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File - Mr. Catt`s Class
File - Mr. Catt`s Class

... 1. Its orbit is almost circular with a period of 225 days; orbital speed is a nearly constant 35 km/s (78,300 mi/hr). 2. Venus’s surface is shrouded by heavy clouds. Since 1961 we have been bouncing radar signals off its surface to learn about its rotation rate and surface features. 3. Venus’s sider ...
Solar System (Tune – Twinkle, Twinkle Little Star)
Solar System (Tune – Twinkle, Twinkle Little Star)

... We love the Earth, our home, Its oceans and its trees. We eat its food, we breathe its air, So no pollution, please. Mars is very red, It’s also dry and cold Some day you might visit Mars If you are really bold. Great Jupiter is big. We’ve studied it a lot. We found that it has 16 moons And a big re ...
USU 4-H Space Tote - Utah 4-H
USU 4-H Space Tote - Utah 4-H

... Uranus is the seventh planet from the sun at a distance of about 2.9 billion km (1.8 billion miles) or 19.19 times further from the sun than Earth is. If the sun were as tall as a typical front door Uranus would be about as big as a baseball. One day on Uranus takes about 17 hours. Uranus makes a co ...
EarthScience-Astronomy-TheSolarSystem
EarthScience-Astronomy-TheSolarSystem

... 13. Describe how the Moon and the Sun cause the tides. a. Tides- The rise and fall of the surface of oceans, seas, bays, rivers, and other water bodies caused by the gravitational attraction of the Moon and Sun occurring unequally on different parts of the Earth. b. Approximately 70 percent of Eart ...
Extrasolar planets Topics to be covered Planets and brown dwarfs
Extrasolar planets Topics to be covered Planets and brown dwarfs

... • Overall, ~5% of solar-like stars have radial velocity–detected Jupiters • But if we take metallicity into account: – >20% of stars with 3x the metal content of the Sun have planets – only ~3% of stars with 1/3rd of the Sun’s metallicity have planets ...
Perseid Meteor Shower - Fraser Heights Chess Club
Perseid Meteor Shower - Fraser Heights Chess Club

... small pieces of the comet along the comet's path. • A meteor shower happens when Earth passes through the path of a comet and small fragments of comet debris burn in the earth’s atmosphere. • The meteor showers can be predicted and occur at the same time each year. ...
Astro 001 Spring 2002
Astro 001 Spring 2002

... (60) Compared to Jovian planets, terrestrial planets have a A. more rocky composition. B. lower density. C. more rapid rotation. D. larger size. E. [More than one of the above.] (61) Most asteroids orbit the Sun A. between Earth and Mars. B. between Mars and Jupiter. C. between Jupiter and Saturn. ...
Mercury`s Orbit
Mercury`s Orbit

... iron  core.     •  Yet,  Venus  has  no  detectable  magneGc  field  unrelated  to  the  solar   wind.  This  may  be  due  to  Venus’  slow  rotaGon,  and/or  the  absence  of   a  liquid  core.  It  only  has  an  induced  magnet ...
HOW PLANETARY MAGNETOSPHERES HAVE AND CAN
HOW PLANETARY MAGNETOSPHERES HAVE AND CAN

... 47° tilts of their magnetic axis from the spin axis respectively. Uranus, with its spin axis nearly pointing to the sun for some portions of its year such that it rolls about its orbit, consequently has a unique solar windmagnetosphere interaction. Neptune’s magnetosphere is known to produce aurora, ...
Where do planets get their light?
Where do planets get their light?

... about the same • The Earth rotation takes much less time than its revolution ...
Chapter13_New
Chapter13_New

... The perihelion distances of scattered disk objects are close enough to Neptune's orbit that they will eventually experience an encounter with Neptune and move into the planetary system. stellar Trans-Neptunian Object (TNO) – A small, icy solar system body in an orbit beyond Neptune. ...
ASTRONOMY - Distance from the Sun (MC Quiz 1)
ASTRONOMY - Distance from the Sun (MC Quiz 1)

... In the winter, when the Earth is closest to the Sun. ...
Primordial Excitation and Depletion of the Main Belt
Primordial Excitation and Depletion of the Main Belt

Stone Walls: Stories from Minnesota`s Geologic Past
Stone Walls: Stories from Minnesota`s Geologic Past

... Quarried in the Minnesota River valley, the Morton Gneiss can be found in buildings and cemeteries across the nation. No two pieces of the rock are the same and one needs only a modest imagination upon which to base a description. For me, descriptions of rock always seem to center on something edib ...
Slide 1
Slide 1

... dust tail: up to 10 million km long composed of smoke-sized dust particles driven off the nucleus by escaping gases; this is the most prominent part of a comet to the unaided eye ion tail: as much as several hundred million km long composed of plasma interactions with the solar wind ...
they aren`t just made of ice. They are made from
they aren`t just made of ice. They are made from

... Raise your hands if you know something that is solid. (Take some answers). That’s right! Your desk is solid. Your chair is solid. Your pencil is solid. Your books are solid. Anything that you can hold, sit on or stand on is solid. Now I’m going to show you something else that is solid. (Take out an ...
ASTR 380 Possibilities for Life on the Moons of Giant Planets
ASTR 380 Possibilities for Life on the Moons of Giant Planets

... The bigger spacing between planets and the bigger planets in the outer solar system push the objects around but they don’t necessarily collide with planets. ...
Goal: To understand what the Kuiper Belt is, and why it is
Goal: To understand what the Kuiper Belt is, and why it is

... • TNOs are made of materials that have not changed since the formation of the solar system. • This means by studying them we can see what our solar system was like 4.5 billion years ago. • Why no planets? Well, as you went further out there was less stuff, and it took longer for the stuff that was t ...
ScaleSolarSystemUnit
ScaleSolarSystemUnit

... You will be creating four items to send to your Space Pen Pal: A. An explanation of why we see phases of the Moon B. An explanation of why we have seasons on Earth C. A model of the solar system, based on an everyday object, to help the 4th grader understand its size and distances. (You have a choic ...
astro 001.101 summer 2002 exam 2
astro 001.101 summer 2002 exam 2

... This effect is not observed (using only the naked eye); consequently the Greeks concluded that Earth does not orbit the Sun. However, the Greeks failed to realize that stars lie at very great distances. For the nearest star to the Sun, the angle  is only ~ 1/1800o. The smallest angular separation t ...
Comparative Planetology of the Outer Planets A Travel Guide to the
Comparative Planetology of the Outer Planets A Travel Guide to the

... 5 largest moons visible from Earth. 10 more discovered by Voyager 2; more are still being found. ...
closing in on extrasolar earths
closing in on extrasolar earths

... days, seared to a temperature of 1,000 degrees Celsius (about 1,800 degrees Fahrenheit). Today, we call this sort of planet a "hot Jupiter." This was the first planet found orbiting a main sequence star — a star similar to our Sun. Earlier, the irregular beat of a pulsar revealed the cindered remain ...
ROCKS notes - St. Raymond High School for Boys
ROCKS notes - St. Raymond High School for Boys

... If the shell fragments are large, they’re called coquina  ...
Dating the Earth
Dating the Earth

... argument for the age of Earth • Radioactivity is the spontaneous decay of an atom’s nucleus to a more stable form • The heat from radioactivity helps explain why the Earth is still warm inside • Radioactivity provides geologists with a powerful tool to measure absolute ages of rocks and past geologi ...
Venus is the second planet from the sun. It is 67 million miles away
Venus is the second planet from the sun. It is 67 million miles away

... are made of the same material. Because Venus is about the same size as Earth, gravity is close to the same on both planets. If you weigh 100 pounds on Earth, you would weigh 91 pounds on Venus. However, Venus and Earth are also very different. ...
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Late Heavy Bombardment



The Late Heavy Bombardment (abbreviated LHB and also known as the lunar cataclysm) is a hypothetical event thought to have occurred approximately 4.1 to 3.8 billion years (Ga) ago, corresponding to the Neohadean and Eoarchean eras on Earth. During this interval, a disproportionately large number of asteroids apparently collided with the early terrestrial planets in the inner Solar System, including Mercury, Venus, Earth, and Mars. The LHB happened after the Earth and other rocky planets had formed and accreted most of their mass, but still quite early in Earth's history.Evidence for the LHB derives from lunar samples brought back by the Apollo astronauts. Isotopic dating of Moon rocks implies that most impact melts occurred in a rather narrow interval of time. Several hypotheses are now offered to explain the apparent spike in the flux of impactors (i.e. asteroids and comets) in the inner Solar System, but no consensus yet exists. The Nice model is popular among planetary scientists; it postulates that the gas giant planets underwent orbital migration and scattered objects in the asteroid and/or Kuiper belts into eccentric orbits, and thereby into the path of the terrestrial planets. Other researchers argue that the lunar sample data do not require a cataclysmic cratering event near 3.9 Ga, and that the apparent clustering of impact melt ages near this time is an artifact of sampling materials retrieved from a single large impact basin. They also note that the rate of impact cratering could be significantly different between the outer and inner zones of the Solar System.
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