Where`s Earth 2.0? - Institute of Astronomy
... system, we have been searching for Earth 2.0. In this talk we’ll explore what makes our own planet Earth such a haven for life and what this really means for the habitability of Earth 2.0. We’ll be talking about our solar system, exoplanet atmospheres, why Earth is covered in water and extinction ev ...
... system, we have been searching for Earth 2.0. In this talk we’ll explore what makes our own planet Earth such a haven for life and what this really means for the habitability of Earth 2.0. We’ll be talking about our solar system, exoplanet atmospheres, why Earth is covered in water and extinction ev ...
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... A collection of gas, stars and dust held together by gravity. About 125 billion galaxies are estimated to exist in the universe What galaxy do we live in? The Milky Way The number of galaxies in the universe According to the textbook, the number of sand grains that would fill a toothpaste cap repres ...
... A collection of gas, stars and dust held together by gravity. About 125 billion galaxies are estimated to exist in the universe What galaxy do we live in? The Milky Way The number of galaxies in the universe According to the textbook, the number of sand grains that would fill a toothpaste cap repres ...
Solar System Unit Review - Parma City School District
... What is a huge ball of very hot, glowing gases in space that can produce it’s own heat? ...
... What is a huge ball of very hot, glowing gases in space that can produce it’s own heat? ...
Week 3 - Emerson Valley School
... star we call the sun. For thousands of years, astronomers have studied the movements of the planets across our solar system. These spherical bodies march across the sky in a predictable way: the length of their days and years remaining reliably constant. Although scientists have learned a great deal ...
... star we call the sun. For thousands of years, astronomers have studied the movements of the planets across our solar system. These spherical bodies march across the sky in a predictable way: the length of their days and years remaining reliably constant. Although scientists have learned a great deal ...
Planetarium Field Guide 2015-2016 Third Grade
... How many planets are there in our solar system? Is it eight or nine? What is the difference between the Sun and the planets? How are the inner planets different than the outer planets? Program: “Nine Planets and Counting” The program takes students on a tour to explore the many objects that populate ...
... How many planets are there in our solar system? Is it eight or nine? What is the difference between the Sun and the planets? How are the inner planets different than the outer planets? Program: “Nine Planets and Counting” The program takes students on a tour to explore the many objects that populate ...
Chapter 1
... meteorites, and probably all of the Kuiper Belt Objects, are remnants of this early accretion or growth stage that never quite clumped into planet-sized bodies • The largest planetary bodies had sufficient gravity to capture gases (primarily hydrogen and helium) from the solar nebula, and became the ...
... meteorites, and probably all of the Kuiper Belt Objects, are remnants of this early accretion or growth stage that never quite clumped into planet-sized bodies • The largest planetary bodies had sufficient gravity to capture gases (primarily hydrogen and helium) from the solar nebula, and became the ...
PHYSICS DEPARTMENT Syllabus: Phys 200 (3 cr
... Our Living Earth Structure of the Earth’s atmosphere (greenhouse effect, ozone layers). Earth’s magnetosphere. Structure of the Earth’s interior. ...
... Our Living Earth Structure of the Earth’s atmosphere (greenhouse effect, ozone layers). Earth’s magnetosphere. Structure of the Earth’s interior. ...
Astronomy 1010 - The University of Toledo
... Every mass attracts every other mass through the force called gravity The force of attraction is directly proportional to the product of their masses The force of attraction is inversely proportional to the distance between the objects ...
... Every mass attracts every other mass through the force called gravity The force of attraction is directly proportional to the product of their masses The force of attraction is inversely proportional to the distance between the objects ...
NAME - Net Start Class
... 17.Using your knowledge of the red-shift (light waves) and picture from 16, which side of the picture represents the red-shift of a planet? (right, left, top, bottom) ...
... 17.Using your knowledge of the red-shift (light waves) and picture from 16, which side of the picture represents the red-shift of a planet? (right, left, top, bottom) ...
The Solar System Planets, Moons and Other Bodies Mercury Venus
... Morning and evening “star” Exhibits phases, like the Moon Rotational motion opposite orbital motion Venusian “day” longer than Venusian “year” Visited by numerous probes Mostly CO2 atmosphere, high temperature and pressure Surface mostly flat but varied ...
... Morning and evening “star” Exhibits phases, like the Moon Rotational motion opposite orbital motion Venusian “day” longer than Venusian “year” Visited by numerous probes Mostly CO2 atmosphere, high temperature and pressure Surface mostly flat but varied ...
Topic 3: Astronomy
... - rotates in the opposite direction of most planets - revolves faster than it rotates - dense atmosphere of CO2 and acids produce extreme greenhouse effect for constant high temperatures Earth - rich nitrogen and oxygen atmosphere - liquid water on surface - one moon Mars - appears as a red star ...
... - rotates in the opposite direction of most planets - revolves faster than it rotates - dense atmosphere of CO2 and acids produce extreme greenhouse effect for constant high temperatures Earth - rich nitrogen and oxygen atmosphere - liquid water on surface - one moon Mars - appears as a red star ...
the Moon? The Moon has no wind or water to erode the craters
... on its axis, causing day and night to quickly follow each other in a short period of time. This is what helps keep temperatures mild enough for life. If Earth rotated more slowly, days would be too long and hot and nights would then be too long and too cold. 12. Be able to draw an illustration to sh ...
... on its axis, causing day and night to quickly follow each other in a short period of time. This is what helps keep temperatures mild enough for life. If Earth rotated more slowly, days would be too long and hot and nights would then be too long and too cold. 12. Be able to draw an illustration to sh ...
Inner Planets - Spokane Public Schools
... anything in the sky except for the Sun and moon. Because of its location between the Sun and Earth, Venus goes through phases as does our moon. Venus is a hostile place. Its atmosphere is carbon dioxide (CO2). The upper clouds are poisonous sulfuric acid. Its surface temperature is approximately 900 ...
... anything in the sky except for the Sun and moon. Because of its location between the Sun and Earth, Venus goes through phases as does our moon. Venus is a hostile place. Its atmosphere is carbon dioxide (CO2). The upper clouds are poisonous sulfuric acid. Its surface temperature is approximately 900 ...
11.2-11.3 PPT
... solar systems mass. The composition of our star is mainly hydrogen gas, the most common element in space. The hydrogen in the sun fuses with helium and radiates this energy outward. ...
... solar systems mass. The composition of our star is mainly hydrogen gas, the most common element in space. The hydrogen in the sun fuses with helium and radiates this energy outward. ...
Bodies of our Solar System
... • With these two measurements scientists can pinpoint objects in space • Zenith refers to the highest point directly overhead ...
... • With these two measurements scientists can pinpoint objects in space • Zenith refers to the highest point directly overhead ...
Lecture 27 (pdf from the powerpoint)
... •fp = the fraction of those stars which have planets •Estimated by Drake as 0.5. It is now known from modern planet searches that at least 10% of sunlike stars have planets, and the true proportion may be much higher, since only planets gas-giant size and larger can be detected with current technolo ...
... •fp = the fraction of those stars which have planets •Estimated by Drake as 0.5. It is now known from modern planet searches that at least 10% of sunlike stars have planets, and the true proportion may be much higher, since only planets gas-giant size and larger can be detected with current technolo ...
Introduction to the EarthESci 100Dr. Albanese, Tuesdays and
... 18. The red shift refers to the tendency of stars to cool and become red in color. 19. Using stellar parallax, astronomers are able to determine the distance to even the most distant stars. 20. Red giants are considerably more massive than blue main-sequence stars. 21. The most massive main-sequence ...
... 18. The red shift refers to the tendency of stars to cool and become red in color. 19. Using stellar parallax, astronomers are able to determine the distance to even the most distant stars. 20. Red giants are considerably more massive than blue main-sequence stars. 21. The most massive main-sequence ...
chapter 13 review
... lunar eclipse visible from Canada every year. Almost an entire hemisphere sees a total eclipse when the Moon enters Earth’s shadow, but only those lucky few in the much smaller Moon’s shadow witness a total solar eclipse. 10. By representing Jupiter’s Great Red Spot as a rectangle, the area would be ...
... lunar eclipse visible from Canada every year. Almost an entire hemisphere sees a total eclipse when the Moon enters Earth’s shadow, but only those lucky few in the much smaller Moon’s shadow witness a total solar eclipse. 10. By representing Jupiter’s Great Red Spot as a rectangle, the area would be ...
File
... A. Sirius must be the closest star to Earth. B. Sirius must be the hottest star in the sky. C. Sirius must be larger and have more energy than any other star in the galaxy. D. Sirius must be very hot, very large, and close to Earth, compared to other stars. ...
... A. Sirius must be the closest star to Earth. B. Sirius must be the hottest star in the sky. C. Sirius must be larger and have more energy than any other star in the galaxy. D. Sirius must be very hot, very large, and close to Earth, compared to other stars. ...
Document
... The Solar System Study Guide 1. The solar system is made of the Sun and its eight planets along with many dwarf planets, moons, asteroids, and comets 2. The known planets in the solar system are: Mercury, Venus, Earth , Mars, Jupiter, Saturn , Uranus, Neptune and what was once known as Pluto is now ...
... The Solar System Study Guide 1. The solar system is made of the Sun and its eight planets along with many dwarf planets, moons, asteroids, and comets 2. The known planets in the solar system are: Mercury, Venus, Earth , Mars, Jupiter, Saturn , Uranus, Neptune and what was once known as Pluto is now ...
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.