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... solid objects, while others are orbiting “rubble piles”. • The Asteroid Belt contains billions and billions of asteroids. • Gravitational influences can move asteroids out of the Belt ...
answers
answers

... 2. Does it take more or less time for Venus to go around the Sun than it takes the Earth? [less] 3. Does it take more or less time for Jupiter to go around the Sun than it takes the Earth? [more] 4. How big is the Earth? Is its radius 4241 km, 6371 km or 8763 km? [6371] 5. Say one of the Guide Laws ...
Lecture11 - UCSB Physics
Lecture11 - UCSB Physics

... This highly magnified image shows a microscopic dust grain that came from interplanetary space. It entered Earth’s upper atmosphere and was collected by a high-flying aircraft. Dust grains of this sort are abundant in star-forming regions like the Orion nebula. These tiny grains were also abundant i ...
This project is now funded
This project is now funded

... The last of the Malawi junior school national curriculum lessons has been posted for entry onto the memory flash drive. The plan now is to complete by mid-March the whole of this curriculum. In order that we may put this project into some perspective for you, one appendix 1 is one of the actual 10,8 ...
SOLAR SYSTEM DEFINITIONS
SOLAR SYSTEM DEFINITIONS

... ROTATION: the spinning of the Earth on its axis; The earth rotates once every 24 hours; this causes day and night! REVOLUTION: the path the Earth takes around the sun. The earth revolves around the sun once every 365 days; this combined with the earth’s tilt causes seasons! ORBIT: the path the Earth ...
What do the stars tell us?
What do the stars tell us?

... Late stages of the Sun • The total power put out by the Sun will rise to several thousand times what it puts out today. • Earth will be very hot and will probably end up inside the Sun, where it may contribute to the dust that helps the Sun dump the unprocessed fuel (45% of its mass) back into spac ...
The Solar System Sections 16.1-16.8
The Solar System Sections 16.1-16.8

... Formation of the Solar System • Began with a large, swirling volume of cold gases and dust – a rotating solar nebula • Contracted under the influence of its own gravity – into a flattened, rotating disk • Further contraction produced the protosun and eventually accreted the planets • As particles m ...
lecture4
lecture4

... (non-retrograde) motion of the planets was attributed to actual motion along what circle? A) deferent B) epicycle C) retrograde loop D) equant ...
Lecture11 - UCSB Physics
Lecture11 - UCSB Physics

... This highly magnified image shows a microscopic dust grain that came from interplanetary space. It entered Earth’s upper atmosphere and was collected by a high-flying aircraft. Dust grains of this sort are abundant in star-forming regions like the Orion nebula. These tiny grains were also abundant i ...
Astronomy 1010 final review sample topics
Astronomy 1010 final review sample topics

... Astronomy 1010 final review sample topics 1. What is the galaxy? a.) a large number of stars; they are attracted to each other by gravity b.) a planet and one or more moons; they are attracted to each other by gravity c.) the sum total of all matter and energy that exists; the material is attracted ...
TRANSIT
TRANSIT

... consequence of Einstein’s General Relativity, which still lay more than 60 years in the future. ) Had Vulcan existed, it would obviously have been near-impossible to see in normal circumstances, as it would have been permanently lost in the Sun’s glare. It was proposed that there might be two ways o ...
Destination Antarctica Study Buddy
Destination Antarctica Study Buddy

... may happen as a result. Polar ice-caps are reducing in average size. The result is possible coastline flooding and weather changes. I can describe characteristics of each of the planets in our solar system. Mercury—smallest and closest to the sun Venus—the hottest, referred to as Earth’s twin Earth— ...
File - Science Partnership
File - Science Partnership

... of asteroids and comet nuclei have been discovered in the same region (Kuiper belt). Some of these are quite large and approach the size of Pluto. 2. Pluto is very small compared to the other planets. In fact, Pluto is about half the size of our own moon; seven other moons are larger than Pluto. Eli ...
Slide 1
Slide 1

... to convert them into astronomical units (AU). For the outer planets, each planet is 'predicted' to be roughly twice as far away from the Sun as the next inner object. When originally published, the law was approximately satisfied by all the known planets — Mercury through Saturn — with a gap between ...
Solar System Project
Solar System Project

... their choice and presents the information through a combination of written, visual and oral presentations. Each student will be required to turn in a Solar System Model and Display Board on the planet assigned. Then each student will give an oral presentation based on his or her research. The overal ...
Revision sheet Q3
Revision sheet Q3

... Weather-stratus-cumulus-cumulonimbus-cirrus ...
Types of Planets and Stars
Types of Planets and Stars

... vary in size, mass, and brightness, but they all convert hydrogen into helium, also known as nuclear fusion. While our sun will spend 10 billion on its main sequence, a star ten times as massive will stick around for only 20 million years.  Red Dwarf -- most common stars in the universe. These star ...
Some Basic Facts to Know
Some Basic Facts to Know

... For electron to move from inner orbit to one further out, it must gain exactly the energy difference between the orbits Î Absorb photon with correct energy Electron falling to lower level Î can emit photon with energy ...
solar system form
solar system form

... • The only surface liquid water in the solar system ...
PowerPoint Presentation - Small Bodies in the Solar System
PowerPoint Presentation - Small Bodies in the Solar System

... around the sun, made of rock and metal. • They range in size from a few meters to more than 900 km in diameter - too small to be a planet. • Most asteroids are located in the asteroid belt, between Mars & Jupiter. • Some asteroids that orbit planets are considered moons. • Some astronomers consider ...
Motion of stars, planets
Motion of stars, planets

... only 1/3 the salary of the nobleman) • Kepler worked for four years trying to derive the motions of Mars from Brahe’s observations • In the process, he discovered that the plane of the earth’s orbit and the plane of Mars’ (and eventually the other planets) passed through the sun • Suspecting the sun ...
Centre of Mass
Centre of Mass

... • In order to be able to say whether life exists outside our solar system, it is necessary not only to find planets of the size of the earth, but also to detect molecules which form the basis of life. ...
(the largest solar system planet) represents at
(the largest solar system planet) represents at

... (Mercury, Venus, Earth, Mars), four outer planets (Jupiter, Saturn, Uranus, Neptune), approximately three “dwarf planets,” more than 130 satellites (orbiting moons), an asteroid belt, and entering comets. As one ventures into space, the distances from one planet to another are vast. In fact, the sol ...
Solar System PPT
Solar System PPT

... Way, which is among billions of galaxies that make up the universe ...
Lesson 29
Lesson 29

... temperatures 320 degrees below zero. They are the farthest from the sun. On Mercury, the temperature can reach 600 degrees; on Venus, the temperature may reach 860 degrees. Plants and animals can’t survive on these planets because of the heat or the cold. Earth is called the “Life Planet” because sc ...
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IAU definition of planet



The definition of planet set in Prague in 2006 by the International Astronomical Union (IAU) states that, in the Solar System, a planet is a celestial body which: is in orbit around the Sun, has sufficient mass to assume hydrostatic equilibrium (a nearly round shape), and has ""cleared the neighborhood"" around its orbit.A non-satellite body fulfilling only the first two of these criteria is classified as a ""dwarf planet"". According to the IAU, ""planets and dwarf planets are two distinct classes of objects"". A non-satellite body fulfilling only the first criterion is termed a ""small Solar System body"" (SSSB). Initial drafts planned to include dwarf planets as a subcategory of planets, but because this could potentially have led to the addition of several dozens of planets into the Solar System, this draft was eventually dropped. The definition was a controversial one and has drawn both support and criticism from different astronomers, but has remained in use.According to this definition, there are eight planets in the Solar System. The definition distinguishes planets from smaller bodies and is not useful outside the Solar System, where smaller bodies cannot be found yet. Extrasolar planets, or exoplanets, are covered separately under a complementary 2003 draft guideline for the definition of planets, which distinguishes them from dwarf stars, which are larger.
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