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Astronomy - cloudfront.net
Astronomy - cloudfront.net

... Based on our understanding of our own solar system, which of the following would be most surprising to observe in an extrasolar system of planets? A. The planets nearest to the star have a lower density than the planets farther out. B. Several planets show large tilts of their rotation axis compare ...
how do the planets affeCt earth?
how do the planets affeCt earth?

... Learning from the planets Scientists have learned a lot from studying the planets. Venus and Mars are planets that are a lot like Earth. If Earth’s atmosphere becomes too polluted, our planet could become like Venus, which is too harsh and hot for life. Space probes have gathered information about a ...
Solar System worksheet
Solar System worksheet

... This is a gas giant that actually spins in its orbit on its side. It is thought that the surface of this planet is so cold that it is made of rock and ice. Average Temperature: -180°C Hours in a Day: 17 SIZE (radius): 25,362km Number of Moons: 27 Neptune This is the smallest of the gas giant planets ...
Document
Document

... the atmosphere has an impact, too – Venus’s atmosphere warms the surface to 750 K, but it would be very warm even without the CO2 – Mercury is closer to the Sun, but still cooler than Venus. – The Moon is cooler than the Earth, even though they are at the same distance from the Sun. ...
Kepler`s Laws - Harnett County High Schools Wiki
Kepler`s Laws - Harnett County High Schools Wiki

... Kepler’s Laws ...
1 HoNoRS227 Examination #3 Name
1 HoNoRS227 Examination #3 Name

... receive the radio signals from such a planet. B Because the star is so close that we should have received radio signals from the planet years ago. C Because the radio signals cannot penetrate the Earth’s atmosphere from outer space. D Because we are able to hear radio waves, this should have been di ...
Powerpoint Presentation (large file)
Powerpoint Presentation (large file)

... Why did Copernicus think that the Earth and the other planets go around the Sun? How did Tycho Brahe attempt to test the ideas of ...
Goal: To understand how Saturn formed and what its core is like
Goal: To understand how Saturn formed and what its core is like

... Additional debris - asteroids • There are regions of space that do not form planets. • One is our asteroid belt. • In this region gravity from Jupiter would have made rocks that hit each other break each other apart instead of make bigger rocks. ...
STREAMing THE SOLAR SYSTEM with Third Grade
STREAMing THE SOLAR SYSTEM with Third Grade

... LESSON REFLECTIONS:  Student Observations: The students were very excited about this lessons. They were astounded by the distance between each planet, especially the outer planets. ...
The Solar System and its Planets
The Solar System and its Planets

... Which part of the IAU definition of a dwarf planet does asteroid Vesta not satisfy? (A) is in orbit around the Sun (B) has sufficient mass for its self-gravity to overcome rigid body forces so that it assumes a hydrostatic equilibrium (nearly round) shape (C) has not cleared the neighbourhood aroun ...
File - Etna FFA Agriculture
File - Etna FFA Agriculture

... How is animal breeding cycles impacted by the rotation of Earth?  Sheep are seasonal breeders, with the majority being short-day breeders that cycle in the fall and lamb in the spring of the year.  However, some breeds of sheep will cycle in the spring and have lambs in the fall.  Through the ey ...
Standard Form - Fastest Planet
Standard Form - Fastest Planet

... Saturn is the second largest planet in the Solar System after Jupiter. Like Jupiter, it is a Gas Giant and so does not have a solid surface. It is famous for its dramatic and beautiful rings. The rings are not solid, but are made up of many millions of small lumps of ice and rock, varying from a fe ...
Astronomy Assignment #5: Newton`s Law of Gravity
Astronomy Assignment #5: Newton`s Law of Gravity

... 10. If the Earth was 3 A.U. from the Sun (instead of 1 A.U.), would the gravity force between the Earth and the Sun be less or more than it is now? By how many times? 11. If Mercury was 0.2 A.U. from the Sun (instead of 0.4 A.U.), would the gravity force between Mercury and the Sun be less or more t ...
Exoplanets. I
Exoplanets. I

... •  r is the radius of the orbit •  P is the orbital period •  V is the orbital velocity How fast does the star “wobble”? Kepler’s 3rd law: P2 = a3 a ~ rp (M* >> Mp) r* = mp/m* rp (center of mass) ...
Astronomy Vocabulary File
Astronomy Vocabulary File

... bringing the sun’s energy to the surface Radiative zone—a very dense region of the sun in which the atoms are so closely packed that light can take millions of years to pass through Core—the center of the sun where the sun’s energy is produced Nuclear fusion—the process by which two or more nuclei w ...
title of lesson plan - Discovery Education
title of lesson plan - Discovery Education

... documentary, a radio play, or a front-page news article. Follow up this activity with a discussion comparing today's space missions with the missions of nearly 40 years ago. ...
How the Universe Works Extreme Stars Name 1. When a star dies
How the Universe Works Extreme Stars Name 1. When a star dies

... How the Universe Works Extreme Stars Name _______________ 1. When a star dies (gravity) (fusion) wins out. 2. The sun will run out of fuel in about (3) (7) (10) billion years. 3. When the sun runs out of hydrogen fuel, it will become a (red giant) (neutron star) (black hole). 4. Eventually, the heli ...
Unit 2 Study Guide (word)
Unit 2 Study Guide (word)

... Served Us Nachos. The beginning of each word in the sentence begins with the same letter of the planet in order from the sun. Inner vs Outer Planets Earth is similar to other planets in many ways. All planets are spheres, rotate on their axis, have gravity, revolve around the sun, have density, and ...
Unit 2 Study Guide - Grant County Schools
Unit 2 Study Guide - Grant County Schools

... Served Us Nachos. The beginning of each word in the sentence begins with the same letter of the planet in order from the sun. Inner vs Outer Planets Earth is similar to other planets in many ways. All planets are spheres, rotate on their axis, have gravity, revolve around the sun, have density, and ...
GRADE-5-SCIENCE_REVISION_PAPER-THIRD_TERM-2014
GRADE-5-SCIENCE_REVISION_PAPER-THIRD_TERM-2014

... b. A Japanese word that means “harbor wave” is ________________ c. Our nearest star is ________________ d. The water in the air below its boiling point is called ___________________ e. The term that means turning water to water vapour is ______________ f. A natural body that moves around a planet is ...
Stars - Independence High School
Stars - Independence High School

... • Reaches Earth at 400 km/s • Particles collide with atmospheric gases to form auroras ...
The Solar System Sections 16.1-16.8
The Solar System Sections 16.1-16.8

... beyond Earth’s atmosphere • Universe – everything, all energy, matter, and space • The Milky Way– one of 50 billion galaxies scattered throughout the universe • Solar System – contains our Sun and 9 planets • Sun – supplies the energy for nearly all life on the planet earth Audio Link Intro ...
VOCAB astronomy File
VOCAB astronomy File

... 56. Dark line spectrum analysis- method of finding star’s composition by comparing an element’s spectrum with the star’s spectrum 57. Hertzsprung-Russell diagram- graphic that shows all the star types and how they change from living to dying stars 58. Main sequence- “living” young stars in the HR di ...
Astronomy from the ancients to the Renaissance
Astronomy from the ancients to the Renaissance

... almost all the manuscripts of the Mayans. The Chinese were more interested in astrology (or at least good luck and bad luck days) than astronomy. For better or for worse, the highlights of ancient astronomy were almost all accomplishments of the Greeks. ...
DOC
DOC

... When our part of the Earth moves around so it is lit by the sun. The path an object takes around another object in space. A shape like a ball. A system of planets which revolve around a star (or sun) Dr. Iffat Sardharwalla ...
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Planetary habitability



Planetary habitability is the measure of a planet's or a natural satellite's potential to develop and sustain life. Life may develop directly on a planet or satellite or be transferred to it from another body, a theoretical process known as panspermia. As the existence of life beyond Earth is unknown, planetary habitability is largely an extrapolation of conditions on Earth and the characteristics of the Sun and Solar System which appear favourable to life's flourishing—in particular those factors that have sustained complex, multicellular organisms and not just simpler, unicellular creatures. Research and theory in this regard is a component of planetary science and the emerging discipline of astrobiology.An absolute requirement for life is an energy source, and the notion of planetary habitability implies that many other geophysical, geochemical, and astrophysical criteria must be met before an astronomical body can support life. In its astrobiology roadmap, NASA has defined the principal habitability criteria as ""extended regions of liquid water, conditions favourable for the assembly of complex organic molecules, and energy sources to sustain metabolism.""In determining the habitability potential of a body, studies focus on its bulk composition, orbital properties, atmosphere, and potential chemical interactions. Stellar characteristics of importance include mass and luminosity, stable variability, and high metallicity. Rocky, terrestrial-type planets and moons with the potential for Earth-like chemistry are a primary focus of astrobiological research, although more speculative habitability theories occasionally examine alternative biochemistries and other types of astronomical bodies.The idea that planets beyond Earth might host life is an ancient one, though historically it was framed by philosophy as much as physical science. The late 20th century saw two breakthroughs in the field. The observation and robotic spacecraft exploration of other planets and moons within the Solar System has provided critical information on defining habitability criteria and allowed for substantial geophysical comparisons between the Earth and other bodies. The discovery of extrasolar planets, beginning in the early 1990s and accelerating thereafter, has provided further information for the study of possible extraterrestrial life. These findings confirm that the Sun is not unique among stars in hosting planets and expands the habitability research horizon beyond the Solar System.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. 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. On 4 November 2013, astronomers reported, based on Kepler space mission data, that there could be as many as 40 billion Earth-sized planets orbiting in the habitable zones of Sun-like stars and red dwarfs within the Milky Way. 11 billion of these estimated planets may be orbiting Sun-like stars. The nearest such planet may be 12 light-years away, according to the scientists.
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