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Resources: - Real Science
Resources: - Real Science

... Dr Giovanna Tinetti. She is a scientist at the European Space Agency and University College, London. The findings will be published in this week's Nature (July 12). This is the first time that astronomers have been sure there is water on an extrasolar planet. Unfortunately the water is not lying aro ...
Milankovitch Cycles and Glaciation
Milankovitch Cycles and Glaciation

... Today a difference of only about 3 percent occurs between aphelion (farthest point) and perihelion (closest point). This 3 percent difference in distance means that Earth experiences a 6 percent increase in received solar energy in January than in July. This 6 percent range of variability is not al ...
Astro 10: Introductory Astronomy
Astro 10: Introductory Astronomy

... Bipolar flows: common from new stars / solar systems in formation ...
The long hunt for new objects in our expanding solar
The long hunt for new objects in our expanding solar

... "Smiley", it is now catalogued more prosaically as 1992 QB1. Planet Nine from Outer Space The most well-known KBOs are Eris, Sedna and What difference does it make if there is another the dwarf planet Pluto. After flying by Pluto on July planet lurking out there? We're not likely to see it 15, 2015, ...
Lecture9_2014_v2 - UCO/Lick Observatory
Lecture9_2014_v2 - UCO/Lick Observatory

... » Gas giants Jupiter, Saturn just outside “frost line” » Small rocky planets inside » Slowly accreting icy planets in outer system (Uranus, Neptune) ...
Rotary Homework #1
Rotary Homework #1

... 6. Two objects attract each other gravitationally with a force of 2.5 10 10 N when they are 0.25 m apart. Their total mass is 4.0 kg. Find their individual masses. ...
File
File

... 1. Found from ___________ lines 2. At least ___ elements detected so far 3. ___% H; __% He; O, C, N, Si.. B. ______________ (pinkish/red layer) 1. Faint - less _____ than photosphere 2. _______ - thin spikes of matter C. ___________ 1. The upper ___________ of the Sun 2. During a total eclipse, ____ ...
Pre SS1 Models of the Solar System - Bolinas
Pre SS1 Models of the Solar System - Bolinas

... Earth is on the side of its orbit closer to the star Spica, its proximity would make Spica look brighter than it does in winter, when the Earth is on the far side of its orbit. As no such phenomenon is observed, the stars must be very far away, if indeed the Earth orbits the sun. The astonishing thi ...
Ch. 27
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PHYS103 Hour Exam No. 2 Page: 1 1 The time it takes for Jupiter to
PHYS103 Hour Exam No. 2 Page: 1 1 The time it takes for Jupiter to

... 11 When Galileo dropped a wooden ball and a heavier iron ball at the same time, he found that a. sometimes the wooden ball hit …rst, sometimes the iron one hit …rst. b. the wooden ball always hit long before the iron one. c. the iron ball always hit long before the wooden one. d. both balls always h ...
The Dynamics-Based Approach to Studying Terrestrial Exoplanets
The Dynamics-Based Approach to Studying Terrestrial Exoplanets

... 2. Transits are deeper and thus easier to detect. An Earth-sized planet induces transit depths of 1.3 mmag (M4V) and 8.4 mmag (M8V), as opposed to 0.084 mmag (Sun). 3. Transits are more frequent, as the orbital periods for the semi-major axes listed above are only 15 days (M4V) and 2.5 days (M8V). T ...
Lecture 20: Formation of Planets, Exoplanets 3/30
Lecture 20: Formation of Planets, Exoplanets 3/30

... -water may be trapped at beginning in dust grains or come later from comets hitting surface??? • further from star: Gas Giants ices (water H2O, methane CH4) froze out early  larger protoplanets  more material to accrete • comets, meteors, asteroids give clues to composition of early solar system ...
Star clusters and constellations
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... Star clusters are groups of stars that are ‘connected’ by a significant gravitational force ands move around tougher as the galaxy rotates. The motion of the Sun through the galaxy does not affect the appearance of a star cluster from Earth over a long period of time. Examples of star clusters are t ...
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View SKYTRACK_Glossary of Terms

... and Venus) occasionally cross directly in front of the Sun, where they appear as dark dots against the bright disk of the Sun. Tropical year – The length of time that the Sun, as viewed from the Earth, takes to return to the same position along the ecliptic, such as a solstice or equinox. The mean i ...
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... boat, and the boatman thinks that the boat with all on board is standing still, this same thing may hold without doubt of the motion of the earth, and it may seem as if the whole universe revolved. What shall we say, however, of the clouds and other things floating, falling or rising in the air exce ...
Chapter 25 - Taylor County Schools
Chapter 25 - Taylor County Schools

... Mercury has a rocky, crust surface with many craters. This gives it the appearance much like our Moon. Many of these craters were formed when space objects crashed into its surface. The Messenger satellite entering orbit around Mercury. Within the solar system there are (Illustration Courtesy of NAS ...
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Sample - Physics @ IUPUI

... 6) What is the culprit behind the Kirkwood gaps in the main asteroid belt (regions where there are almost no asteroids)? a) orbital resonances with Jupiter b) tidal interactions with the sun c) larger asteroids cleared out these regions d) harmonic resonances created by the sun’s depression of space ...
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Space Exploration Next

... “That’s one small step for man, one giant leap for mankind.” The rocket propelled spacecraft that made the journey to the Moon was Apollo 11, as part of NASA’s ...
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... The visible surface of the Sun is called the (4) ----------·It is the lowest layer of the Sun and is approximately 400 km in thickness. The average temperature is 5800K. Above the visible layer is the (5) --------·It is approximately 2500 km in thickness and has a temperature of nearly 30,000 Kat th ...
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6TH GRADE ACCURATE PLANET SIZES AND DISTANCE FROM

... Dried blueberry or object slightly smaller than chocolate chip - Venus 5 lb. hand weight, optional Background information: The Sun is the star for our solar system. It is much larger than any of the 8 planets that orbit it. Pictures or posters of our solar system are generally too small to accuratel ...
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Solar System Formation

... system had a similar makeup, gas might have escaped the early solar system, so the objection about the density being too low for gravitational collapse went away ...
Earth`s Motion and Seasons
Earth`s Motion and Seasons

... The light from street lights, businesses, and signs make it difficult to objects in the night sky. This is known as light pollution. Round table brainstorm how our community could develop a plan to reduce light pollution. ...
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EARTHSKY Why Earth has 4 seasons Some assume our planet`s

... amounts of land mass and ice sheets in the northern hemisphere make Earth top-heavy. An analogy for obliquity is imagining what would happen if you were to spin a ball with a piece of bubble gum stuck near the top. The extra weight would cause the ball to tilt when spun. Over long periods of geologi ...
Habitability of planets around Red Dwarf Stars
Habitability of planets around Red Dwarf Stars

... composition 0.51 Mo star has 0.077 L (after Lang, 1991) its MS lifetime will be ∼ 6.6 × 13.0 Gyr = 86 Gyr. Moreover (Kartunnen et al., 1994) virtually complete convective overturn in lower mass stars means that a much higher fraction of a star’s hydrogen content will be available as nuclear fuel th ...
PHYS103 Hour Exam No. 2 Preview 2 Page: 1 1 According to
PHYS103 Hour Exam No. 2 Preview 2 Page: 1 1 According to

... 1 According to Newton’s Law of Gravity, the gravitational attraction of the Earth for other objects, such as the Moon, apples on trees and space shuttles in low earth orbit, a. is smaller for objects farther from the Earth but never vanishes entirely. b. is the same no matter where those objects are ...
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Extraterrestrial life



Extraterrestrial life is life that does not originate from Earth. It is also called alien life, or, if it is a sentient and/or relatively complex individual, an ""extraterrestrial"" or ""alien"" (or, to avoid confusion with the legal sense of ""alien"", a ""space alien""). These as-yet-hypothetical life forms range from simple bacteria-like organisms to beings with civilizations far more advanced than humanity. Although many scientists expect extraterrestrial life to exist, so far no unambiguous evidence for its existence exists.The science of extraterrestrial life is known as exobiology. The science of astrobiology also considers life on Earth as well, and in the broader astronomical context. Meteorites that have fallen to Earth have sometimes been examined for signs of microscopic extraterrestrial life. Since the mid-20th century, there has been an ongoing search for signs of extraterrestrial intelligence, from radios used to detect possible extraterrestrial signals, to telescopes used to search for potentially habitable extrasolar planets. It has also played a major role in works of science fiction. Over the years, science fiction works, especially Hollywood's involvement, has increased the public's interest in the possibility of extraterrestrial life. Some encourage aggressive methods to try to get in contact with life in outer space, whereas others argue that it might be dangerous to actively call attention to Earth.
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