NASA - Go to the Head of the Solar System
... Four planets have rings. Saturn's rings are the brightest. This could mean that they are the newest. 10. I am a hot planet, but my temperature can drop 600 Celsius at night. That's because I don't have an atmosphere to trap the heat. (b.) Mercury Mercury is the closest planet to the sun, so it is ve ...
... Four planets have rings. Saturn's rings are the brightest. This could mean that they are the newest. 10. I am a hot planet, but my temperature can drop 600 Celsius at night. That's because I don't have an atmosphere to trap the heat. (b.) Mercury Mercury is the closest planet to the sun, so it is ve ...
Study Guide for the Final Astronomy Exam
... C) Understand the Doppler Wobble Technique (a.k.a. radial velocity method) for finding extra-solar planets enough to interpret a radial velocity curve. D) Contrast a given extra-solar planetary system with ours. E) Describe two proposed methods of giant planet migration. State why there needs to be ...
... C) Understand the Doppler Wobble Technique (a.k.a. radial velocity method) for finding extra-solar planets enough to interpret a radial velocity curve. D) Contrast a given extra-solar planetary system with ours. E) Describe two proposed methods of giant planet migration. State why there needs to be ...
Space studies
... being seen from space in visible light. Venus may have possessed oceans in the past,[13][14] but these would have vaporized as the temperature rose due to a runaway greenhouse effect.[15] The water has most probably photodissociated, and, because of the lack of a planetary magnetic field, the free h ...
... being seen from space in visible light. Venus may have possessed oceans in the past,[13][14] but these would have vaporized as the temperature rose due to a runaway greenhouse effect.[15] The water has most probably photodissociated, and, because of the lack of a planetary magnetic field, the free h ...
Ancient Astronomy
... Can’t be a star – heavens unalterable – must be near Earth In 1577 observed a comet – no parallax found Observed other stars – no parallax found Concluded Copernicus was wrong - Earth did not move Danish King built him the “Sky Castle” Showed that comets were outside the atmosphere Proved that the h ...
... Can’t be a star – heavens unalterable – must be near Earth In 1577 observed a comet – no parallax found Observed other stars – no parallax found Concluded Copernicus was wrong - Earth did not move Danish King built him the “Sky Castle” Showed that comets were outside the atmosphere Proved that the h ...
Astronomy
... Polaris: the North Star, which is located almost directly above Earth’s geographic North Pole. Red shift: as a source of visible light moves away from the observer, the wavelengths increase, creating a shift toward the red end of the visible spectrum. Star: a fixed luminous point in the night sky th ...
... Polaris: the North Star, which is located almost directly above Earth’s geographic North Pole. Red shift: as a source of visible light moves away from the observer, the wavelengths increase, creating a shift toward the red end of the visible spectrum. Star: a fixed luminous point in the night sky th ...
Chapter 2: Emergence of Modern Astronomy
... Measure synodic period (position relative to Sun) then calculate sidereal period (change sign for superior planets) ...
... Measure synodic period (position relative to Sun) then calculate sidereal period (change sign for superior planets) ...
Completing the Census of Exoplanetary Systems with
... • A complete census is likely needed to understand planet formation and evolution. – Most giant planets likely formed beyond the snow line. – Place our solar system in context. – Water for habitable planets likely delivered from beyond the snow line. – Understand the frequency of planet formation in ...
... • A complete census is likely needed to understand planet formation and evolution. – Most giant planets likely formed beyond the snow line. – Place our solar system in context. – Water for habitable planets likely delivered from beyond the snow line. – Understand the frequency of planet formation in ...
1. How old is our sun now? How does its present luminosity
... 1. How old is our sun now? How does its present luminosity compare to the luminosity it had when the Solar System first formed? How much longer will it remain on the main sequence? What will happen to the sun after it leaves the main sequence? (a) Our sun is now 4.6 Byrs old. (b) When it first forme ...
... 1. How old is our sun now? How does its present luminosity compare to the luminosity it had when the Solar System first formed? How much longer will it remain on the main sequence? What will happen to the sun after it leaves the main sequence? (a) Our sun is now 4.6 Byrs old. (b) When it first forme ...
The Sun and the Solar System
... The circularity of Neptune’s orbit, the outermost and thus least strongly bound of all the major planets (Pluto, Eris, and other “dwarf planets” excepted from this category), is especially compelling. • Th ...
... The circularity of Neptune’s orbit, the outermost and thus least strongly bound of all the major planets (Pluto, Eris, and other “dwarf planets” excepted from this category), is especially compelling. • Th ...
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... 2a. Mark and label the Sun (spectral type=G2V, MV = 4.83, B-‐V=+0.66) and the star Vega (spectral type: A0V, MV = 0.5, B-‐V=0.0) in the HR diagram. [Assume the tick marks on the lower horizontal ...
... 2a. Mark and label the Sun (spectral type=G2V, MV = 4.83, B-‐V=+0.66) and the star Vega (spectral type: A0V, MV = 0.5, B-‐V=0.0) in the HR diagram. [Assume the tick marks on the lower horizontal ...
–1– AST104 Sp. 2006: WELCOME TO EXAM 3 Multiple Choice
... d. if Earth passes in the orbit of a comet e. only at the north and south pole 6. When is the sun lowest in the sky at noon in the northern hemisphere ? a. winter solstice b. during a lunar eclipse c. summer solstice d. during a solar eclipse e. autumnal equinox 7. Which is true at vernal equinox? a ...
... d. if Earth passes in the orbit of a comet e. only at the north and south pole 6. When is the sun lowest in the sky at noon in the northern hemisphere ? a. winter solstice b. during a lunar eclipse c. summer solstice d. during a solar eclipse e. autumnal equinox 7. Which is true at vernal equinox? a ...
File
... poisonous gases surrounding it. The quick spinning of the planet whips up the atmosphere, creating the bands around the planet • Has many storms on the surface, most notably the big red spot which is the largest hurricane in our Solar System • Jupiter has many moons circling around it. Four of these ...
... poisonous gases surrounding it. The quick spinning of the planet whips up the atmosphere, creating the bands around the planet • Has many storms on the surface, most notably the big red spot which is the largest hurricane in our Solar System • Jupiter has many moons circling around it. Four of these ...
Ch 28 Vocab cnp
... The measure of how bright a star would be if it were located 10 parsecs from Earth A group of millions, or even billions of stars held together by gravity A unit of measurement used to describe distances between celestial objects, equal to 3.258 light-years A large cloud of gas and dust in space Ene ...
... The measure of how bright a star would be if it were located 10 parsecs from Earth A group of millions, or even billions of stars held together by gravity A unit of measurement used to describe distances between celestial objects, equal to 3.258 light-years A large cloud of gas and dust in space Ene ...
A Changing Planet
... billion years. (Estimate is based on fluctuations in cosmic background radiation.) ...
... billion years. (Estimate is based on fluctuations in cosmic background radiation.) ...
Origin of Ocean
... hot gases, stellar debris, and very young stars New stars and planetary systems form from the both primordial matter and the remnants of exploded stars within nebula Our solar system most likely formed in a nebula much like this one Condensation Theory for star and planet formation ...
... hot gases, stellar debris, and very young stars New stars and planetary systems form from the both primordial matter and the remnants of exploded stars within nebula Our solar system most likely formed in a nebula much like this one Condensation Theory for star and planet formation ...
Origins of Earth
... hot gases, stellar debris, and very young stars New stars and planetary systems form from the both primordial matter and the remnants of exploded stars within nebula Our solar system most likely formed in a nebula much like this one Condensation Theory for star and planet formation ...
... hot gases, stellar debris, and very young stars New stars and planetary systems form from the both primordial matter and the remnants of exploded stars within nebula Our solar system most likely formed in a nebula much like this one Condensation Theory for star and planet formation ...
Powerpoint - BU Imaging Science
... jovian planets? • Are there other types of planets? • Can the nebular theory explain structure of extrasolar planetary systems? • Is the structure of our solar system common or rare? ...
... jovian planets? • Are there other types of planets? • Can the nebular theory explain structure of extrasolar planetary systems? • Is the structure of our solar system common or rare? ...
Test 2 Overview
... Solar system formed out of a "whirlpool" in a "universal fluid". Planets formed out of eddies in the fluid. Sun formed at center. Planets in cooler regions. Cloud called "Solar Nebula". This is pre-Newton and modern science. But basic idea correct, and the theory evolved as science advanced, as we'l ...
... Solar system formed out of a "whirlpool" in a "universal fluid". Planets formed out of eddies in the fluid. Sun formed at center. Planets in cooler regions. Cloud called "Solar Nebula". This is pre-Newton and modern science. But basic idea correct, and the theory evolved as science advanced, as we'l ...
keplers laws and newton - Fort Thomas Independent Schools
... LAW #2: A line joining the planet and the Sun sweeps out equal areas in equal intervals of time. Planet moves slower in its orbit when farther away from the Sun. Planet moves faster in its orbit when closer to the Sun. ...
... LAW #2: A line joining the planet and the Sun sweeps out equal areas in equal intervals of time. Planet moves slower in its orbit when farther away from the Sun. Planet moves faster in its orbit when closer to the Sun. ...
Homework 2
... to the Sun would be (a) twice as strong. (b) half as strong. (c) one quarter as strong. The force of gravity can be calculated using We begin with the equation Fg = G ...
... to the Sun would be (a) twice as strong. (b) half as strong. (c) one quarter as strong. The force of gravity can be calculated using We begin with the equation Fg = G ...
key
... The main cause is a huge greenhouse effect (Heat from Sun enters, just as in a greenhouse, but cannot escape due to the thick atmosphere of carbon dioxide surrounding the planet) 68. Where does the oxygen in Earth’s atmosphere come from? Producers during photosynthesis 69. Explain why a day on V ...
... The main cause is a huge greenhouse effect (Heat from Sun enters, just as in a greenhouse, but cannot escape due to the thick atmosphere of carbon dioxide surrounding the planet) 68. Where does the oxygen in Earth’s atmosphere come from? Producers during photosynthesis 69. Explain why a day on V ...
Homework problems for Quiz 2: AY5 Spring 2013
... 2. The Sun will eventually go through which of the following phases? planetary nebula Red Giant Branch SNII White dwarf 3. In the fusion of four protons into helium, 4.7 × 10−26 grams of matter is turned into energy. How much energy does this amount of matter produce? ...
... 2. The Sun will eventually go through which of the following phases? planetary nebula Red Giant Branch SNII White dwarf 3. In the fusion of four protons into helium, 4.7 × 10−26 grams of matter is turned into energy. How much energy does this amount of matter produce? ...
Jupiter – key facts Largest and most massive planet in the Solar
... eccentric orbit. Mean density suggests it is largely made of rock. Europa – in a 2:1 orbital resonance with Io caused by Jupiter’s Fdes expanding the orbits of the galilean satellites. Mean density s ...
... eccentric orbit. Mean density suggests it is largely made of rock. Europa – in a 2:1 orbital resonance with Io caused by Jupiter’s Fdes expanding the orbits of the galilean satellites. Mean density s ...
The Milky Way
... the sun move through space and how that produces the sights you see in the sky. But how did humanity first realize that we live on a planet moving through space? That required revolutionary overthrow of an ancient and honored theory of Earth’s place. By the 16th century, many astronomers were uncomf ...
... the sun move through space and how that produces the sights you see in the sky. But how did humanity first realize that we live on a planet moving through space? That required revolutionary overthrow of an ancient and honored theory of Earth’s place. By the 16th century, many astronomers were uncomf ...
File
... stars. This takes 23 hours 56 minutes. Every sidereal day, the stars are in the same position as they were the day before. Solar Day is the time for the Sun to move from noon (highest position) to noon, an average of 24 hours. Longer than the rotational period, because the Earth moves in orbit one d ...
... stars. This takes 23 hours 56 minutes. Every sidereal day, the stars are in the same position as they were the day before. Solar Day is the time for the Sun to move from noon (highest position) to noon, an average of 24 hours. Longer than the rotational period, because the Earth moves in orbit one d ...
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.