The interiors of Planets
... ! Composition of Impactors • Cores may be molten: Dependent on internal temperature & pressure ...
... ! Composition of Impactors • Cores may be molten: Dependent on internal temperature & pressure ...
Astronomy 10: Introduction to General Astronomy Instructor: Tony
... R = P 2/3 = (250)2/3 ≈ 40 AU (10) page 108, question 10 We expect Venus to have a larger angular size in the crescent phase rather than the gibbous phase. The reason why is that to appear as a crescent, Venus must be between Earth and the Sun, thus Venus is closer than in the gibbous phase. (11) pag ...
... R = P 2/3 = (250)2/3 ≈ 40 AU (10) page 108, question 10 We expect Venus to have a larger angular size in the crescent phase rather than the gibbous phase. The reason why is that to appear as a crescent, Venus must be between Earth and the Sun, thus Venus is closer than in the gibbous phase. (11) pag ...
Lec2
... change with time? •Although the axis seems fixed on human time scales, it actually precesses over about 26,000 years. Polaris won’t always be the North Star. Positions of equinoxes shift around orbit; e.g., spring equinox, once in Aries, is now in Pisces! Earth’s axis precesses like the axis of ...
... change with time? •Although the axis seems fixed on human time scales, it actually precesses over about 26,000 years. Polaris won’t always be the North Star. Positions of equinoxes shift around orbit; e.g., spring equinox, once in Aries, is now in Pisces! Earth’s axis precesses like the axis of ...
Planet PowerPoint - Notes
... The closer the two objects are the more gravitational force they have. Ex: The Moon has as much larger impact on our tides than the Sun does. © KeslerScience.com ...
... The closer the two objects are the more gravitational force they have. Ex: The Moon has as much larger impact on our tides than the Sun does. © KeslerScience.com ...
How Old Is The Earth?
... If the Solar System formed from a common pool of matter, with uniformly distributed Pb isotopes, then all objects from that pool of matter should show similar amounts of the isotopes. Also, over time ...
... If the Solar System formed from a common pool of matter, with uniformly distributed Pb isotopes, then all objects from that pool of matter should show similar amounts of the isotopes. Also, over time ...
Meteors and Comets
... Scientists try to predict when comets will come too close to Earth Sometimes comets collide with planets and their moons Haley’s Comet is the most famous comet, it passes by Earth every 76 years – the last time it passed by Earth was in 1986 When Earth crosses the path of a comet, leftover dust and ...
... Scientists try to predict when comets will come too close to Earth Sometimes comets collide with planets and their moons Haley’s Comet is the most famous comet, it passes by Earth every 76 years – the last time it passed by Earth was in 1986 When Earth crosses the path of a comet, leftover dust and ...
1 - BYU Physics and Astronomy
... 17. The celestial meridian nowhere coincides with any (a) diurnal circle, (b) great circle, (c) hour circle, (d) vertical circle. 18. The "best" explanation for the moon's origin is that the moon formed (a) when the rapidly rotating protoearth became unstable and broke into two fragments, (b) indepe ...
... 17. The celestial meridian nowhere coincides with any (a) diurnal circle, (b) great circle, (c) hour circle, (d) vertical circle. 18. The "best" explanation for the moon's origin is that the moon formed (a) when the rapidly rotating protoearth became unstable and broke into two fragments, (b) indepe ...
Lunar eclipses
... • A rille is a long channel associated with lunar maria. A rille looks similar to a valley or a trench. ...
... • A rille is a long channel associated with lunar maria. A rille looks similar to a valley or a trench. ...
Calculating Large Distances
... two most accepted measures, astronomical units and light-years. Astronomical Units Astronomical Units (abbreviated A.U.) are equal to the average distance between the sun and earth. This distance is equal to 149,600,000 km. To calculate the distance in AU for any planet in our solar system, divide t ...
... two most accepted measures, astronomical units and light-years. Astronomical Units Astronomical Units (abbreviated A.U.) are equal to the average distance between the sun and earth. This distance is equal to 149,600,000 km. To calculate the distance in AU for any planet in our solar system, divide t ...
PHASES OF THE MOON
... Category Distance from Sun (Millions of Km) Period of revolution Diameter (km) Atmosphere ...
... Category Distance from Sun (Millions of Km) Period of revolution Diameter (km) Atmosphere ...
4.7_Earth,_Moon,_Sun
... This standard focuses on the Earth-moon-sun system and includes knowledge related to the motions of this system and the results of our unique position in it. This includes the presence of an atmosphere, liquid water, and life. It is intended that students will actively develop scientific investigati ...
... This standard focuses on the Earth-moon-sun system and includes knowledge related to the motions of this system and the results of our unique position in it. This includes the presence of an atmosphere, liquid water, and life. It is intended that students will actively develop scientific investigati ...
Lecture Note - Department of Electronic and Telecommunication
... • After next few billion years – Mars's eccentricity may grow to around 0.2, such that it lies on an Earth-crossing orbit, leading to a potential collision with the Earth. – Mercury's eccentricity may grow even further, and a close encounter with Venus could theoretically eject it from the Solar Sys ...
... • After next few billion years – Mars's eccentricity may grow to around 0.2, such that it lies on an Earth-crossing orbit, leading to a potential collision with the Earth. – Mercury's eccentricity may grow even further, and a close encounter with Venus could theoretically eject it from the Solar Sys ...
CT9b
... The point is that since T2/r3 is the same for all planets (says Kepler III), if we know the value of T2/r3 for any planet, then we know it for all the planets. For the Earth, T2/r3 = 1, so T2/r3 must equal 1 for all the planets. ...
... The point is that since T2/r3 is the same for all planets (says Kepler III), if we know the value of T2/r3 for any planet, then we know it for all the planets. For the Earth, T2/r3 = 1, so T2/r3 must equal 1 for all the planets. ...
Take a Grand Tour of the solar system at twice the speed of light
... and fill it with twice the mass of all the other planets combined: that’s the PTDC Jupiter. Large as it is, Jupiter is only about 1/1000 the mass of the sun. Several hundred Jupiters combined would barely be enough to form a respectable star. ...
... and fill it with twice the mass of all the other planets combined: that’s the PTDC Jupiter. Large as it is, Jupiter is only about 1/1000 the mass of the sun. Several hundred Jupiters combined would barely be enough to form a respectable star. ...
The Detection and Properties of Planetary Systems
... • How do planetary systems form? • Is this a common or an infrequent event? • How unique are the properties of our own solar system? • Are these qualities important for life to form? Up until now we have had only one laboratory to test planet formation theories. We need more! ...
... • How do planetary systems form? • Is this a common or an infrequent event? • How unique are the properties of our own solar system? • Are these qualities important for life to form? Up until now we have had only one laboratory to test planet formation theories. We need more! ...
February
... and face challenges with an open mind. So far, they have been taking risks by analyzing and interpreting the deeper meaning in poetry. They will eventually be tasked with writing their own informational poems about Colony Collapse Disorder in bees. Their inquiry project this Marking Period is to ...
... and face challenges with an open mind. So far, they have been taking risks by analyzing and interpreting the deeper meaning in poetry. They will eventually be tasked with writing their own informational poems about Colony Collapse Disorder in bees. Their inquiry project this Marking Period is to ...
doc - Clear Theology
... A. Definition. Uniformitarianism is an assumption that physical causes and effects in all ages have been only and always the same as those which we observe today. B. Reason. Evolutionists assume uniformitarianism because it is essential for their system. An evolutionist needs an old earth to support ...
... A. Definition. Uniformitarianism is an assumption that physical causes and effects in all ages have been only and always the same as those which we observe today. B. Reason. Evolutionists assume uniformitarianism because it is essential for their system. An evolutionist needs an old earth to support ...
Late Heavy Bombardment
The Late Heavy Bombardment (abbreviated LHB and also known as the lunar cataclysm) is a hypothetical event thought to have occurred approximately 4.1 to 3.8 billion years (Ga) ago, corresponding to the Neohadean and Eoarchean eras on Earth. During this interval, a disproportionately large number of asteroids apparently collided with the early terrestrial planets in the inner Solar System, including Mercury, Venus, Earth, and Mars. The LHB happened after the Earth and other rocky planets had formed and accreted most of their mass, but still quite early in Earth's history.Evidence for the LHB derives from lunar samples brought back by the Apollo astronauts. Isotopic dating of Moon rocks implies that most impact melts occurred in a rather narrow interval of time. Several hypotheses are now offered to explain the apparent spike in the flux of impactors (i.e. asteroids and comets) in the inner Solar System, but no consensus yet exists. The Nice model is popular among planetary scientists; it postulates that the gas giant planets underwent orbital migration and scattered objects in the asteroid and/or Kuiper belts into eccentric orbits, and thereby into the path of the terrestrial planets. Other researchers argue that the lunar sample data do not require a cataclysmic cratering event near 3.9 Ga, and that the apparent clustering of impact melt ages near this time is an artifact of sampling materials retrieved from a single large impact basin. They also note that the rate of impact cratering could be significantly different between the outer and inner zones of the Solar System.