File
... Hypotheses include that its outer layers were stripped off by a giant impact; or, that it was prevented from fully accreting by the young Sun's energy. Venus: Venus (0.7 AU from the Sun) is close in size to Earth (0.815 Earth masses) and, like Earth, has a thick silicate mantle around an iron core, ...
... Hypotheses include that its outer layers were stripped off by a giant impact; or, that it was prevented from fully accreting by the young Sun's energy. Venus: Venus (0.7 AU from the Sun) is close in size to Earth (0.815 Earth masses) and, like Earth, has a thick silicate mantle around an iron core, ...
Alone in the Universe - Let There Be Light : The Book
... systems will have a set of rocky inner planets, with atmospheres produced by outgassing, weathering and escape, for the same reasons that our own rocky inner planets have atmospheres. Judging from our own example, the chances seem good that one of these inner planets will orbit its star at the “righ ...
... systems will have a set of rocky inner planets, with atmospheres produced by outgassing, weathering and escape, for the same reasons that our own rocky inner planets have atmospheres. Judging from our own example, the chances seem good that one of these inner planets will orbit its star at the “righ ...
Celestial Bodies (Mike Stroppa) - Powerpoint
... something small • The Big Bang occurred around 15-20 billion years ago • Formation of stars and galaxies shortly after ...
... something small • The Big Bang occurred around 15-20 billion years ago • Formation of stars and galaxies shortly after ...
WEST ORANGE PUBLIC SCHOOLS
... a straight line and at a constant speed) unless acted upon by an unbalanced force. 2- F=ma (Force=mass x acceleration) 3- For every action there is an equal and opposite reaction. 9. What two forces keep Earth is kept in orbit around the sun? ...
... a straight line and at a constant speed) unless acted upon by an unbalanced force. 2- F=ma (Force=mass x acceleration) 3- For every action there is an equal and opposite reaction. 9. What two forces keep Earth is kept in orbit around the sun? ...
Distances in Space
... Andromeda have exploded as a supernova or gone out long ago. The message of these star finishing events just has not gotten to us yet! ...
... Andromeda have exploded as a supernova or gone out long ago. The message of these star finishing events just has not gotten to us yet! ...
Cosmic Landscape Introduction Study Notes About how
... What do astronomers mean when they say that the Sun is a fairly typical star? Some stars are many times more massive and some many times less massive than the Sun. The Sun orbits the center of the Milky Way at a much higher speed than would be expected based on the mass of visible stars. What do ast ...
... What do astronomers mean when they say that the Sun is a fairly typical star? Some stars are many times more massive and some many times less massive than the Sun. The Sun orbits the center of the Milky Way at a much higher speed than would be expected based on the mass of visible stars. What do ast ...
DO NOT WRITE ON THIS PAPER Standard 1 Objective 1 Study
... 15.The time it takes for half of a sample of a radioactive isotope to decay is called a Halflife. 16.Radioactive dating is used to determine the absolute age of rocks because radioactive decay happens at a relatively constant rate. 17.Radiometric dating is determining the age of a substance by compa ...
... 15.The time it takes for half of a sample of a radioactive isotope to decay is called a Halflife. 16.Radioactive dating is used to determine the absolute age of rocks because radioactive decay happens at a relatively constant rate. 17.Radiometric dating is determining the age of a substance by compa ...
Microsoft Word Document
... Video – How the Universe Works: Supernovas (Discovery Channel 2010) 1. If a supernova occurred within a few dozen lightyears of earth, how would it affect life on our ...
... Video – How the Universe Works: Supernovas (Discovery Channel 2010) 1. If a supernova occurred within a few dozen lightyears of earth, how would it affect life on our ...
Worldly Wise 3000
... About four hundred years ago, when the telescope was invented, people were able to take a dose look at the planets for the first time. The early astronomers were surprised at what they saw. Saturn's rings were beautiful. Mars had huge craters. Jupiter had several moons. One of them was even bigger t ...
... About four hundred years ago, when the telescope was invented, people were able to take a dose look at the planets for the first time. The early astronomers were surprised at what they saw. Saturn's rings were beautiful. Mars had huge craters. Jupiter had several moons. One of them was even bigger t ...
Lecture 1: Nucleosynthesis, solar composition, chondrites, volatility
... 2) Nucleosynthesis – how did the elements form? 3) What is the bulk composition of the solar system and how did it form? 4) How did bulk solar system stuff condense into solids and eventually planets? 5) What evidence is available from meteorites? ...
... 2) Nucleosynthesis – how did the elements form? 3) What is the bulk composition of the solar system and how did it form? 4) How did bulk solar system stuff condense into solids and eventually planets? 5) What evidence is available from meteorites? ...
The Nine Planets
... and has a magnetic field like Earth • Named for the king of Roman gods - due to its brightness in the sky ...
... and has a magnetic field like Earth • Named for the king of Roman gods - due to its brightness in the sky ...
Observing the Planets
... • The sky seems to revolve around us because of Earth’s rotation • Additionally, planets move with respect to the fixed stars, that’s why they are called planets (greek: wanderers) • Due to the planet’s movement in their orbit, and Earth’s orbital motion, this additional motion – the apparent motion ...
... • The sky seems to revolve around us because of Earth’s rotation • Additionally, planets move with respect to the fixed stars, that’s why they are called planets (greek: wanderers) • Due to the planet’s movement in their orbit, and Earth’s orbital motion, this additional motion – the apparent motion ...
The Solar Nebula Theory
... – Comets have different origins but many, like ISON, are as old as the Solar System. ...
... – Comets have different origins but many, like ISON, are as old as the Solar System. ...
supplemental educational materials PDF
... Saturn, Neptune and Pluto. These planets would be expected to show seasonal changes. However, a planet without an atmosphere, like Pluto, would not show seasons. Uranus is tilted so that it almost lies on its side, but it will still show seasons as it travels around the Sun. First, one pole points t ...
... Saturn, Neptune and Pluto. These planets would be expected to show seasonal changes. However, a planet without an atmosphere, like Pluto, would not show seasons. Uranus is tilted so that it almost lies on its side, but it will still show seasons as it travels around the Sun. First, one pole points t ...
SOL Study Book
... 2. The moon is about one-quarter the diameter of the Earth and one-eightieth of its mass. 3. The moon has extreme temperatures, virtually no atmosphere, no water, and no life. 4. When the moon’s face appears to increase in size, it is waxing. 5. When the moon’s face appears to decrease in size, it i ...
... 2. The moon is about one-quarter the diameter of the Earth and one-eightieth of its mass. 3. The moon has extreme temperatures, virtually no atmosphere, no water, and no life. 4. When the moon’s face appears to increase in size, it is waxing. 5. When the moon’s face appears to decrease in size, it i ...
Exam 1 Review
... Be sure to learn important aspects such as composition, air pressure, temperature, weather/storms. ...
... Be sure to learn important aspects such as composition, air pressure, temperature, weather/storms. ...
Quiz 1 Review
... 5) The Sun is thought to be 4.6 billion years old, all rocks that have been dated are roughly the same age o Oldest rocks ever dated (in Canada) are about 4.1 billion years old 6) Meteors that have crashed into Earth have similar chemical compositions as rocks on Earth 7) In stars the densest materi ...
... 5) The Sun is thought to be 4.6 billion years old, all rocks that have been dated are roughly the same age o Oldest rocks ever dated (in Canada) are about 4.1 billion years old 6) Meteors that have crashed into Earth have similar chemical compositions as rocks on Earth 7) In stars the densest materi ...
Objects In Space -- research questions
... You’ll work closely with “Outer Planets” and the “Sun” to create a close to scale version of our solar system. Pay close attention to the sizes of your planets compared to each other, the outer planets and the sun. Answer the following questions: 1. What are the names of the 4 inner planets, in orde ...
... You’ll work closely with “Outer Planets” and the “Sun” to create a close to scale version of our solar system. Pay close attention to the sizes of your planets compared to each other, the outer planets and the sun. Answer the following questions: 1. What are the names of the 4 inner planets, in orde ...
Study Guide: Chapters 32-‐34 FROSH CHAPTER 32 1. What is
... 37. Given an H-‐R diagram, choose which star(s) is/are turning hydrogen into helium. ...
... 37. Given an H-‐R diagram, choose which star(s) is/are turning hydrogen into helium. ...
ppt - Astronomy & Physics
... Once the greenhouse effect is established it will reach an equilibrium where the net radiation outward equals that coming in If you work out the amount of energy arriving from the Earth it is about 340 W m-2 Albedo serves to reduce the net radiation through the atmosphere to about 235 W m-2 Yet the ...
... Once the greenhouse effect is established it will reach an equilibrium where the net radiation outward equals that coming in If you work out the amount of energy arriving from the Earth it is about 340 W m-2 Albedo serves to reduce the net radiation through the atmosphere to about 235 W m-2 Yet the ...
report
... and how to work with proportions and cross multiply. 11. The next day in class, have a group discussion of what they discovered. Review the homework and have one cutout of the sun ( which would be 76.7 inches in diameter relative to the cutouts that they used in their activity). 12. Wrap up the assi ...
... and how to work with proportions and cross multiply. 11. The next day in class, have a group discussion of what they discovered. Review the homework and have one cutout of the sun ( which would be 76.7 inches in diameter relative to the cutouts that they used in their activity). 12. Wrap up the assi ...
Yukon Grade One Earth and Space Science: Daily And Seasonal
... and solar system. Identify and describe a range of instruments that are used in astronomy (e.g., telescopes, spectroscopes, satellites, probes, robotic devices) Give examples of how astronomers use astronomical and space exploration technologies to advance understanding of the universe and solar sys ...
... and solar system. Identify and describe a range of instruments that are used in astronomy (e.g., telescopes, spectroscopes, satellites, probes, robotic devices) Give examples of how astronomers use astronomical and space exploration technologies to advance understanding of the universe and solar sys ...
Key 2 - UNLV Physics
... 36. Potassium-40 has a half-life of 1.3 billion years, if we start with 100 atoms, how much is left after 2.6 billion years? (a) 100 atoms (b) 50 atoms (c) 25 atoms (d) 1/16 of 100 atoms (e) none. 37. Erosion is more effective on Earth then Mars or Venus because of (a) Earth is bigger. (b) Earth is ...
... 36. Potassium-40 has a half-life of 1.3 billion years, if we start with 100 atoms, how much is left after 2.6 billion years? (a) 100 atoms (b) 50 atoms (c) 25 atoms (d) 1/16 of 100 atoms (e) none. 37. Erosion is more effective on Earth then Mars or Venus because of (a) Earth is bigger. (b) Earth is ...
Contents Mercury, page 2 Venus, page 3 Earth
... 224.7 Earth days. The planet is named after the Roman goddess of love and beauty. After the Moon, it is the brightest natural object in the night sky, reaching an apparent magnitude of −4.6, bright enough to cast shadows. Because Venus is an inferior planet from Earth, it never appears to venture fa ...
... 224.7 Earth days. The planet is named after the Roman goddess of love and beauty. After the Moon, it is the brightest natural object in the night sky, reaching an apparent magnitude of −4.6, bright enough to cast shadows. Because Venus is an inferior planet from Earth, it never appears to venture fa ...
Saraswati River - Ancient Greece
... 1. sun, moon, Mercury, Mars, Venus, Jupiter and Saturn 2. 1000s of stars – of which only about 1000 were identifiable in groups – namely the 48 ancient constellations which were formalised by Ptolemy (c.AD100 – 178) 3. Occasional phenomena – e.g. eclipses, comets and shooting stars. All ancients (th ...
... 1. sun, moon, Mercury, Mars, Venus, Jupiter and Saturn 2. 1000s of stars – of which only about 1000 were identifiable in groups – namely the 48 ancient constellations which were formalised by Ptolemy (c.AD100 – 178) 3. Occasional phenomena – e.g. eclipses, comets and shooting stars. All ancients (th ...
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.