A rocky planet transiting a nearby low-mass star
... Venus-like Bond albedo of 0.75), GJ"1132b may have retained a substantial atmosphere. At these temperatures, the average thermal speeds of atoms or molecules heavier than helium are less than one-eighth of the escape velocity, suggesting an atmosphere potentially stable against thermal escape. This ...
... Venus-like Bond albedo of 0.75), GJ"1132b may have retained a substantial atmosphere. At these temperatures, the average thermal speeds of atoms or molecules heavier than helium are less than one-eighth of the escape velocity, suggesting an atmosphere potentially stable against thermal escape. This ...
Making More Terrestrial Planets
... density profile in the hope that it would help remedy the problem found in Paper I that Mars analogues were too massive. In the inner part of the disk, the initial surface density varies linearly from a maximum at 0.7 AU, to zero at 0.3 AU. This is designed to mimic the effects of mass loss resultin ...
... density profile in the hope that it would help remedy the problem found in Paper I that Mars analogues were too massive. In the inner part of the disk, the initial surface density varies linearly from a maximum at 0.7 AU, to zero at 0.3 AU. This is designed to mimic the effects of mass loss resultin ...
Basics – II. Time, Magnitudes and Spectral types
... or month, nor months in a year. This means that they all tend to either slowly get out of phase with the year or need some jiggling to stay in phase. ...
... or month, nor months in a year. This means that they all tend to either slowly get out of phase with the year or need some jiggling to stay in phase. ...
Total Solar Eclipse
... • But, it must be a Full or New Moon when the nodes line up to have an eclipse. • This happens only very rarely. • Check out Fred Espenak’s Eclipse page • http://sunearth.gsfc.nasa.gov/eclipse/eclipse.html ...
... • But, it must be a Full or New Moon when the nodes line up to have an eclipse. • This happens only very rarely. • Check out Fred Espenak’s Eclipse page • http://sunearth.gsfc.nasa.gov/eclipse/eclipse.html ...
4P38.pdf
... inputs, thermal (Jeans) escape of the atmospheric constituents (most notably H, which drags away also heavier atoms), although usually neglected in the Solar System, becomes important. Stars around solar-type stars (e.g., “Hot Jupiters”) may lose significant fractions of their hydrogen envelopes und ...
... inputs, thermal (Jeans) escape of the atmospheric constituents (most notably H, which drags away also heavier atoms), although usually neglected in the Solar System, becomes important. Stars around solar-type stars (e.g., “Hot Jupiters”) may lose significant fractions of their hydrogen envelopes und ...
Space - WonderWorks
... SC.6.P.13.2-- Explore the Law of Gravity by recognizing that every object exerts gravitational force on every other object and that the force depends on how much mass the objects have and how far apart they are. SC.8.E.5.1-- Recognize that there are enormous distances between objects in space and ap ...
... SC.6.P.13.2-- Explore the Law of Gravity by recognizing that every object exerts gravitational force on every other object and that the force depends on how much mass the objects have and how far apart they are. SC.8.E.5.1-- Recognize that there are enormous distances between objects in space and ap ...
COMETS - Mount Holyoke College
... Danish astronomer Tycho Brahe reasoned that, if comets were indeed in the Earth's atmosphere, then observers at different sites should see a shift in the comets's position projected against the background stars (parallax). Tycho made careful observations of the comet's position relative to nearby st ...
... Danish astronomer Tycho Brahe reasoned that, if comets were indeed in the Earth's atmosphere, then observers at different sites should see a shift in the comets's position projected against the background stars (parallax). Tycho made careful observations of the comet's position relative to nearby st ...
Powerpoint slides - Earth & Planetary Sciences
... • Pluto has two extra satellites (Weaver et al., Nature 2006) • How did these binaries form? • Collisions not a good explanation – low probability, and orbits end up tightly bound (e.g. Earth/Moon) • A more likely explanation is close passage (<~1 Hill sphere), with orbital energy subsequently reduc ...
... • Pluto has two extra satellites (Weaver et al., Nature 2006) • How did these binaries form? • Collisions not a good explanation – low probability, and orbits end up tightly bound (e.g. Earth/Moon) • A more likely explanation is close passage (<~1 Hill sphere), with orbital energy subsequently reduc ...
Jupiter Jupiter is the largest planet in the solar system. Its diameter is
... orbited the sun independently, but had been pulled by Jupiter's gravity into an orbit around the planet. When the comet was discovered, it had broken into 21 pieces. The comet probably had broken apart when it passed close to Jupiter. Calculations based on the comet's location and velocity showed th ...
... orbited the sun independently, but had been pulled by Jupiter's gravity into an orbit around the planet. When the comet was discovered, it had broken into 21 pieces. The comet probably had broken apart when it passed close to Jupiter. Calculations based on the comet's location and velocity showed th ...
Comets, Asteroids, and Meteors
... • Their motion is also influenced to some degree by gases jetting out of them, so their orbits are not completely determined by gravity. • Most comets’ orbits appear to be elliptical, or in some cases parabolic. • The most common comets are called short-period comets that have only mildly elliptical ...
... • Their motion is also influenced to some degree by gases jetting out of them, so their orbits are not completely determined by gravity. • Most comets’ orbits appear to be elliptical, or in some cases parabolic. • The most common comets are called short-period comets that have only mildly elliptical ...
Summer 2004 ISP 205: Visions of the Universe Professor: ER Capriotti Sample Questions
... A. believed Mars would look faintest when at opposition. B. used uniform circular motion to explain planetary motion. C. believed the Earth went around the Sun. D. made very accurate predictions of planetary motion. E. believed the Sun went around the Earth. 22. The Copernican universe has in order ...
... A. believed Mars would look faintest when at opposition. B. used uniform circular motion to explain planetary motion. C. believed the Earth went around the Sun. D. made very accurate predictions of planetary motion. E. believed the Sun went around the Earth. 22. The Copernican universe has in order ...
Moon
... New moon means that the moon is almost directly between the sun and the earth, so that we are looking at the unlit side of the moon. And full moon means that the earth is almost directly between the moon and the sun, so that we are looking at the lit side of the moon. According to the picture, it se ...
... New moon means that the moon is almost directly between the sun and the earth, so that we are looking at the unlit side of the moon. And full moon means that the earth is almost directly between the moon and the sun, so that we are looking at the lit side of the moon. According to the picture, it se ...
Chapter-by-Chapter Guide
... where Earth is the size of a basketball, we could not fit the rest of the solar system in a local park. (A basketball is roughly 200 times the diameter of Earth in the Voyage model described in the book. Since the Earth-Sun distance is 15 meters in the Voyage model, a basketball-size Earth would req ...
... where Earth is the size of a basketball, we could not fit the rest of the solar system in a local park. (A basketball is roughly 200 times the diameter of Earth in the Voyage model described in the book. Since the Earth-Sun distance is 15 meters in the Voyage model, a basketball-size Earth would req ...
unit2oursoloarsystem part2
... The international Cassini spacecraft detected what appeared to be a large debris disk around the 950-mile-wide moon Rhea during a flyby in 2005. Scientists proposed that the halo likely contained particles ranging from the size of grains to boulders. ...
... The international Cassini spacecraft detected what appeared to be a large debris disk around the 950-mile-wide moon Rhea during a flyby in 2005. Scientists proposed that the halo likely contained particles ranging from the size of grains to boulders. ...
Nuclear Powerhouse
... …but there are rules We can’t simply convert atoms into energy We rearrange the protons and neutrons in nuclei to get a lower-mass configuration The difference between initial mass and final mass is converted to energy Chemical energy comes from rearranging atoms to configurations of lower energy ( ...
... …but there are rules We can’t simply convert atoms into energy We rearrange the protons and neutrons in nuclei to get a lower-mass configuration The difference between initial mass and final mass is converted to energy Chemical energy comes from rearranging atoms to configurations of lower energy ( ...
OSETI with MAGIC Alexandre Armada Tella
... Philosophically: since the time of ancient Greek civilization, some people think that Earth is not a special place: “Principle of Mediocrity”. Scientifically: ...
... Philosophically: since the time of ancient Greek civilization, some people think that Earth is not a special place: “Principle of Mediocrity”. Scientifically: ...
The formation of the solar system
... or 41 Ca (T 1/2 = 0.1 Myr) could also have been produced by irradiation according to some models (Gounelle et al., 2001; Duprat & Tatischeff, 2007; Leya et al., 2003). We note that the situation for these SLRs is complicated by the fact that their initial abundance in the solar system is not well co ...
... or 41 Ca (T 1/2 = 0.1 Myr) could also have been produced by irradiation according to some models (Gounelle et al., 2001; Duprat & Tatischeff, 2007; Leya et al., 2003). We note that the situation for these SLRs is complicated by the fact that their initial abundance in the solar system is not well co ...
The Moons of Jupiter
... Io, Europa, Ganymede, and Callisto Discovered by Galileo in 1610 All of these moons are in Synchronous Rotation about Jupiter The rotation period about each moon's axis is the same as that moon's orbital period about Jupiter Each moon always presents the same side towards Jupiter Astronomy 1-1 ...
... Io, Europa, Ganymede, and Callisto Discovered by Galileo in 1610 All of these moons are in Synchronous Rotation about Jupiter The rotation period about each moon's axis is the same as that moon's orbital period about Jupiter Each moon always presents the same side towards Jupiter Astronomy 1-1 ...
Reference PDF document
... From a visual point of view, the phenomenon of the transit of Venus is similar to Mercury’s: Venus is visible as a black circle moving slowly over the brilliant solar disk. The transit of Venus lasts a maximum of 8 hours. During the transit, Venus has a very small apparent diameter. However, it is c ...
... From a visual point of view, the phenomenon of the transit of Venus is similar to Mercury’s: Venus is visible as a black circle moving slowly over the brilliant solar disk. The transit of Venus lasts a maximum of 8 hours. During the transit, Venus has a very small apparent diameter. However, it is c ...
Pathways to Astronomy/Space
... types of students that are in your class, and plan with their abilities in mind. It may be more appropriate for you to select the lens we have designated as applied for your class, or it may be more appropriate for you to select the lens that can be modified to suit both needs. Or you may wish to ch ...
... types of students that are in your class, and plan with their abilities in mind. It may be more appropriate for you to select the lens we have designated as applied for your class, or it may be more appropriate for you to select the lens that can be modified to suit both needs. Or you may wish to ch ...
Eratosthenes - robertnowlan.com - A Chronicle of Mathematical
... attempted to construct an accurate chronology of the world by giving dates of literary and political events from the time of the siege of Troy. Eratosthenes determined the obliquity of the ecliptic, measuring the tilt of the earth with great accuracy to obtain the value 23º 51΄ 20΄΄. He prepared a s ...
... attempted to construct an accurate chronology of the world by giving dates of literary and political events from the time of the siege of Troy. Eratosthenes determined the obliquity of the ecliptic, measuring the tilt of the earth with great accuracy to obtain the value 23º 51΄ 20΄΄. He prepared a s ...
Key Stage 3 Science - Priestley Smith School
... On entry into year 7, pupils will be assessed on their scientific knowledge and understanding to ensure that the statutory requirements from key stage2 have been met. This will take place during the first science lessons and will help to focus the curriculum to their needs. VI students must be taugh ...
... On entry into year 7, pupils will be assessed on their scientific knowledge and understanding to ensure that the statutory requirements from key stage2 have been met. This will take place during the first science lessons and will help to focus the curriculum to their needs. VI students must be taugh ...
C - ScienceWilmeth5
... The sun releases less energy in winter. The Eastern Hemisphere faces the sun during the winter. The moon is between the sun and the Earth during winter. The Northern Hemisphere is pointed away from the sun in the winter. ...
... The sun releases less energy in winter. The Eastern Hemisphere faces the sun during the winter. The moon is between the sun and the Earth during winter. The Northern Hemisphere is pointed away from the sun in the winter. ...
Orrery
An orrery is a mechanical model of the solar system that illustrates or predicts the relative positions and motions of the planets and moons, usually according to the heliocentric model. It may also represent the relative sizes of these bodies; but since accurate scaling is often not practical due to the actual large ratio differences, a subdued approximation may be used instead. Though the Greeks had working planetaria, the first orrery that was a planetarium of the modern era was produced in 1704, and one was presented to Charles Boyle, 4th Earl of Orrery — whence came the name. They are typically driven by a clockwork mechanism with a globe representing the Sun at the centre, and with a planet at the end of each of the arms.