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aaaa - Londonderry School District
aaaa - Londonderry School District

... would travel to the poles, no water anywhere else. • If much less - the habitable zone would shrink in size (think narrow band around equator) • The tilt also allows the seasons to occur. ...
The search for Earth-like planets - Creation Ministries International
The search for Earth-like planets - Creation Ministries International

... explain their origins. Star systems with planets generally are very unlike our own solar system, with planets very near their parent stars and some planets having very elliptical orbits. The NASA Planetquest website indicates there are currently 373 extrasolar planets.4 These planets are orbiting 31 ...
Diapozitivul 1
Diapozitivul 1

... Comets are small Solar System bodies, typically only a few kilometres across, composed largely of volatile ices They have highly eccentric orbits Short-period comets have orbits lasting less than two hundred ...
PPT - greenslime.info
PPT - greenslime.info

... Capricorn-23.5°S-at noon) ...
Aug 2015 supplement - Hermanus Astronomy
Aug 2015 supplement - Hermanus Astronomy

... more brilliant sources - both stars and quasars powered by huge black holes started to shine, they cleared away the mist and made the universe transparent to ultraviolet light. Astronomers call this the epoch of reionisation, but little is known about these first galaxies, and up to now they have ju ...
educator guide - In Saturn`s Rings
educator guide - In Saturn`s Rings

... Collection Table above? Does the size of the meteoroid change the size of the crater? [Data will vary, but generally larger rocks make larger craters.] Also, if measured, how does meteoroid size affect crater depth and length of rays? 2. Discuss the difference between meteoroids [rocks in space], m ...
A Human-Powered Orrery - Astronomical Society of the Pacific
A Human-Powered Orrery - Astronomical Society of the Pacific

... Visualizing planetary motions and their relationships to each other is difficult for many learners. In many of our outreach programs over the years, we modeled the motion of the Earth around the Sun and the seasonal constellations, but this did not involve a lot of audience participation. Then, in 2 ...
Lec4_2D
Lec4_2D

... The effects of gravity do not depend on the composition of a body, just its mass and distance. The Moon exerts a force on the Earth, but since the Earth has a finite size, this force is different from one side of the Earth to the other. The side of the Earth near the Moon gets pulled most, the cente ...
The GAIA astrometric survey of extra
The GAIA astrometric survey of extra

... Clearly, our present understanding of the origin of planetary systems is still limited, and more measurements will be needed in order to be able to discriminate among models. To go beyond a simple Catalogue of extra-solar planets, Classification will have to be made on the basis of the knowledge of ...
Dark Skies Above Downeast Maine
Dark Skies Above Downeast Maine

... During  the  month  of  December,  there  will  be  at  least  1  minor  body  that  will  make  a  near     approach  to  the  Earth  within  a  distance  of  10  lunar  distances.  This  closest  approach  will  be   from  the ...
April 2013
April 2013

... commonly produce high-energy γ-rays (gamma radiation). Big Bang nucleosynthesis (BBN) Whether you are a believer or a sceptic concerning the claims that are made for detailed knowledge of the sequence of events immediately following the birth of the universe, few would deny that within a short time ...
From Inner Earth to Outer Space
From Inner Earth to Outer Space

... sensors can provide star positions about 10 times more precisely than measurements made with ground-based telescopes. Scientists use astrometric measurements to help define wobble in the motion of stars that might indicate the presence of a planetary companion (below left). The motions of stars can ...
July - Westchester Amateur Astronomers
July - Westchester Amateur Astronomers

... and Uranus are up in the southern sky before dawn and worth finding if you are up early with your telescope. (Although, there’s a reason why we only have Starways to Heaven in the evening!) Abrams Planetarium notes that Uranus, at magnitude 5.8, is within 1 degree of an orange magnitude 6.2 star whi ...
Earth & Space - Stars - Students, Teachers and Resources
Earth & Space - Stars - Students, Teachers and Resources

... • Astronomers have different theories: – About 5 billion years ago, when the Earth was still very young, it was struck by a Mars-sized planet. This impact could have tipped our planet over. – As the cloud of dust and gas collapsed when the universe was forming, the solar system did not form uniforml ...
6th Grade Winter - Partnership for Effective Science Teaching and
6th Grade Winter - Partnership for Effective Science Teaching and

... Standard 1: Students will understand that the appearance of the moon changes in a predictable cycle as it orbits Earth and as Earth rotates on its axis. Objective 1: Explain patterns of changes in the appearance of the moon as it orbits Earth. a. Describe changes in the appearance of the moon during ...
Document
Document

... glowing band of light that spans the sky on a very clear night.  Understand that the universe contains many billions of galaxies, and each galaxy contains many billions of stars. To the naked eye, even the closest of these galaxies is no more than a dim, fuzzy spot.  U ...
Universal Gravitation
Universal Gravitation

... distance from the Earth the less it will weigh.  No matter how great the distance Earth’s gravity does not drop to zero.  The gravitational influence of every object is exerted through all space. ...
New Indivisible Planetary Science Paradigm J. Marvin Herndon
New Indivisible Planetary Science Paradigm J. Marvin Herndon

... vision of the nature of matter in the Solar System, and dynamics and energy sources of planets. Massive-core planets formed by condensing and raining-out from within giant gaseous protoplanets at high pressures and high temperatures. Earth’s complete condensation included a ~300 Earth-mass gigantic ...
SCI112: Earth Science
SCI112: Earth Science

... The materials that make up earth are continuously being recycled. Important nutrients for living things, as well as the components of rock and minerals, are circulated through earth systems over time. Students examine these nutrient cycles, paying particular attention to carbon and water. The concep ...
Marsbugs Vol. 11, No. 30
Marsbugs Vol. 11, No. 30

... Knowing that time was short, Kastner and Weintraub submitted an emergency request for viewing time on the orbiting Chandra X-ray observatory. Because X-rays are generated by extremely violent events, they provide a critical window for observing extreme stellar flare-ups of this sort. The astronomers ...
Voyage Grade 5-8 Education Unit
Voyage Grade 5-8 Education Unit

... life on other planets—even moons? A starting point is concluding that life as we know it requires liquid water. Given this constraint, in the first Activity students explore a mathematical model for how temperature varies with distance from the Sun. It allows them to find the ‘happy place’ for possi ...
The Spring Night Sky – March, April and May All data sourced from
The Spring Night Sky – March, April and May All data sourced from

... South – Leo and Virgo are well placed for viewing – Saturn is easily found within the body of Virgo – near the bright star Spica – alpha Virginis. Cancer is to the top RHS of Leo. West – Ursa Major is high up with Gemini still visible – but Orion is now setting Meteor Showers There is the April Lyri ...
The Case against Copernicus
The Case against Copernicus

... to that of the sun (below). But Copernicus’s heliocentric theory demands that the stars be extremely far away. This in turn implies that they should be absurdly large—hun­ dreds of times bigger than the sun (bottom). Copernicans could not explain away the anomalous data without appeals to divine ...
Document
Document

... What requirements did we say were necessary for life? How would we look for those in other star systems? ...
Lunar Phases and Eclipses
Lunar Phases and Eclipses

... within Earth’s umbral shadow, indirect sunlight still manages to reach and illuminate it. However, this sunlight must first pass deep through the Earth’s atmosphere which filters out most of the blue colored light. ...
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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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