OCR Physics A Refer to the Physics A datasheet for data, formulae
... The red shift of a galaxy’s spectrum can be used to determine the velocity of the galaxy relative to Earth. a ...
... The red shift of a galaxy’s spectrum can be used to determine the velocity of the galaxy relative to Earth. a ...
Uranus - Rackspace
... feature is the tilt of its rotational axis, which is almost perpendicular to the plane of the eclipitc, which means that it alternately has its north pole and its south pole turned towards the sun. ...
... feature is the tilt of its rotational axis, which is almost perpendicular to the plane of the eclipitc, which means that it alternately has its north pole and its south pole turned towards the sun. ...
Section 2 Movements of the Earth
... • Since the early 1960s, spacecraft have been sent out of Earth’s orbit to study other planets. • The Voyager 1 and Voyager 2 spacecraft investigated Jupiter, Saturn, Uranus, and Neptune, and collected images of these planets and their moons. • The Galileo spacecraft orbited Jupiter and its moons fr ...
... • Since the early 1960s, spacecraft have been sent out of Earth’s orbit to study other planets. • The Voyager 1 and Voyager 2 spacecraft investigated Jupiter, Saturn, Uranus, and Neptune, and collected images of these planets and their moons. • The Galileo spacecraft orbited Jupiter and its moons fr ...
Mercury`s MESSENGER mission comes to a crashing climax
... system planets and the one nearest to our star. (Pluto was relegated to being a mere dwarf planet in 2006.) Unlike the other well studied and photographed planets, Mercury has until recent times remained mostly unexplored. ...
... system planets and the one nearest to our star. (Pluto was relegated to being a mere dwarf planet in 2006.) Unlike the other well studied and photographed planets, Mercury has until recent times remained mostly unexplored. ...
Homework #2, AST 203, Spring 2012
... c. Take the ratio of the two orbital periods you calculated in parts (a) and (b). You’ll see that it is very close to the ratio of two small integers; which integers are these? Thus the two planets regularly come close to one another, in the same part of their orbits, which allows them to have a max ...
... c. Take the ratio of the two orbital periods you calculated in parts (a) and (b). You’ll see that it is very close to the ratio of two small integers; which integers are these? Thus the two planets regularly come close to one another, in the same part of their orbits, which allows them to have a max ...
What is a star?
... size of the sun to 1,000 times the size of the sun. • Two or more stars may be bound together by gravity, which causes them to orbit each other. • Three or more stars that are bound by gravity are called multiple stars or multiple star systems. The largest object in our solar system is the sun, whi ...
... size of the sun to 1,000 times the size of the sun. • Two or more stars may be bound together by gravity, which causes them to orbit each other. • Three or more stars that are bound by gravity are called multiple stars or multiple star systems. The largest object in our solar system is the sun, whi ...
Stars and the Milky Way
... • the Milky Way is one of billions of galaxies in the universe • the Milky Way is made up of over 200 billion stars Other facts about the Milky Way • The Sun is just one of the stars in the Milky Way. • It is called the Milky Way because when astronomers looked up at the sky, they saw a line of ligh ...
... • the Milky Way is one of billions of galaxies in the universe • the Milky Way is made up of over 200 billion stars Other facts about the Milky Way • The Sun is just one of the stars in the Milky Way. • It is called the Milky Way because when astronomers looked up at the sky, they saw a line of ligh ...
The Detection and Characterization of Extrasolar Planets
... we might have expected based on our own solar system. Our Solar System has eight planets—four inner rocky/terrestrial planets and four outer gas/ice giants—in orbits that lie in approximately the same plane and that are close to being circular. As already mentioned, the first exoplanet discovered ar ...
... we might have expected based on our own solar system. Our Solar System has eight planets—four inner rocky/terrestrial planets and four outer gas/ice giants—in orbits that lie in approximately the same plane and that are close to being circular. As already mentioned, the first exoplanet discovered ar ...
Right Ascension
... Limits to observations In practice, the Hubble Space Telescope can achieve its diffractionlimited resolution, but the Keck could not, originally. This is because the Keck is on the surface of the Earth, underneath the atmosphere. The atmosphere is in constant motion, and this 'smears' images out a ...
... Limits to observations In practice, the Hubble Space Telescope can achieve its diffractionlimited resolution, but the Keck could not, originally. This is because the Keck is on the surface of the Earth, underneath the atmosphere. The atmosphere is in constant motion, and this 'smears' images out a ...
Chapter 10
... 3. Fred Whipple proposed in 1950 what is still the basic model of a comet: the nucleus is essentially a dirty snowball made up of water ice, frozen carbon dioxide, and small solid grains. We now include in the model a crusty layer on the surface of the nucleus. 4. The coma is made up of diffuse gas ...
... 3. Fred Whipple proposed in 1950 what is still the basic model of a comet: the nucleus is essentially a dirty snowball made up of water ice, frozen carbon dioxide, and small solid grains. We now include in the model a crusty layer on the surface of the nucleus. 4. The coma is made up of diffuse gas ...
MSWord version
... This is what we mean by a lunar standstill: The Moon appears to change directions. Night after night it rises more and more southerly. Then it reaches its standstill. It will thereafter rise more and more northerly. It will do this until it reaches a second standstill, at which time it will begin to ...
... This is what we mean by a lunar standstill: The Moon appears to change directions. Night after night it rises more and more southerly. Then it reaches its standstill. It will thereafter rise more and more northerly. It will do this until it reaches a second standstill, at which time it will begin to ...
1 Lunar Standstills and Chimney Rock Thomas Hockey To
... This is what we mean by a lunar standstill: The Moon appears to change directions. Night after night it rises more and more southerly. Then it reaches its standstill. It will thereafter rise more and more northerly. It will do this until it reaches a second standstill, at which time it will begin to ...
... This is what we mean by a lunar standstill: The Moon appears to change directions. Night after night it rises more and more southerly. Then it reaches its standstill. It will thereafter rise more and more northerly. It will do this until it reaches a second standstill, at which time it will begin to ...
Pluto evidence
... smaller objects that move around in the same area as Pluto. But there are at least three other planets that have not cleared their neighborhoods of smaller objects. Saturn has rings made of many, many small objects. Saturn has not cleared these out of its orbit yet. Jupiter also has rings. Jupiter h ...
... smaller objects that move around in the same area as Pluto. But there are at least three other planets that have not cleared their neighborhoods of smaller objects. Saturn has rings made of many, many small objects. Saturn has not cleared these out of its orbit yet. Jupiter also has rings. Jupiter h ...
Notes (PowerPoint)
... • Normally counter-clockwise from above north pole • All planets exhibited this sometimes • Plato’s theory had extra spheres and features to handle retrograde motion ...
... • Normally counter-clockwise from above north pole • All planets exhibited this sometimes • Plato’s theory had extra spheres and features to handle retrograde motion ...
Beyond the Solar System Homework for Geology 8
... 40. Our galaxy belongs to a group of galaxies known as the Local Group. 41. Using stellar parallax, astronomers can determine the distance to nearby planets. 42. Small stars evolve much more slowly than do large stars. 43. Most galaxies in the universe are moving away from the “center” of the Unive ...
... 40. Our galaxy belongs to a group of galaxies known as the Local Group. 41. Using stellar parallax, astronomers can determine the distance to nearby planets. 42. Small stars evolve much more slowly than do large stars. 43. Most galaxies in the universe are moving away from the “center” of the Unive ...
Chapter 3
... earth's polar axis. Precession is a slow, circular movement of the polar axis along the surface of an imaginary double cone. One revolution takes about 26000 years (Platonic year). Thus, the vernal point moves along the equator at a rate of approx. 50'' per year. In addition, the polar axis makes a ...
... earth's polar axis. Precession is a slow, circular movement of the polar axis along the surface of an imaginary double cone. One revolution takes about 26000 years (Platonic year). Thus, the vernal point moves along the equator at a rate of approx. 50'' per year. In addition, the polar axis makes a ...
Stars
... • Most average stars will blow away their outer atmospheres to form a planetary nebula (ionized gas emission) • Cores will remain behind and burn as a white dwarf until they cool down • What will be left is a dark ball of matter known as a black dwarf ...
... • Most average stars will blow away their outer atmospheres to form a planetary nebula (ionized gas emission) • Cores will remain behind and burn as a white dwarf until they cool down • What will be left is a dark ball of matter known as a black dwarf ...
IDENTIFYING THE ROTATION RATE AND THE PRESENCE OF
... (e.g., the blue curve for the cloudy Earth has no significant amplitude at 12 hr) but rather is due to the distribution of continents and oceans on the Earth. For this data set, the difference in the amplitude between the local maxima at 12 hr and 24 hr would indicate that the peak at 24 hr correspo ...
... (e.g., the blue curve for the cloudy Earth has no significant amplitude at 12 hr) but rather is due to the distribution of continents and oceans on the Earth. For this data set, the difference in the amplitude between the local maxima at 12 hr and 24 hr would indicate that the peak at 24 hr correspo ...
IB_Op_F_04 - Effectsmeister
... In general, what is the relationship between the temperature of a star and its brightness? Most of the stars seem to be along a line from the upper left corner to the lower right corner of the HR Diagram. Stars which fall into this category of stars are called main sequence stars . Does our Sun fit ...
... In general, what is the relationship between the temperature of a star and its brightness? Most of the stars seem to be along a line from the upper left corner to the lower right corner of the HR Diagram. Stars which fall into this category of stars are called main sequence stars . Does our Sun fit ...
The Anglo-Australian Planet Search – XXI. A Gas-Giant
... planets with periods of near one year are themselves of great intrinsic interest, because (as was realised by most researchers soon after the first gas-giant planets were discovered within 1 AU – see e.g. Williams et al. 1997) they are likely to host their own satellite systems, which could well be ...
... planets with periods of near one year are themselves of great intrinsic interest, because (as was realised by most researchers soon after the first gas-giant planets were discovered within 1 AU – see e.g. Williams et al. 1997) they are likely to host their own satellite systems, which could well be ...
Survey of the Solar System
... atmospheres from the solar nebula Inner planets created their atmospheres by volcanic activity and perhaps from comets and asteroids that vaporized on impact Objects like Mercury and the Moon are too small – not enough gravity – to retain any gases on their surfaces ...
... atmospheres from the solar nebula Inner planets created their atmospheres by volcanic activity and perhaps from comets and asteroids that vaporized on impact Objects like Mercury and the Moon are too small – not enough gravity – to retain any gases on their surfaces ...
Rare Earth hypothesis
In planetary astronomy and astrobiology, the Rare Earth Hypothesis argues that the origin of life and the evolution of biological complexity such as sexually reproducing, multicellular organisms on Earth (and, subsequently, human intelligence) required an improbable combination of astrophysical and geological events and circumstances. The hypothesis argues that complex extraterrestrial life is a very improbable phenomenon and likely to be extremely rare. The term ""Rare Earth"" originates from Rare Earth: Why Complex Life Is Uncommon in the Universe (2000), a book by Peter Ward, a geologist and paleontologist, and Donald E. Brownlee, an astronomer and astrobiologist, both faculty members at the University of Washington.An alternative view point was argued by Carl Sagan and Frank Drake, among others. It holds that Earth is a typical rocky planet in a typical planetary system, located in a non-exceptional region of a common barred-spiral galaxy. Given the principle of mediocrity (also called the Copernican principle), it is probable that the universe teems with complex life. Ward and Brownlee argue to the contrary: that planets, planetary systems, and galactic regions that are as friendly to complex life as are the Earth, the Solar System, and our region of the Milky Way are very rare.