Longevity of moons around habitable planets
... longer and longer until 1 day equals 1 Earth’s year. The system at that point is in the planet–star synchronous state. Meanwhile, the Moon starts spiralling inward. As the Moon is spiralling inward, the tidal torque due to the Moon becomes larger and larger. When the Moon is sufficiently close, the t ...
... longer and longer until 1 day equals 1 Earth’s year. The system at that point is in the planet–star synchronous state. Meanwhile, the Moon starts spiralling inward. As the Moon is spiralling inward, the tidal torque due to the Moon becomes larger and larger. When the Moon is sufficiently close, the t ...
Powerpoint slides - Earth & Planetary Sciences
... • We can use the presentday observed planetary masses and compositions to reconstruct how much mass was there initially – the minimum mass solar nebula • This gives us a constraint on the initial nebula conditions e.g. how rapidly did its density fall off with distance? • The picture gets more compl ...
... • We can use the presentday observed planetary masses and compositions to reconstruct how much mass was there initially – the minimum mass solar nebula • This gives us a constraint on the initial nebula conditions e.g. how rapidly did its density fall off with distance? • The picture gets more compl ...
Neptune, Pluto and Quaoar
... Triton's density (2.0) is slightly greater than that of Saturn's icy moons (e.g. Rhea). Triton is probably only about 25% water ice with remainder rocky material. Voyager found that Triton has an atmosphere, albeit a very tenuous one (about 0.01 millibars), composed mostly of nitrogen with a small a ...
... Triton's density (2.0) is slightly greater than that of Saturn's icy moons (e.g. Rhea). Triton is probably only about 25% water ice with remainder rocky material. Voyager found that Triton has an atmosphere, albeit a very tenuous one (about 0.01 millibars), composed mostly of nitrogen with a small a ...
Life on Other Worlds
... Persons, who imagine, that the placing Inhabitants any where, but upon Earth, will prove dangerous to Religion: I know how excessively tender some are in Religious Matters, and therefore I am very unwilling to give any offence in what I publish to People, whose opinion is contrary to what I maintain ...
... Persons, who imagine, that the placing Inhabitants any where, but upon Earth, will prove dangerous to Religion: I know how excessively tender some are in Religious Matters, and therefore I am very unwilling to give any offence in what I publish to People, whose opinion is contrary to what I maintain ...
ASTRONOMICAL EVENTS FROM 1 FEB 07 TO 24 FEB 08 Note
... The Leonids is one of the better meteor showers to observe, producing an average of 40 meteors per hour at their peak. The shower itself has a cyclic peak year every 33 years where hundreds of meteors can be seen each hour. The last of these occurred in 2001. The shower peaks this year on November 1 ...
... The Leonids is one of the better meteor showers to observe, producing an average of 40 meteors per hour at their peak. The shower itself has a cyclic peak year every 33 years where hundreds of meteors can be seen each hour. The last of these occurred in 2001. The shower peaks this year on November 1 ...
PDF format
... c) No, the celestial sphere is so far away that, even moving at close to the speed of light, it would take tens of thousands of years to reach. d) No, the celestial sphere moves away from us at the speed of light so we can never catch up with it. e) This statement doesn't make sense because the c ...
... c) No, the celestial sphere is so far away that, even moving at close to the speed of light, it would take tens of thousands of years to reach. d) No, the celestial sphere moves away from us at the speed of light so we can never catch up with it. e) This statement doesn't make sense because the c ...
Our Place in Space
... on the front and information about these objects on the reverse. The card backs include information on the location of the object, its size, and its distance from Earth. Teachers should print out the cards (preferably in color) and laminate them so that the information on each object appears on ...
... on the front and information about these objects on the reverse. The card backs include information on the location of the object, its size, and its distance from Earth. Teachers should print out the cards (preferably in color) and laminate them so that the information on each object appears on ...
ASTRO-114--Lecture 05-
... distance apart. We may know from other measurements that two stars are 30 light years apart. That’s an actual linear distance between them. But when we’re looking at the sky at night, we don’t know how far apart those stars really are in linear distance. All we know is their angular separation. So y ...
... distance apart. We may know from other measurements that two stars are 30 light years apart. That’s an actual linear distance between them. But when we’re looking at the sky at night, we don’t know how far apart those stars really are in linear distance. All we know is their angular separation. So y ...
1 We finished our last lecture by examining the “Jovian planets” of
... the outer Solar System – giant worlds of gas and ice, very different from the small and rocky “terrestrial planets”. © 2010 Pearson Education, Inc. ...
... the outer Solar System – giant worlds of gas and ice, very different from the small and rocky “terrestrial planets”. © 2010 Pearson Education, Inc. ...
The Night Sky
... 1 p.m., Saturday, April 2 - Coverage of the Docking of the ISS Progress 63 Cargo Craft to the ISS (Docking scheduled at 2 p.m. ET) (Starts at 1:15 p.m.) (all channels) 2 p.m., Monday, April 4 - NASA TV Presents “Earth Expeditions” Episode 1 - This Year NASA Takes You on a Six-Month World Tour with M ...
... 1 p.m., Saturday, April 2 - Coverage of the Docking of the ISS Progress 63 Cargo Craft to the ISS (Docking scheduled at 2 p.m. ET) (Starts at 1:15 p.m.) (all channels) 2 p.m., Monday, April 4 - NASA TV Presents “Earth Expeditions” Episode 1 - This Year NASA Takes You on a Six-Month World Tour with M ...
The motions of the Earth
... • Stars have different surface temperatures, thus different “colors”. Hence, the brightness of a star depends on the observation wavelength • Several “Photometric systems” exist, each one defining a set of wavelength bands (filters) through which observations are done. • Some standard bands: U, B, V ...
... • Stars have different surface temperatures, thus different “colors”. Hence, the brightness of a star depends on the observation wavelength • Several “Photometric systems” exist, each one defining a set of wavelength bands (filters) through which observations are done. • Some standard bands: U, B, V ...
Electronic Text Book Unit 11
... Dividing the day into equal parts The time of day A clock tells you the exact time of day and is used to mark the division of the day into equal parts. It may be hard to imagine, but there once was a time when humans did not need to keep track of the exact time of day. The rise and fall of the sun w ...
... Dividing the day into equal parts The time of day A clock tells you the exact time of day and is used to mark the division of the day into equal parts. It may be hard to imagine, but there once was a time when humans did not need to keep track of the exact time of day. The rise and fall of the sun w ...
Jupiter – Friend or Foe? IV:The influence of orbital eccentricity and
... region disrupted by that resonance is located further from the Sun when “Jupiter”’s eccentricity is increased. For clarity, we note that both the black and red curves start at 0 on the y-axis, and have simply been shifted vertically in order to allow easy comparison between the three distributions. ...
... region disrupted by that resonance is located further from the Sun when “Jupiter”’s eccentricity is increased. For clarity, we note that both the black and red curves start at 0 on the y-axis, and have simply been shifted vertically in order to allow easy comparison between the three distributions. ...
The Morning Stars
... of edges and the pitting of rock surfaces. The agents of this process are not known, but atmospheric action, perhaps in connection with volcanic episodes, may be the cause.6 Though once called earth’s twin and sister planet because they were so alike in size, Venus turns out to be every bit as inhos ...
... of edges and the pitting of rock surfaces. The agents of this process are not known, but atmospheric action, perhaps in connection with volcanic episodes, may be the cause.6 Though once called earth’s twin and sister planet because they were so alike in size, Venus turns out to be every bit as inhos ...
J Gravity and space
... Framework yearly teaching objectives – Forces • Recognise that gravity is a force of attraction between objects, that this force is greater for large objects like the Earth but gets less the further an object moves away from the Earth’s surface; use these ideas to explain: – how weight is different ...
... Framework yearly teaching objectives – Forces • Recognise that gravity is a force of attraction between objects, that this force is greater for large objects like the Earth but gets less the further an object moves away from the Earth’s surface; use these ideas to explain: – how weight is different ...
KS1 Education Guide - Immersive Theatres
... Lesson 5 Multiple Intelligence Mini-Lessons on the Solar System……………..30 Solar System Object Cards (large)…………….……………………………………………………..46 ...
... Lesson 5 Multiple Intelligence Mini-Lessons on the Solar System……………..30 Solar System Object Cards (large)…………….……………………………………………………..46 ...
(Preprint) AAS 11-665 - Long Now > Media > Uploader
... day, the mechanism will not cause the clock to pause for more than five minutes. All displays on the clock are designed to maintain accuracy to within a five-minute tick over the entire 10,000-year lifetime of the clock, as long as the clock detects solar synchronization at least once a year. It is ...
... day, the mechanism will not cause the clock to pause for more than five minutes. All displays on the clock are designed to maintain accuracy to within a five-minute tick over the entire 10,000-year lifetime of the clock, as long as the clock detects solar synchronization at least once a year. It is ...
Task - Illustrative Mathematics
... when they are placed in increasing order. On the other hand, outliers can have a dramatic impact on the mean, especially if the data set is small or if these outliers are several orders of magnitude larger than most other data points. This is made particularly clear in the case of the distance of th ...
... when they are placed in increasing order. On the other hand, outliers can have a dramatic impact on the mean, especially if the data set is small or if these outliers are several orders of magnitude larger than most other data points. This is made particularly clear in the case of the distance of th ...
Chapter-by-Chapter Guide
... Yourself Questions The Think About It and See It For Yourself questions are not numbered in the book, so we list them in the order in which they appear, keyed by section number. ...
... Yourself Questions The Think About It and See It For Yourself questions are not numbered in the book, so we list them in the order in which they appear, keyed by section number. ...
Live from McDonald Observatory: Observing Venus: explore how it
... 2012 happens to be a monumental year for observing Venus. Venus’s orbit is inclined 3.4% relative to Earth’s orbit. Therefore, when Venus passes directly in front of Earth (inferior conjunction), or, ...
... 2012 happens to be a monumental year for observing Venus. Venus’s orbit is inclined 3.4% relative to Earth’s orbit. Therefore, when Venus passes directly in front of Earth (inferior conjunction), or, ...
Asynchronous rotation of Earth-mass planets in the habitable zone
... are strong enough to drive the planet out of synchronicity and to force the slow retrograde rotation that we see today (2-6). Very simple scaling arguments predict that the amplitude of the thermal tide is proportional to the ratio of the atmospheric mean surface pressure over its scale height (1). ...
... are strong enough to drive the planet out of synchronicity and to force the slow retrograde rotation that we see today (2-6). Very simple scaling arguments predict that the amplitude of the thermal tide is proportional to the ratio of the atmospheric mean surface pressure over its scale height (1). ...
Earth flies between sun and Jupiter on June 5
... Unlike Saturn's, Jupiter's rings are dark (albedo about .05). They're probably composed of very small grains of rocky material. Unlike Saturn's rings, they seem to contain no ice. Particles in Jupiter's rings probably don't stay there for long (due to atmospheric and magnetic drag). The Galileo spac ...
... Unlike Saturn's, Jupiter's rings are dark (albedo about .05). They're probably composed of very small grains of rocky material. Unlike Saturn's rings, they seem to contain no ice. Particles in Jupiter's rings probably don't stay there for long (due to atmospheric and magnetic drag). The Galileo spac ...
Unit 6: Astronomy
... through space! That's right, 18.5 miles per second, or 1110 miles in one hour! And as a passenger on the planet Earth, each year you travel approximately 600 million miles along the Earth's orbit around the Sun, held in orbit by gravity. And while you are traveling at these vast speeds through space ...
... through space! That's right, 18.5 miles per second, or 1110 miles in one hour! And as a passenger on the planet Earth, each year you travel approximately 600 million miles along the Earth's orbit around the Sun, held in orbit by gravity. And while you are traveling at these vast speeds through space ...
Space News Update
... Watch lower left of the Moon for Jupiter and then Regulus to rise in early evening. In early evening at this time of year, the Great Square of Pegasus balances on one corner high in the west. The vast Andromeda-Pegasus constellation complex runs all the way from near the zenith (Andromeda's foot) do ...
... Watch lower left of the Moon for Jupiter and then Regulus to rise in early evening. In early evening at this time of year, the Great Square of Pegasus balances on one corner high in the west. The vast Andromeda-Pegasus constellation complex runs all the way from near the zenith (Andromeda's foot) do ...
Earth in Space - Learning Outcomes
... The development of what we know about the Earth, Solar System and Universe is a fascinating study in its own right. From earliest times Man has wondered at and speculated over the ‘Nature of the Heavens’. It is hardly surprising that most people (until around 1500 A.D.) thought that the Sun revolved ...
... The development of what we know about the Earth, Solar System and Universe is a fascinating study in its own right. From earliest times Man has wondered at and speculated over the ‘Nature of the Heavens’. It is hardly surprising that most people (until around 1500 A.D.) thought that the Sun revolved ...