Earth`s Moon and Solar System
... Earth is Unique Earth is the only planet that has abundant liquid water The presence of liquid water on Earth may be the reason why living organisms have not been detected elsewhere in the solar system The Earth’s atmosphere is the only planet that has an atmosphere with abundant free oxygen th ...
... Earth is Unique Earth is the only planet that has abundant liquid water The presence of liquid water on Earth may be the reason why living organisms have not been detected elsewhere in the solar system The Earth’s atmosphere is the only planet that has an atmosphere with abundant free oxygen th ...
Clever Catch - American Educational Products
... A telescope is an instrument used to magnify objects far away, and a microscope is an instrument used to magnify microscopic ...
... A telescope is an instrument used to magnify objects far away, and a microscope is an instrument used to magnify microscopic ...
Star project
... have their own gravity and have a fixed position in space. • They are extremely burning hot. • The nearest star to us is the sun. • They are made up of mainly hydrogen and helium, but have a little bit of other elements like oxygen and carbon as well. ...
... have their own gravity and have a fixed position in space. • They are extremely burning hot. • The nearest star to us is the sun. • They are made up of mainly hydrogen and helium, but have a little bit of other elements like oxygen and carbon as well. ...
Star
... 1. Stars are so far away that stellar parallax is too small for naked eye to notice 2. Earth does not orbit Sun; it is the center of the universe Unfortunately, with notable exceptions like Aristarchus, the Greeks did not think the stars could be that far away, and therefore rejected the correct exp ...
... 1. Stars are so far away that stellar parallax is too small for naked eye to notice 2. Earth does not orbit Sun; it is the center of the universe Unfortunately, with notable exceptions like Aristarchus, the Greeks did not think the stars could be that far away, and therefore rejected the correct exp ...
Date - Penn Physics
... www.astronomyplace.com The tutorials in boldface should be completed and submitted prior to class. The movies are strongly recommend. The other online materials and materials from the SkyGazer CD Rom are optional. (The recommended SkyGazer items are listed in the expanded syllabus available on the B ...
... www.astronomyplace.com The tutorials in boldface should be completed and submitted prior to class. The movies are strongly recommend. The other online materials and materials from the SkyGazer CD Rom are optional. (The recommended SkyGazer items are listed in the expanded syllabus available on the B ...
Stars in our Galaxy
... energy and light in stars. – Our sun has very high concentrations of hydrogen, given its’ extremely high temperature. In 1930, scientist theorized that hydrogen fused to make helium because of the extreme temperature thus releasing tremendous amounts of energy. – Years earlier, Albert Einstein theor ...
... energy and light in stars. – Our sun has very high concentrations of hydrogen, given its’ extremely high temperature. In 1930, scientist theorized that hydrogen fused to make helium because of the extreme temperature thus releasing tremendous amounts of energy. – Years earlier, Albert Einstein theor ...
Study Guide: Use your notes and handouts to answer the following
... Neptune (further from Sun than other planets) 3. What are significant characteristics of each planet in our solar system? Mercury is the closest planet to the Sun. Mercury is smallest of current planets. It is covered with craters. Venus, the second planet away from the Sun, is Earth’s closest neigh ...
... Neptune (further from Sun than other planets) 3. What are significant characteristics of each planet in our solar system? Mercury is the closest planet to the Sun. Mercury is smallest of current planets. It is covered with craters. Venus, the second planet away from the Sun, is Earth’s closest neigh ...
Tour of the Universe
... ● 6 of the planets have moons orbiting them. Them bigger ones have more moons than the smaller ones. ● Earth's moon was formed 4.5 billion years ago from material ejected when a collision occurred between a Marssize object and the Earth. Asteroids ● Rocky objects orbiting the Sun with million ...
... ● 6 of the planets have moons orbiting them. Them bigger ones have more moons than the smaller ones. ● Earth's moon was formed 4.5 billion years ago from material ejected when a collision occurred between a Marssize object and the Earth. Asteroids ● Rocky objects orbiting the Sun with million ...
Skywatch Astro Ed Dec13
... of other stars, then hurled into space as the stars died, where they could be incorporated into new stars. Population II stars formed when there were almost no heavier elements around, so they have only tiny amounts of them. But Population I stars, like the Sun, are younger, so they have higher prop ...
... of other stars, then hurled into space as the stars died, where they could be incorporated into new stars. Population II stars formed when there were almost no heavier elements around, so they have only tiny amounts of them. But Population I stars, like the Sun, are younger, so they have higher prop ...
Homework PHY121 (Astronomy
... Stars in a constellation or an asterism appear to be in about the same direction as seen from Earth. They are part of a grouping of stars on the celestial sphere which has a shape which suggested a particular object, animal or person to the people in ancient cultures. Most stars in such groupings, h ...
... Stars in a constellation or an asterism appear to be in about the same direction as seen from Earth. They are part of a grouping of stars on the celestial sphere which has a shape which suggested a particular object, animal or person to the people in ancient cultures. Most stars in such groupings, h ...
Climate Modelling
... enough CO2 and H2O (which is not unlikely), Gliese 581d WOULD be habitable. The first discovered planet in the Habitable zone! ...
... enough CO2 and H2O (which is not unlikely), Gliese 581d WOULD be habitable. The first discovered planet in the Habitable zone! ...
1 Introduction - Instituto de Astrofísica de Canarias
... Our Solar System contains four terrestrial planets, and three of them posses a thin atmosphere. Only one, the Earth, has an atmosphere with an important amount of oxygen coexisting with methane, a pair that indicates an essential property of our planet: life. Living beings are all based on the carbo ...
... Our Solar System contains four terrestrial planets, and three of them posses a thin atmosphere. Only one, the Earth, has an atmosphere with an important amount of oxygen coexisting with methane, a pair that indicates an essential property of our planet: life. Living beings are all based on the carbo ...
Lecture 09
... • We have detected 565 extrasolar planets. • There are 34 stars with two planets, 10 with three, 5 with four, 1 with five, 2 with six, and 1 with eight. • The recently launch Kepler Spacecraft is designed to monitor hundreds of thousands of stars for transiting ...
... • We have detected 565 extrasolar planets. • There are 34 stars with two planets, 10 with three, 5 with four, 1 with five, 2 with six, and 1 with eight. • The recently launch Kepler Spacecraft is designed to monitor hundreds of thousands of stars for transiting ...
Study Guide #3 Answer Key
... relative to the galactic plane. The fact that the Milky Way divides the night sky into two roughly equal hemispheres indicates that our Solar System lies close to the galactic plane. The Milky Way has a relatively low surface brightness, making it difficult to see from any urban or suburban location ...
... relative to the galactic plane. The fact that the Milky Way divides the night sky into two roughly equal hemispheres indicates that our Solar System lies close to the galactic plane. The Milky Way has a relatively low surface brightness, making it difficult to see from any urban or suburban location ...
Unit 1
... – Radiation carries away energy in regions where the photons are not readily absorbed by stellar gas – Close to the cores of massive stars, there is enough material to impede the flow of energy through radiation ...
... – Radiation carries away energy in regions where the photons are not readily absorbed by stellar gas – Close to the cores of massive stars, there is enough material to impede the flow of energy through radiation ...
Gravitation and Orbital Motion
... partially responsible for the tides of the sea. The Moon pulls on you, too, so if you are on a diet it is better to weigh yourself when this heavenly body is directly overhead! If you have a mass of 85.0 kg, how much less do you weigh if you factor in the force exerted by the Moon when it is directl ...
... partially responsible for the tides of the sea. The Moon pulls on you, too, so if you are on a diet it is better to weigh yourself when this heavenly body is directly overhead! If you have a mass of 85.0 kg, how much less do you weigh if you factor in the force exerted by the Moon when it is directl ...
Stellar Evolution and the HR Diagram – Study Guide
... c. Which is brighter, the sun or a white dwarf? The Sun (but not as hot) d. Is Vega brighter than our sun? Yes e. Is Antares hotter than our sun? No, it’s a giant, class K or M 22. Stars that move off the main sequence first move to the _Giant_ region of the HR diagram. These stars are fusing __heli ...
... c. Which is brighter, the sun or a white dwarf? The Sun (but not as hot) d. Is Vega brighter than our sun? Yes e. Is Antares hotter than our sun? No, it’s a giant, class K or M 22. Stars that move off the main sequence first move to the _Giant_ region of the HR diagram. These stars are fusing __heli ...
Quiz 2 material 104
... 2.3 Stars and Planets (page 31): Nuclear fusion creates stars. Stars can be various sizes and go through various stages. Our Sun is an ordinary star (see Hertsprung-Russell figure 2.9 and note where the Sun plots on the diagram) powered by hydrogen fusion. The lifecycle of our Sun is described in th ...
... 2.3 Stars and Planets (page 31): Nuclear fusion creates stars. Stars can be various sizes and go through various stages. Our Sun is an ordinary star (see Hertsprung-Russell figure 2.9 and note where the Sun plots on the diagram) powered by hydrogen fusion. The lifecycle of our Sun is described in th ...
The Study of the Universe
... 19. How many phases are there in the lunar cycle? Name each one. 20. What is the cause of the spring tides? Do these tides occur only in the spring season? 21. Do the stars that make up constellations change their position over time? How might this change their position over time? How might this cha ...
... 19. How many phases are there in the lunar cycle? Name each one. 20. What is the cause of the spring tides? Do these tides occur only in the spring season? 21. Do the stars that make up constellations change their position over time? How might this change their position over time? How might this cha ...
HW2_Answers
... 3. Kepler found that the farther a planet was from the Sun, the slower it moved in its orbit. Use what you have learned about an orbit and the Newton’s law of Gravity to explain why Jupiter cannot orbit the Sun as fast as the Earth. Jupiter is farther from the Sun than the Earth. Because of this, th ...
... 3. Kepler found that the farther a planet was from the Sun, the slower it moved in its orbit. Use what you have learned about an orbit and the Newton’s law of Gravity to explain why Jupiter cannot orbit the Sun as fast as the Earth. Jupiter is farther from the Sun than the Earth. Because of this, th ...
Unit 11 Vocabulary
... 10. black hole - a place in space where gravity pulls so much that even light can’t get out. The gravity is so strong because matter has been squeezed into a tiny space. 11. Nebula - a cloud of gas and dust in space. Some nebulae are regions where new stars are being formed, while others are the rem ...
... 10. black hole - a place in space where gravity pulls so much that even light can’t get out. The gravity is so strong because matter has been squeezed into a tiny space. 11. Nebula - a cloud of gas and dust in space. Some nebulae are regions where new stars are being formed, while others are the rem ...
Online STUDY QUESTIONS #8 — ANSWERS 1. Mercury moves
... 5. A parsec is a unit of measurement based on the distance of a star that subtends an angle of 1 arcsec with the radius of the earth's orbit as a baseline. It is equal to about 3.26 light-years. 6. According to Kepler's first law, the orbits of the planets are in the shape of a. a cone b. an ellipse ...
... 5. A parsec is a unit of measurement based on the distance of a star that subtends an angle of 1 arcsec with the radius of the earth's orbit as a baseline. It is equal to about 3.26 light-years. 6. According to Kepler's first law, the orbits of the planets are in the shape of a. a cone b. an ellipse ...
Astronomy Final Study Guide – Name: **This will be the biggest test
... 25. Describe how new stars form. How might supernovas and planetary nebulae contribute to new star formation? ...
... 25. Describe how new stars form. How might supernovas and planetary nebulae contribute to new star formation? ...
ASTR 101 Final Study Guide Use as a guide to the topics as you
... Very cold due to a very weak greenhouse effect Largest Volcano in the solar system: Olympus Mons Polar caps shrink up in size during certain times due to extreme seasonal changes The Red surface color comes from the iron minerals in its surface rocks There is evidence of water being present at some ...
... Very cold due to a very weak greenhouse effect Largest Volcano in the solar system: Olympus Mons Polar caps shrink up in size during certain times due to extreme seasonal changes The Red surface color comes from the iron minerals in its surface rocks There is evidence of water being present at some ...
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.