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Seeding Life on the Moons of the Outer Planets via Lithopanspermia
Seeding Life on the Moons of the Outer Planets via Lithopanspermia

... shorter timescales (30 kyr). They found some transfer to Jupiter, but only at very high ejection velocities (v∞ = 9.64 and 12.1 km/s). The velocities used here and by Gladman et al. (2006) are significantly higher than what Gladman et al. (1996) predicts to be typical, but result in faster transfer ...
Types of artificial satellites Artificial satellites are classified according
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... Communications satellites serve as relay stations, receiving radio signals from one location and transmitting them to another. A communications satellite can relay several television programs or many thousands of telephone calls at once. A ground station has a large dish antenna for transmitting and ...
Physics 107 Ideas of Modern Physics
Physics 107 Ideas of Modern Physics

... • The actual motion can be quite complex, but the physical laws demonstrate astounding simplicity, beauty, and symmetry. Physics 107, Fall 2006 ...
Rocky Planets The formation of our Moon The Nature of
Rocky Planets The formation of our Moon The Nature of

... Oldest rocks on Earth are about 4 billion years old, with the oldest small grains around 4.4 billion years old. Oldest rocks on the Moon are also about 4.4 billion years old Oldest rocks in the solar system (recovered meteorites) are about 4.55 billion years old - leftovers of material that formed t ...
AST-103L Spring 2001 - University of Texas Astronomy Home Page
AST-103L Spring 2001 - University of Texas Astronomy Home Page

... overall 22 year magnetic cycle as well as an 11 year sunspot cycle. At the beginning of an 11 year cycle, several sunspots appear at about 30° north and south latitudes. As the cycle progresses, you can track the sunspots’ motion. Generally, individual sunspots or groups of sunspots do you shift sig ...
Chapter 24: Earth, Moon, and Sun Planet Earth
Chapter 24: Earth, Moon, and Sun Planet Earth

... Imagine a pendulum at the North Pole. The pendulum always swings in the same direction but because of Earth It takes 23 hours, 59 minutes and 4 seconds for the Earth to make one complete rotation on its axis, if we watch Earth spin from out in space. Because Earth is moving around the Sun at the sam ...
4-3.1 - S2TEM Centers SC
4-3.1 - S2TEM Centers SC

... to understand. Ask students “Are the real planets lined up in space like they were in our model? What are the real planets doing in space that they are not doing in our model? What shape was our model? (straight line). What shape are the planet’s orbits? (Circular, oval, elliptical). Compare the hal ...
Space BootCamp3.8D_AC
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... together, when actually the solar system is so large that models are constructed to study it. All of the following are reasons why scientists use models EXCEPT – A. B. C. D. ...
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... together, when actually the solar system is so large that models are constructed to study it. All of the following are reasons why scientists use models EXCEPT – A. B. C. D. ...
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1 Patterns in the Solar System (Chapter 18)

... Use the space provided for you on the following page for your scale model of the inner Solar System (see question 7 also). Use large points to represent the four terrestrial planets and place them at the appropriate distance from the Sun. Use the mean distance from the Sun in AUs listed in table 18. ...
My Trip to Jupiter Journal
My Trip to Jupiter Journal

... Modeling Neato-Magneto Planets Jupiter and Earth are surrounded by magnetic Àelds. Create your own miniature, 3-D versions! The ball represents a planet with magnetic Àelds. It has a magnet inside, which generates a magnetic Àeld. Trace planetary magnetic Àelds! Sprinkle some “clamped” staples onto ...
Chapter 29: Our Solar System
Chapter 29: Our Solar System

... a century, other astronomers were finding evidence that supported the heliocentric model. For example, from 1576–1601, a Danish astronomer, Tycho Brahe, made many accurate observations of planetary positions. Using Brahe’s data, Johannes Kepler demonstrated that each planet orbits the Sun in a shape ...
Movement In Our Sky - Wallingford Public Schools
Movement In Our Sky - Wallingford Public Schools

... 1.1 – The sun appears to move across the sky in the same way every day, but its path changes gradually over the seasons. • An object’s position can be described by locating it relative to another object or the ...
December 2013
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INPOP06: a new numerical planetary ephemeris
INPOP06: a new numerical planetary ephemeris

... readily available. Besides the two numerical ephemerides presented above, the IMCCE has developed, since the early 80s, some analytical ephemerides of the planetary motion. However, these ephemerides do not have enough accuracy for comparison with the latest and more accurate spacecraft tracking obs ...
Formation of the Sun and the Planets and the Planets
Formation of the Sun and the Planets and the Planets

... different minerals composing i the th inclusions to be distinguished. The original inclusion was about 1.6 cm in diameter. (from Encyclopedia of the Solar System, p.57) ...
Dwarf Planets - Cloudfront.net
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... So the building blocks of proteins and thus life have been around since before the solar system formed. ...
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ES Chapter 29

... • Earth is one of nine planets revolving around, or orbiting, the Sun. • All the planets, as well as most of their moons, also called satellites, orbit the Sun in the same direction, and all their orbits, except Pluto’s, lie near the same plane. • The planets of our solar system have various sizes, ...
Moon 101
Moon 101

... The core of the sun is about 15 million degrees Celsius. Here, hydrogen is formed into helium by a process known as nuclear fusion. This process creates energy. This energy is radiated into space in the forms of light and heat. The sun also gives off other kinds of waves such as UV rays and X-rays. ...
Solar Sytem Lithograph Set pdf
Solar Sytem Lithograph Set pdf

... think the density indicates an enormous iron core composing some 75 percent of Mercury’s diameter. A rocky mantle and crust only about 600 km thick surround the core. When the core and mantle cooled, the radius of the planet reduced by 2 to 4 km. The probable result of the planet’s crust shrinking i ...
Planets Teacher Guide
Planets Teacher Guide

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Lecture Outlines Natural Disasters, 5th edition
Lecture Outlines Natural Disasters, 5th edition

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Sun Powerpoint without Movies - Lunar and Planetary Institute
Sun Powerpoint without Movies - Lunar and Planetary Institute

... • Our Sun (and all active stars) emits radiation – Radio, infrared, visible, ultraviolet, x-ray and even some ...
Geosystems: An Introduction to Physical Geography Solar Energy to
Geosystems: An Introduction to Physical Geography Solar Energy to

... B) planets form from the remains of super-giant planetesimals that undergo nuclear fission and blow apart, thereby creating smaller objects the planets. C) early in the solar system's history, a star passed near to the Sun and pulled off gases that eventually condensed to form planets. D) matter in ...
Chapter 14 The Solar System Neptune
Chapter 14 The Solar System Neptune

... The four outer planets–Jupiter, Saturn, Uranus, and Neptune– are much larger and more massive than Earth, and they do not have solid surfaces. Pluto is small and rocky. ...
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Earth's rotation



Earth's rotation is the rotation of the planet Earth around its own axis. The Earth rotates from the west towards east. As viewed from North Star or polestar Polaris, the Earth turns counter-clockwise.The North Pole, also known as the Geographic North Pole or Terrestrial North Pole, is the point in the Northern Hemisphere where the Earth's axis of rotation meets its surface. This point is distinct from the Earth's North Magnetic Pole. The South Pole is the other point where the Earth's axis of rotation intersects its surface, in Antarctica.The Earth rotates once in about 24 hours with respect to the sun and once every 23 hours 56 minutes and 4 seconds with respect to the stars (see below). Earth's rotation is slowing slightly with time; thus, a day was shorter in the past. This is due to the tidal effects the Moon has on Earth's rotation. Atomic clocks show that a modern-day is longer by about 1.7 milliseconds than a century ago, slowly increasing the rate at which UTC is adjusted by leap seconds.
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