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Lunar Sample Science Today 3
Lunar Sample Science Today 3

... once thought to have come from the Moon, have proven to be of terrestrial origin. Can chemical signatures like these be used to tell whether we have samples of other planets in meteorite collections? We have discovered the bombardment history of the Moon by careful radiometric age dating of lunar sa ...
Solar System - Tri-City
Solar System - Tri-City

... •  Use the age of meteorites to estimate age of solar system think it formed 4.6 billions years ago •  Currently accepted model is the nebular hypothesis •  Nebula – large cloud of dust and gas in space •  Hypothesis states that planets formed when small particles in a nebula collided and stuck toge ...
Newton`s Gravity Applied (PowerPoint)
Newton`s Gravity Applied (PowerPoint)

... Special flights in aircraft can give rise to brief episodes of weightlessness at the ‘top of the arc’ This is used in moviemaking: see “Apollo 13” and also https://www.youtube.com/watch?v=LWGJA9i18Co https://www.youtube.com/watch?v=Gsnyqu7xq9c ...
Glossary from “The Wizard from Space”
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... much larger. Cooler stars have a surface temperature of a few thousand degrees, the sun has a surface temperature of 6000 degrees, while the hottest stars have surface temperatures of 100 000 degrees, or more. Stellar Nursery – A nebula could be called a “stellar nursery” as this is where stars and ...
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Flat Earth FE / Scientists “don`t know” Anything about Creation
Flat Earth FE / Scientists “don`t know” Anything about Creation

... suppositions together. No mortal eyes have ever seen the earth from outer space; only the Torah-Bible reports a lot of science from the metaphysical Heh Dimension, which could widen knowledge horizons. If we use the oldest Genesis report, we must not ignore the sequence of the seven creation-day cyc ...
Mini Solar System
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... unimaginable distances between the planets in our Solar System. Voyager II, traveling at nearly 50,000 mph took 12 years to reach the planet Neptune. We can make a scale model of the distances between the planets using almost anything as our reference. In doing so, we may be able to determine a vari ...
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50 FACTS about SPACE

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... planets such as incredibly hot Venus, desert-like Mars, and monster-sized Jupiter. In the night sky, the planets appear as only bright points of light because they are so far away. The four planets nearest the Sun are Mercury, Venus, Earth, and Mars. These small, rocky planets are considered part of ...
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Astr 1 010 Spring2Ol2 Quiz 1 Name: (Your score

... 2) Where is the zenith on the celestial sphere? A) 23.5 degrees from the vernal equinox. B) 56 degrees above the ecliptic at all times. c)’90 degrees above the horizon. I5) 34 degrees from the horizon. 3) You are lost but you know that it is the date of the June solstice and the you notice that the ...
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title of lesson plan - Discovery Education

... Begin by leading the class in creating a web of planet facts to tap students' prior knowledge of astronomy topics. When the web is as big as it's going to get, share some basic planet facts with your students: Mercury is closest to the sun, Venus is the hottest planet, Earth is mostly water, Mars is ...
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... Dark matter is matter that emits no detectable radiation but whose presence can be deduced by its gravitational attraction on other bodies. Dark energy is a form of energy (or a cosmological constant) detected by its effect on the expansion of the Universe. It causes the expansion to speed up. The n ...
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... expelling matter which accreted to form planets. Forest Moulton & Thomas Chamberlin (1900) – A star passed close to Sun, pulling away huge filaments of material. Problems: such events are extremely rare. Also material is so hot that it would dissipate into space and not accrete. ...
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... Earth, it affects the oceans on the Earth  They pull on the water that is not attached to the Earth  This pull on the oceans is called the tides  Raising and lowering of the height of the ocean  As the moon moves over the oceans, it will pull on the ...
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... •  There are about 6000 stars you can see with your unaided eye at a dark site •  Limited by: -  size of the human eye: 5 – 7 mm pupil -  the eye’s “integration time” of ~0.1seconds -  resolution of ~ 1 arcmin ...
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100 Apple Solar System

... What is the biggest body in our solar system? . Sun What is the largest planet? Second largest? . Jupiter . Saturn What are the next two, which are relatively close in size? . Uranus . Neptune How do the objects in our solar system compare with each other? ...
september 2013 - Holt Planetarium
september 2013 - Holt Planetarium

... bits and pieces if the comet happens to break apart along the way. While a breakup would be bad news for skywatchers hoping for a great show from ISON, which was billed as a "comet of the century" candidate almost immediately after its discovery in September 2012, it could have a silver lining. If a ...
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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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