit

... the Soviet Union and the United States), as well as a later missions to space? What space spin-offs are used now by our society that were originally created for use in space? ...
The Sun, Our Star
The Sun, Our Star

... sunshine, an internal energy source must be present to maintain hydrostatic equilibrium If the Sun were made of pure coal, the Sun would last only a few thousand years  If the Sun were not in equilibrium, but creating light energy from gravitational energy (the Sun is collapsing), the Sun could las ...
145KB - NZQA
145KB - NZQA

91KB - NZQA
91KB - NZQA

... Rigel was once a main sequence star; this is where Rigel spends most of its life. Main sequence stars use hydrogen gas as their fuel. Hydrogen fuses together (by nuclear fusion) to form helium and release energy. Rigel’s time on the main sequence will be relatively short due to its massive initial m ...
В современной астрофизике одной из наиболее
В современной астрофизике одной из наиболее

... from the general space background have been appeared unsuccessful till now. May be, the idea of neutrino polymorphism found in Sudbury Neutrino Observatory3 will give a light on the problem. New observations and the facts on the physics of the Sun questioned the conventional theories of the sun’s st ...
Lecture1.2010 - Lick Observatory
Lecture1.2010 - Lick Observatory

... From Hubble Space Telescope ...
Directed Reading
Directed Reading

... d. Electrically charged particles are more easily seen through the thin air near the poles. ______ 38. How does the solar wind produce the colorful sheets of light? a. Electrically charged particles heat up in Earth’s atmosphere and begin to glow. b. Electrically charged particles strike the atoms a ...
here - Just A Theory
here - Just A Theory

... aside, there is no scientific evidence that we have ever been visited by an alien civilisation. The reason why could lie in just how vast space is. Our nearest star system Alpha Centauri, 4.3 light years away, at the speed of Voyager it would take 80,000 years to reach.[9] Nothing humanity has ever ...
zenith - Gardner-Webb University
zenith - Gardner-Webb University

... Come to a consensus answer you both agree on. If you get stuck or are not sure of your answer, ask another group. If you get really stuck or don’t understand what the Lecture Tutorial is asking, ask me for help. ...
Galaxies, stars and planets
Galaxies, stars and planets

... generally the result of multiplying together a number and a unit of measurement. Thus a distance such as 5.2 metres is really the result of multiplying the number 5.2 by the unit of distance known as the metre. There are many units of measurement in common use, so, whenever you quote the value of a ...
Setting the Stage for Habitable Planets
Setting the Stage for Habitable Planets

Planetary Orbit Simulator – Student Guide
Planetary Orbit Simulator – Student Guide

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Formation and evolution of the Solar System



The formation of the Solar System began 4.6 billion years ago with the gravitational collapse of a small part of a giant molecular cloud. Most of the collapsing mass collected in the center, forming the Sun, while the rest flattened into a protoplanetary disk out of which the planets, moons, asteroids, and other small Solar System bodies formed.This widely accepted model, known as the nebular hypothesis, was first developed in the 18th century by Emanuel Swedenborg, Immanuel Kant, and Pierre-Simon Laplace. Its subsequent development has interwoven a variety of scientific disciplines including astronomy, physics, geology, and planetary science. Since the dawn of the space age in the 1950s and the discovery of extrasolar planets in the 1990s, the model has been both challenged and refined to account for new observations.The Solar System has evolved considerably since its initial formation. Many moons have formed from circling discs of gas and dust around their parent planets, while other moons are thought to have formed independently and later been captured by their planets. Still others, such as the Moon, may be the result of giant collisions. Collisions between bodies have occurred continually up to the present day and have been central to the evolution of the Solar System. The positions of the planets often shifted due to gravitational interactions. This planetary migration is now thought to have been responsible for much of the Solar System's early evolution.In roughly 5 billion years, the Sun will cool and expand outward many times its current diameter (becoming a red giant), before casting off its outer layers as a planetary nebula and leaving behind a stellar remnant known as a white dwarf. In the far distant future, the gravity of passing stars will gradually reduce the Sun's retinue of planets. Some planets will be destroyed, others ejected into interstellar space. Ultimately, over the course of tens of billions of years, it is likely that the Sun will be left with none of the original bodies in orbit around it.
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