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The Moon and Mercury
The Moon and Mercury

... 2. How did the Moon achieve its synchronous rotation? a. When the Moon formed it just happened to have this synchronous rotation. b. The Earth raises tidal bulges on the Moon. As the Moon rotated through these bulges, internal friction slowed the Moon's rotation until it achieved tidal coupling. c. ...
Isotopic Ratios In Titanʼs Atmosphere: Clues and Challenges
Isotopic Ratios In Titanʼs Atmosphere: Clues and Challenges

... •  From our attempts to enrich D/H, we have convinced ourselves that processes exist which select between methane isotopes. ⇒  Therefore same principal (different strength) applies to carbon isotope ratio. ⇒  E.g. KIE (13CH4) ~1.01, vs. KIE (13CH3D) ~1.16. ⇒  12C/13C evolves over time, because carbo ...
The Moon - DTFizzix
The Moon - DTFizzix

...  The splashed-out rocks that would make the Moon would more naturally lie near the ecliptic than the Earth’s equatorial plane  Earth’s tilted rotation axis is explained  As Moon’s surface solidified, stray fragments from original collision created craters that blanket highlands  A few of the lar ...
Space 4 Space_Decoder
Space 4 Space_Decoder

... Which conclusion is supported by the diagram? A. The Moon does not produce its own light. B. The Sun produces all of the energy in the solar system. C. The Moon and the Sun are always lined up the same way. D. Sunlight would not be possible without moonlight. ...
TEKS 8.10 B - UNT College of Education
TEKS 8.10 B - UNT College of Education

... The seasons are caused by the distance the Earth is from the Sun. ...
How Did the Moon Form? - Lunar and Planetary Institute
How Did the Moon Form? - Lunar and Planetary Institute

... • If the Moon formed somewhere with less iron, how should its density compare to Earth’s? [It should have a lower density.] • How should the Moon’s orbital plane compare to Earth’s and other planets in this model? [The Moon might orbit the Earth in a different plane or the same plane that Earth and ...
GRAVITATION
GRAVITATION

... (1564-1642) who recognised the fact that all bodies, irrespective of their masses, are accelerated towards the earth with a constant acceleration. It is said that he made a public demonstration of this fact. To find the truth, he certainly did experiments with bodies rolling down inclined planes and ...
CONTENTS OF THE SOLAR SYSTEM DATABASE
CONTENTS OF THE SOLAR SYSTEM DATABASE

... Mercury would be very hot. However, only half of Mercury – the half turned toward the Sun – is very hot. Temperatures on the side of Mercury facing the Sun soar to 420 (NASA JPL) degrees Celsius. As you know, water boils at 100 degrees Celsius, so you can imagine how hot this is. However, the dark s ...
Educator`s Guide for Oasis in Space
Educator`s Guide for Oasis in Space

... water to form and survive. Of these three, liquid water is the most elusive and precious compound in our solar system. Other planets receive energy from the sun and internal forces, and there is plenty of carbon, the basic building block of life on Earth, available. There is even a great deal of fro ...
Chaos in the Solar System
Chaos in the Solar System

... Fig.2). The secular equations were also slightly readjusted and integrated over the same time (sec2001 in Fig.2). In all cases, the resonant argument corresponding to (s4 − s3 ) − 2(g4 − g3 ) was in libration over 30 Myr. The transition to circulation occurred at 30 Myr and about 40 Myr for sec2001 ...
Earth and Moon [5th grade] - Digital Commons @ Trinity
Earth and Moon [5th grade] - Digital Commons @ Trinity

... 4. ____________________is a force that pulls objects toward each other. 5. An _______________________ is the path one object takes around another object. 6. One trip around the sun is called a _______________________. 7. One revolution around the sun is the planet’s _____________. 8. TRUE or FALSE P ...
The Cosmic Perspective Formation of the Solar System
The Cosmic Perspective Formation of the Solar System

... Property 2: The Jovian planets are significantly larger and massive than the Terrestrial planets. Property 3: All planets orbit the sun in the same direction and their orbits are near the ecliptic plane. Property 4: The terrestrial planets orbit significantly closer to the sun that the Jovian planet ...
Phases of the Moon - Michigan State University
Phases of the Moon - Michigan State University

... not being visible, to slowly “appearing” from the right side until it is a full circle, and then slowly “disappearing” from the left side until it is not visible once again. Discussion As this activity illustrates, rather than being caused by the shadow of the earth or the sun, the phases of the moo ...
solar system - Math/Science Nucleus
solar system - Math/Science Nucleus

... large of the Earth. Mars has two tiny bodies orbiting Mars discovered in 1877 by Asaph Hall and named Phobos and Deimos. The darker areas of Mars, call maria change during the Martian season. The spring darkening is due to winds blowing fine bright dust off darker rocks. Dust storms have been observ ...
Earth-Mars Interplanetary Transport System Brian Dodson The issue
Earth-Mars Interplanetary Transport System Brian Dodson The issue

... (ITN). The ITN is a network of low-energy pathways connecting planets and moons in the Solar System. These pathways allow one to transfer between most bodies in the Solar System using very small expenditures of fuel, but involve rather long transit times. Still, they are useful for launch of deep-sp ...
The Inner Worlds - Stockton University
The Inner Worlds - Stockton University

... – has not cleared the neighborhood around its orbit, and – is not a satellite. ...
Lecture19-ASTA01 - University of Toronto
Lecture19-ASTA01 - University of Toronto

... • However, careful model calculations show that Mercury contains even more iron than would be expected from its position in the solar system. ...
Our View of the SS - MMSD Planetarium
Our View of the SS - MMSD Planetarium

... Very few students, and adults for that matter, have a good concept of where the planets would be found in the Solar System beyond a simple, straight-line model. They wrongly assume that Venus and Mars are always the closest planets to the Earth. Their misconceptions become obvious by their questions ...
Stellarium Motions Of The Planets Lab DOCX
Stellarium Motions Of The Planets Lab DOCX

... epicycle itself moves counterclockwise around the deferent, shade the part of the path along the epicycle in Figure 1 where the planet will exhibit retrograde motion. ...
m09a01
m09a01

... The Moon is much less dense than the Earth, which means that its core must be very small. Results from Lunar Prospector experiments confirmed the Moon’s small core in 1999, indicating that the core is less than 4% of the Moon’s total mass. The Earth’s core, for comparison, is about 30% of the Earth ...
Chapter VII. Rotating Coordinate Systems
Chapter VII. Rotating Coordinate Systems

... Because the forces acting on the particle are central, the torque is zero – there is no torque in the east-west direction, therefore, the particle conserves angular momentum. So, if R increases, what will happen to the velocity? Initially, it has no motion tangential to the direction of rotation. Th ...
Science Program — Key Stage 2
Science Program — Key Stage 2

... Do you like maths? It was a mathematician who discovered the planet Neptune, not an astronomer. Actually, two different mathematicians were trying to figure out why Uranus’s orbit was different than astronomers predicted. They hypothesised that there must be another planet affecting the orbit and – ...
Lecture14.v1 - Lick Observatory
Lecture14.v1 - Lick Observatory

... • Removal of most of Mercury’s crust by collision • Collision made Venus rotate backwards • Collision tipped Uranus onto its side (now rotates at 90 deg to rotation axes of all other planets) • “Late Heavy Bombardment” (~3.9 billion years ago) from Lunar ...
QUIZ: Formation of the Solar System
QUIZ: Formation of the Solar System

... d. The planets each formed from the collapse of their own separate nebulae. 2. Strong evidence for the existence of planetary systems in the process of formation around other stars comes from a. Photographs and infrared observation of disks of gas and dust. b. Direct photography of star and planet f ...
Worksheet
Worksheet

... Tides Pre-Test & Post-Test How long does it take the Moon to complete a cycle of phases or a lunar month (new moon to new moon)? A. 15 days B. 29.5 days C. One year D. 365 ¼ days ...
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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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