View PDF - Sara Seager
... too hot, not too cold, but just right for surface liquid water (14). Venus, 30% closer to the Sun than Earth and receiving 90% more radiation from the Sun, may have had liquid water oceans billions of years ago, as possibly implied by the elevated deuterium/hydrogen (D/H) ratio in the venusian atmos ...
... too hot, not too cold, but just right for surface liquid water (14). Venus, 30% closer to the Sun than Earth and receiving 90% more radiation from the Sun, may have had liquid water oceans billions of years ago, as possibly implied by the elevated deuterium/hydrogen (D/H) ratio in the venusian atmos ...
I. What is an Exoplanet?
... VIII. Habitability: Can Exoplanets Sustain Life ??? NASA ‘s suggested criteria: i) extended regions of liquid water, ii) conditions favourable for the assembly of complex organic molecules and, iii) energy sources to sustain metabolism. Habitable Zone (HZ): The region around a star where the tempera ...
... VIII. Habitability: Can Exoplanets Sustain Life ??? NASA ‘s suggested criteria: i) extended regions of liquid water, ii) conditions favourable for the assembly of complex organic molecules and, iii) energy sources to sustain metabolism. Habitable Zone (HZ): The region around a star where the tempera ...
Codes of Life
... start to use helium as a fuel producing carbon. It also begins burning hydrogen in its atmosphere and will expand 100 times to become the red giant • When this happens to our Sun (in about 4 billion years) all inner planets and the Earth will be incinerated. ...
... start to use helium as a fuel producing carbon. It also begins burning hydrogen in its atmosphere and will expand 100 times to become the red giant • When this happens to our Sun (in about 4 billion years) all inner planets and the Earth will be incinerated. ...
ASTRONOMY CURRICULUM Unit 1: Introduction to Astronomy
... Nuclear reactions within stars create the radiation emitted and are fueled by hydrogen and/or helium, depending of the life stage of the star. A star’s characteristics, such as parallax, luminosity, apparent and absolute brightness (magnitude), size, and temperature, can be measured. The Hertzsprung ...
... Nuclear reactions within stars create the radiation emitted and are fueled by hydrogen and/or helium, depending of the life stage of the star. A star’s characteristics, such as parallax, luminosity, apparent and absolute brightness (magnitude), size, and temperature, can be measured. The Hertzsprung ...
ASTRONOMY CURRICULUM Unit 1: Introduction to Astronomy
... Students will finish the course by focusing on the interactions of the earth with the moon and sun. They will review nuclear fusion and discuss its role in defining characteristics of the sun. They will learn about the various dynamic layers of the sun, and how the atomic interactions vary from laye ...
... Students will finish the course by focusing on the interactions of the earth with the moon and sun. They will review nuclear fusion and discuss its role in defining characteristics of the sun. They will learn about the various dynamic layers of the sun, and how the atomic interactions vary from laye ...
Gravity (Chapter 11) Kepler`s Laws - FSU
... The mass, which enters the force law, is called inertial mass, F = mI a , whereas the mass, which enters the gravitational law, is called gravitational mass, F~12 ...
... The mass, which enters the force law, is called inertial mass, F = mI a , whereas the mass, which enters the gravitational law, is called gravitational mass, F~12 ...
Topic: Creation – God`s Greatness Seen in the Heavens
... Creation shows us that God is great. When God created the universe, He not only created our solar system. God in His greatness has created countless of solar systems and galaxies. Who could have created all of these? Only someone who is great! ...
... Creation shows us that God is great. When God created the universe, He not only created our solar system. God in His greatness has created countless of solar systems and galaxies. Who could have created all of these? Only someone who is great! ...
Historical Astronomers - Clayton State University
... Knew there must be a simpler model. Copernicus was able to explain the motions of planets, including retrograde motion by using a Heliocentric Model of the Universe. His model was based on the idea that the Sun is the center of the Universe and everything, including the Earth, goes around the Sun. C ...
... Knew there must be a simpler model. Copernicus was able to explain the motions of planets, including retrograde motion by using a Heliocentric Model of the Universe. His model was based on the idea that the Sun is the center of the Universe and everything, including the Earth, goes around the Sun. C ...
4th Grade Science Study Guide 2010
... Planets (In order from distance from the sun.) Mercury- Smallest planet. Mercury is extremely hot on the side facing the sun and extremely cold on the side that is away from the sun. Venus- Venus is similar to the size of Earth. Venus has acid clouds that trap the sun’s heat, which makes it very hot ...
... Planets (In order from distance from the sun.) Mercury- Smallest planet. Mercury is extremely hot on the side facing the sun and extremely cold on the side that is away from the sun. Venus- Venus is similar to the size of Earth. Venus has acid clouds that trap the sun’s heat, which makes it very hot ...
PDF
... 2. An imaginary line drawn throught the earth from the North to the South pole. 3. This planet is between Saturn and Neptune. 4. A sun seen from a great distance. 6. On earth the sun appears to rise in the ___. 7. Gravity on this is one sixth of what it is on earth. It takes 28 days to go round the ...
... 2. An imaginary line drawn throught the earth from the North to the South pole. 3. This planet is between Saturn and Neptune. 4. A sun seen from a great distance. 6. On earth the sun appears to rise in the ___. 7. Gravity on this is one sixth of what it is on earth. It takes 28 days to go round the ...
Chapter 29 Our Solar System
... 3. Relate gravity to the motions of celestial bodies. This means I can: Describe how mass, center of mass, and distance between 2 objects affects their gravitational pull on each other. 4. Compare and contrast the properties of the terrestrial planets. This means I can: a. Name the terrestrial plane ...
... 3. Relate gravity to the motions of celestial bodies. This means I can: Describe how mass, center of mass, and distance between 2 objects affects their gravitational pull on each other. 4. Compare and contrast the properties of the terrestrial planets. This means I can: a. Name the terrestrial plane ...
Small angle equation:
... Energy available through gravitational contraction ~ ½ gravitational energy = GM2/2R. ...
... Energy available through gravitational contraction ~ ½ gravitational energy = GM2/2R. ...
Chapter 25 - OG
... Red Supergiant - core contracts – causes temp to increase then COOLS Supernova : outer portion of star explodes (def = huge explosion that destroys a star) ▪ Neutron Star – consists only of Neutrons in dense core ▪ Black Hole – core collapses until there is no volume – gravity so great nothing c ...
... Red Supergiant - core contracts – causes temp to increase then COOLS Supernova : outer portion of star explodes (def = huge explosion that destroys a star) ▪ Neutron Star – consists only of Neutrons in dense core ▪ Black Hole – core collapses until there is no volume – gravity so great nothing c ...
Our solar system - astronomyuniverse
... Earth formed, only rocky material could stand the great heat. Icy matter settled in the outer region of the disk along with rocky material, where the giant planets like Jupiter formed. As the cloud fell in, the center got so hot that it became a star, the Sun, and blew most of the gas and dust of th ...
... Earth formed, only rocky material could stand the great heat. Icy matter settled in the outer region of the disk along with rocky material, where the giant planets like Jupiter formed. As the cloud fell in, the center got so hot that it became a star, the Sun, and blew most of the gas and dust of th ...
16 October 2006
... Another interesting pattern . . . • Uranium 238 (half-life 4.5 billion years) is 140 times more common than uranium-235 (half-life 0.7 billion years). Other isotopes of uranium are not found on earth, although some have half-lives in the millions of years. • Elements heavier than uranium do not occ ...
... Another interesting pattern . . . • Uranium 238 (half-life 4.5 billion years) is 140 times more common than uranium-235 (half-life 0.7 billion years). Other isotopes of uranium are not found on earth, although some have half-lives in the millions of years. • Elements heavier than uranium do not occ ...
pdf - Starchitect
... first: these can’t support life, but they can help shield planets from asteroids and comets that could lead to extinction events. Moons come next, since they are often formed over material that didn’t collapse into the main planet. There is a hidden Feat here: if a player tries to create a moon too ...
... first: these can’t support life, but they can help shield planets from asteroids and comets that could lead to extinction events. Moons come next, since they are often formed over material that didn’t collapse into the main planet. There is a hidden Feat here: if a player tries to create a moon too ...
Chapter 17 Solar system.pmd
... 10. State whether the following statements are ‘True’ or ‘False’. (a) The planet nearest to us is Jupiter. (b) All the stars are at the same distance from us. (c) The planets do not emit light of their own. (d) The planets keep changing their position with respect to stars. (e) The planet Venus appe ...
... 10. State whether the following statements are ‘True’ or ‘False’. (a) The planet nearest to us is Jupiter. (b) All the stars are at the same distance from us. (c) The planets do not emit light of their own. (d) The planets keep changing their position with respect to stars. (e) The planet Venus appe ...
IMPORTANT HISTORICAL DATES AND EVENTS
... The planets where shaped by the nearby sun and ended up rocky, small and dense, with at least one, Earth, orbiting at just the right distance to hold on to watery oceans and host the chemical of life. The planets can be divided up into two groups of four. Closest to the sun are the four inner planet ...
... The planets where shaped by the nearby sun and ended up rocky, small and dense, with at least one, Earth, orbiting at just the right distance to hold on to watery oceans and host the chemical of life. The planets can be divided up into two groups of four. Closest to the sun are the four inner planet ...
A105 –Stars and Galaxies
... Estimate the period of the orbit (the time for one complete orbit, or the time between maximums (or minimums) in the velocity curve). What is the length of the “year” of 51 Peg’s planet? Next, estimate the mass of 51 Peg’s planet. The following graph relates the mass of the planet to the range of ve ...
... Estimate the period of the orbit (the time for one complete orbit, or the time between maximums (or minimums) in the velocity curve). What is the length of the “year” of 51 Peg’s planet? Next, estimate the mass of 51 Peg’s planet. The following graph relates the mass of the planet to the range of ve ...
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.