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early astronomical history
early astronomical history

... – Ptolemy of Alexandria improved the geocentric model by assuming each planet moved on a small circle, which in turn had its center move on a much larger circle centered on the Earth – The small circles were called epicycles and were incorporated so as to explain retrograde motion – Ptolemy’s model ...
space jeopardy - Issaquah Connect
space jeopardy - Issaquah Connect

... The Earth orbits the Sun so we are in different locations of our solar system throughout the year causing us to see different constellations ...
Question 2 (7-1 thru 7-4 PPT Questions)
Question 2 (7-1 thru 7-4 PPT Questions)

... based on the distances and periods of revolution of these planets’ natural satellites. ...
14_creationism
14_creationism

... 6000 years old (not 4.6 billion years old). Organisms don’t evolve, they were created, complete, by god. Lots of evidence that Earth is much older then 6000 years and you can watch organisms evolve in the laboratory. Example “god created that rock only 6000 years ago but he made it look old and put ...
Planet Hunters
Planet Hunters

... of several hundred worlds, but astronomers have never given up the combined efforts of many hard-working scientists and brilliant young dream of seeing such worlds directly. Such observations would let planet hunters. Maybe they’ll even be answered by some of you! i us find new planets with a single ...
Level 1 Solar system, Planets, Sun, Asteroid belt, Kuipler belt and
Level 1 Solar system, Planets, Sun, Asteroid belt, Kuipler belt and

... 2. Our solar system is made up of the sun and everything that travels around it. This includes eight planets and their natural satellites such as Earth's moon; dwarf planets such as Pluto and Ceres; asteroids; comets and meteoroids 3. The sun is the center of our solar system. It contains almost all ...
Pocket Planetarium V17N3.indd
Pocket Planetarium V17N3.indd

... twilight. As well, on the evenings of September 5 & 6, Venus will be less than two degrees above the star, Spica. Saturn will also be close to Venus: From September 16 to 19, the two planets will be less than 4 degrees apart; of course, Venus is the brighter of the two. Jupiter in the morning sky As ...
Explaining Apparent Retrograde Motion
Explaining Apparent Retrograde Motion

... not happen at every new/full Moon 11) Go see the August 2017 total solar eclipse! 12) Planets undergo retrograde motion, where they move backwards (westward) in their path among the stars  natural consequence of Earth lapping them/being lapped 13) Retrograde motion easy to explain in Sun-centered s ...
Earth Does Not Move, The (Shigeharu
Earth Does Not Move, The (Shigeharu

... ea.i'th and can ...
origins of the Universe
origins of the Universe

... other words, it had no facts or evidence to back it up. But in the early 1900’s astronomers started to find evidence that pointed to a Big Bang. • In 1922, astronomer Edwin Hubble observed that the universe was expanding. The most distant galaxies he could see through his telescope were moving away ...
Earth Is Not the Center of the Universe
Earth Is Not the Center of the Universe

... Most of the celestial objects that are part of our solar system are constantly circling our sun. These circling paths are called orbits. All celestial objects have some amount of gravity, the attraction of one mass to another mass. Gravitational force is a measurement of the pull of gravity. Large ...
astronomy - Mr. Barnard
astronomy - Mr. Barnard

... (2) neutron star (4) white dwarf ____5. The explosion of a massive star near the end of its life is known as a (1) nebula (3) nova (2) supernova (4) pulsar ____6. According to our present theories of stellar evolution, our sun will change next into (1) a white dwarf (3) a red giant (2) a black hole ...
Reasons for the Baseball Seasons
Reasons for the Baseball Seasons

... northern and southern hemispheres experience seasonal patterns depending on the amount of direct sunlight hitting north or south of the equator. An area receives the most direct sunlight during the summer season and the least amount of direct sunlight in the winter. When it is summer in the northern ...
Our Place in the Universe
Our Place in the Universe

... As our understanding of what space, time, matter and energy are changes, we may need to revisit this definition, and find one that is more appropriate. We should probably be able to tell how far away something is based upon a known geometry. 1,000 kilometers 1,000,000 kilometers 1,000,000,000 kilome ...
Earth in Space and Beyond - Westmoreland Central School
Earth in Space and Beyond - Westmoreland Central School

... The Solar System • Solar system – includes Sun, 8 planets, many moons & all that revolves around Sun – Formed about 5 billion years ago from a giant cloud of gas and debris – The type of planet formed depends on conditions such as temp. and substances (rock fragments, ice crystals, gases) which ex ...
OUR EARTH AND UNIVERSE --- WHERE WE LIVE (by Charles
OUR EARTH AND UNIVERSE --- WHERE WE LIVE (by Charles

... the earth and broke off a portion of the earth. Eventually, these pieces of earth were pulled together by gravity and also pulled into a rotating orbit by the gravitational force of the earth. Our sun is but one of the billions of stars in a galaxy that we name the Milky Way. The Milky Way galaxy (a ...
The most accepted theory of the origin of the solar system is the
The most accepted theory of the origin of the solar system is the

... liquid. However, since Uranus and Neptune reside in a region where apparently the solar nebula’s density was significantly less, the formation of their cores at their current distance from the Sun is highly implausible. According to the so-called Nice model, Uranus and Neptune initially accreted in ...
ASTRO VOLUME 2 - Global Friendship Through Space Education
ASTRO VOLUME 2 - Global Friendship Through Space Education

... atmosphere. Reaching 20 km in altitude, the gas formed small droplets of concentrated sulphuric acid, like those found in Venus' clouds, which then spread around Earth. The droplets created a haze layer that reflected some of the Sun's rays back into space, cooling the whole planet by about 0.5 degr ...
The End of the World and Architecture
The End of the World and Architecture

... In recent times, there has been a focused concentration on designing green buildings and utilizing renewable sources of energy – all of which are in some way derived from the sun. This paper takes this a step further and asks, what will happen when there is no sun? What will happen when all of resou ...
Science Olympiad Invitational: Reach for the Stars
Science Olympiad Invitational: Reach for the Stars

... 3. What phase of the Moon would it be, if we were on the Moon and observed a Full Earth? 4. State the location of the noon time Sun, in relation to the Earth’s surface, during Winter ...
Document
Document

... USING KEY TERMS The statements below are false. For each statement, replace the underlined term to make a true statement. ...
june 2011 - Holt Planetarium
june 2011 - Holt Planetarium

... Zealand survey that scanned the center of the Milky Way galaxy, revealing evidence for up to 10 freefloating planets roughly the mass of Jupiter. The isolated orbs, also known as orphan planets, are difficult to spot, and had gone undetected until now. The newfound planets are located at an average ...
Astr 3020 Cosmology Samples for Exam 2 Foundations of Modern
Astr 3020 Cosmology Samples for Exam 2 Foundations of Modern

... To explain the motions of the planets, sun, moon and stars, Eudoxus used a) a single sphere rotating at a uniform rate around the Earth. b) a system of 27 spheres whose axis of rotation are tilted with respect to each other, each rotating at a different rate to produce the daily, annual and retrogra ...
june 2011 - Holt Planetarium
june 2011 - Holt Planetarium

... Zealand survey that scanned the center of the Milky Way galaxy, revealing evidence for up to 10 freefloating planets roughly the mass of Jupiter. The isolated orbs, also known as orphan planets, are difficult to spot, and had gone undetected until now. The newfound planets are located at an average ...
modeling astronomy concepts with a gps receiver and
modeling astronomy concepts with a gps receiver and

... 1. What do you notice about the distances of the inner planets (The Terrestial Planets), from each other and from the Sun? 2. What about the outer planets (The Jovian Planets)? 3. If you wanted to place a scale size object at each of these points, what would you think of using (this may be helpful w ...
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Astrobiology



Astrobiology is the study of the origin, evolution, distribution, and future of life in the universe: extraterrestrial life and life on Earth. This interdisciplinary field encompasses the search for habitable environments in our Solar System and habitable planets outside our Solar System, the search for evidence of prebiotic chemistry, laboratory and field research into the origins and early evolution of life on Earth, and studies of the potential for life to adapt to challenges on Earth and in outer space. Astrobiology addresses the question of whether life exists beyond Earth, and how humans can detect it if it does. (The term exobiology is similar but more specific—it covers the search for life beyond Earth, and the effects of extraterrestrial environments on living things.)Astrobiology makes use of physics, chemistry, astronomy, biology, molecular biology, ecology, planetary science, geography, and geology to investigate the possibility of life on other worlds and help recognize biospheres that might be different from the biosphere on Earth. The origin and early evolution of life is an inseparable part of the discipline of astrobiology. Astrobiology concerns itself with interpretation of existing scientific data; given more detailed and reliable data from other parts of the universe, the roots of astrobiology itself—physics, chemistry and biology—may have their theoretical bases challenged. Although speculation is entertained to give context, astrobiology concerns itself primarily with hypotheses that fit firmly into existing scientific theories.The chemistry of life may have begun shortly after the Big Bang, 13.8 billion years ago, during a habitable epoch when the Universe was only 10–17 million years old. According to the panspermia hypothesis, microscopic life—distributed by meteoroids, asteroids and other small Solar System bodies—may exist throughout the universe. According to research published in August 2015, very large galaxies may be more favorable to the creation and development of habitable planets than smaller galaxies, like the Milky Way galaxy. Nonetheless, Earth is the only place in the universe known to harbor life. Estimates of habitable zones around other stars, along with the discovery of hundreds of extrasolar planets and new insights into the extreme habitats here on Earth, suggest that there may be many more habitable places in the universe than considered possible until very recently.Current studies on the planet Mars by the Curiosity and Opportunity rovers are now searching for evidence of ancient life as well as plains related to ancient rivers or lakes that may have been habitable. The search for evidence of habitability, taphonomy (related to fossils), and organic molecules on the planet Mars is now a primary NASA objective on Mars.
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