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Earth Science CA Standard Study Guide
Earth Science CA Standard Study Guide

... the planets where forming. There are two types of planets the inner(terrestrial) and the outer (gas planets) The terrestrial planets are rocky and have a solid surface The terrestrial planets from the Sun are Mercury, Venus, Earth, and Mars The gas planets also known as the gas giants are very large ...
Exploring the Asteroids
Exploring the Asteroids

... Three faces of Vesta? Image at top left is an actual Hubble Space Telescope image of Vesta, the groovily-coloured image is a relief map based on the first image and the top right image is a model of Vesta approximating a close-up view of the asteroid. Vesta orbits about 2.4 AU from the Sun (1 AU = 1 ...
Armillary Sphere (1:1)
Armillary Sphere (1:1)

... projection of this tilted motion onto the equator is slower than its mean motion. However, when the Sun is at both solstices, it moves parallel to the equator. Therefore the projection of this parallel motion onto the equator is faster than its mean motion. Even within the same time zone, people in ...
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 ...
PDF only - at www.arxiv.org.
PDF only - at www.arxiv.org.

... result (e.g., excluding a planet larger than Earth in the habitable zone) will require several observations. Dynamical analyses of RV, astrometric, and/or early imaging data can improve the observational efficiency by predicting times and rotation angles most favorable for detecting and excluding pu ...
Exercise Solutions
Exercise Solutions

... confirming that H has a very low abundance in the Sun. (b) In the visible spectrum the continuum absorption from neutral hydrogen is dominated by excitations from the third quantum level (Paschen transitions to the continuum; see Exercise 2.10). The third quantum level in hydrogen is at 12.1 eV rela ...
Lecture 7
Lecture 7

... are quite red---their star-forming phase is nearly over, and their average stars are quite old. Sd’s in contrast have a lot of gas and have a long life of star forming ahead. They look clumpy because their light is dominated by young stars, which form in clumps of interstellar gas. (These stellar cl ...
S T A R S
S T A R S

... These constitute a whole band of objects that have been detected. Most are in the size range of 100-500km. About 90% are in a roughly circular orbit beyond Neptune. Another scattered band exists in an inclined elliptical orbit and extends out to about 200AU. These are more than another asteroid belt ...
Chronometry of Meteorites and the Formation of the Earth and Moon
Chronometry of Meteorites and the Formation of the Earth and Moon

... with Pb loss from Earth’s mantle 50–150 My after CAI formation (Wood and Halliday 2010). It has been a matter of much debate as to whether Pb was lost to the core or to space. More extreme is the proposal by Albarède (2009) that the U–Pb systematics of the bulk silicate Earth reflect the late additi ...
Uranus
Uranus

... reflector (it took him over 200 attempts to make it!) – Prior to its discovery, Uranus had been seen, but not recognized as a planet (it had been designated 34 Tauri) ...
introduction to astronomy
introduction to astronomy

... Performance Standards Competence will be demonstrated: o ...
exploring the solar system, the galaxies, and the
exploring the solar system, the galaxies, and the

... b. Compare the similarities and differences of planets to the stars in appearance, position, and number in the night sky. c. Explain why the pattern of stars in a constellation stays the same, but a planet can be seen in different locations at different times. d. Identify how technology is used to o ...
Theme 5: The Rise of the Telescope:
Theme 5: The Rise of the Telescope:

DEU 5e Chapter 1 Lecture PPT
DEU 5e Chapter 1 Lecture PPT

... Moon’s shadow travels along the eclipse path in a generally eastward direction across Earth’s surface. ...
Uranus and Neptune Uranus Saturn Neptune
Uranus and Neptune Uranus Saturn Neptune

... B.asteroids that pass closer to the Sun than Earth's orbital distance. C.a region in the asteroid belt where all the Kuiper family objects orbit the Sun. D.mostly of small, icy planetesimals that formed just beyond Jupiter and were scattered outward just beyond the orbit of Neptune by gravitational ...
17 The Deaths of Stars
17 The Deaths of Stars

3. Solar Neutrinos
3. Solar Neutrinos

...  Population I: heavy element rich star  temperature  in the core: up to 15.7 million K  on the surface: ≈ 5,800K ...
Dwarf Planets
Dwarf Planets

... Recent search : dwarf planets, dwarf planets in our solar system, dwarf planets definition, dwarf planets song, dwarf planets facts, dwarf planets list, dwarf planets in the solar system, dwarf planets in the kuiper belt, dwarf planets orbit, dwarf planets pluto, DWARF PLANET - WIKIPEDIA Thu, 13 Apr ...
Lecture 10: Stellar Evolution
Lecture 10: Stellar Evolution

... Role of Mass •  A star’s mass determines its entire life story because it determines its core temperature •  High-mass stars with >8MSun have short lives, eventually becoming hot enough to make iron, and end in supernova explosions •  Low-mass stars with <2MSun have long lives, never become hot e ...
Astronomy Assignment #1
Astronomy Assignment #1

... with a diameter of 1.23 solar diameters. Alpha Centauri B is (60/85) = 0.706 times smaller than Alpha Centauri A. based on the ratio of their angular sizes (and the fact that they are at the same distance). So Alpha Centauri B is slightly smaller than the Sun with a diameter of 0.867 solar diameters ...
Pluto
Pluto

... Percival Lowell. Lowell and his colleagues conducted a photographic search for such a planet for years without success. The search resumed in 1929, thirteen years after Lowell’s death. Clyde W. Tombaugh 2, a young astronomer, was hired to take an exhaustive series of photographs and to examine them ...
Moons - Stargazers Lounge
Moons - Stargazers Lounge

... (Image courtesy of NASA/JPL/Space Science Institute) This is Iapetus, 1470 km in diameter. It is Saturn’s outermost large satellite and was discovered in 1671 by Giovanni Domenico Cassini (after whom the Cassini orbiter spacecraft is named). All Cassini could see of Iapetus through his telescope was ...
April News Letter - Boise Astronomical Society
April News Letter - Boise Astronomical Society

... predecessor, Pioneer 10, Pioneer 11 was targeted for Saturn after its Jupiter encounter. During its flyby of Saturn in 1979, the spacecraft narrowly avoided a collision with the moon Epimetheus, an unknown satellite back in 1979. Because of Jupiter’s distance from the sun, Pioneer 11 relied on nucle ...
page0103.pdf
page0103.pdf

... explain the Hertzsprung-Russell diagram and how it relates to stellar evolution. To explain the stages of stellar evolution as the ...
Motions of Earth, the Moon, and Planets
Motions of Earth, the Moon, and Planets

... model. In 1610 he used the telescope he invented to observe four moons orbiting Jupiter. A planet with other celestial objects orbiting it did not conform to the geocentric model, so many astronomers of the time did not believe his discoveries. Galileo’s further observations of other planets, especi ...
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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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