Did Saturn`s Rings Form During The Late Heavy Bombardment?
... al. 2000). For the impactors' size distribution, functions compatible with either Ganymede’s craters, Triton’s craters or present day ecliptic comets are assumed. With these assumptions, Zahnle et al. derive a cratering rate on Iapetus that is between 2x10-16 km-2year-1 and 8x10-15 km-2year-1 (for c ...
... al. 2000). For the impactors' size distribution, functions compatible with either Ganymede’s craters, Triton’s craters or present day ecliptic comets are assumed. With these assumptions, Zahnle et al. derive a cratering rate on Iapetus that is between 2x10-16 km-2year-1 and 8x10-15 km-2year-1 (for c ...
the surface composition of mercury as seen from messenger
... the planet’s starting composition, but no models have yet been reported that are based on the geochemical results from MESSENGER. However, Charlier et al. (2013) suggest that variations in lava composition across Mercury’s surface may have arisen from different magma sources within a crystallizing, ...
... the planet’s starting composition, but no models have yet been reported that are based on the geochemical results from MESSENGER. However, Charlier et al. (2013) suggest that variations in lava composition across Mercury’s surface may have arisen from different magma sources within a crystallizing, ...
The Moons of Jupiter
... Ejected particles that remain neutral co-orbit with Io Electrons easily stripped from the ejected sulfur, chlorine, and oxygen atoms by the intense magnetic field of Jupiter Resulting plasma remains in a torus around Jupiter and rotates with the magnetic field of Jupiter Rapidly rotating magnetic fi ...
... Ejected particles that remain neutral co-orbit with Io Electrons easily stripped from the ejected sulfur, chlorine, and oxygen atoms by the intense magnetic field of Jupiter Resulting plasma remains in a torus around Jupiter and rotates with the magnetic field of Jupiter Rapidly rotating magnetic fi ...
TLW explain how fossils provide evidence of the history of the Earth.
... Students are fascinated with the skies but often have misconceptions and a difficult time understanding the concept of size and distance. Students predict the sizes of the Earth and Moon relative to the Sun. Using play clay, the students create Earth and Moon models based on an eight-inch diameter b ...
... Students are fascinated with the skies but often have misconceptions and a difficult time understanding the concept of size and distance. Students predict the sizes of the Earth and Moon relative to the Sun. Using play clay, the students create Earth and Moon models based on an eight-inch diameter b ...
Gravity 2015-‐16 Next Generation Science Standards
... ALL objects have a gravitational pull. Some pulls are strong, others are not. What determines the strength? Answer: 2 factors determine the strength of gravity: 1) mass of the object(s) 2) distance be ...
... ALL objects have a gravitational pull. Some pulls are strong, others are not. What determines the strength? Answer: 2 factors determine the strength of gravity: 1) mass of the object(s) 2) distance be ...
1 A Solar System Is Born - Middletown Public Schools
... Nebulas are where stars are born. Star clusters have stars that were born in nebulas. ...
... Nebulas are where stars are born. Star clusters have stars that were born in nebulas. ...
2010 Spring Release, Science and Technology/Engineering
... Which of the following keeps the planets in our solar system in orbit around the Sun? A. atmospheric pressure B. gravitational force C. electromagnetic energy D. thermal energy 2007 Spring Release, Science and Technology/Engineering - Grade 8 Question 5: Multiple-Choice Reporting Category: Earth and ...
... Which of the following keeps the planets in our solar system in orbit around the Sun? A. atmospheric pressure B. gravitational force C. electromagnetic energy D. thermal energy 2007 Spring Release, Science and Technology/Engineering - Grade 8 Question 5: Multiple-Choice Reporting Category: Earth and ...
PDF format
... • The nebular theory predicts that massive Jupiterlike planets should not form inside the frost line (at << 5 AU). • The discovery of hot Jupiters has forced reexamination of nebular theory. • Planetary migration or gravitational encounters may explain hot Jupiters. ...
... • The nebular theory predicts that massive Jupiterlike planets should not form inside the frost line (at << 5 AU). • The discovery of hot Jupiters has forced reexamination of nebular theory. • Planetary migration or gravitational encounters may explain hot Jupiters. ...
Lecture1.2014_v4 - UCO/Lick Observatory
... southern features: probably stable vortex structures Page 32 ...
... southern features: probably stable vortex structures Page 32 ...
Broward County Benchmark Correlation
... resolution that involves the definition of a planet. Planets and other bodies in our Solar System are now categorized in the following way: • Planet Celestial body that (a) is in orbit around the Sun, (b) has sufficient mass for its selfgravity to overcome rigid body forces so that it assumes a hydr ...
... resolution that involves the definition of a planet. Planets and other bodies in our Solar System are now categorized in the following way: • Planet Celestial body that (a) is in orbit around the Sun, (b) has sufficient mass for its selfgravity to overcome rigid body forces so that it assumes a hydr ...
Astronomy - Great Smoky Mountains Institute at Tremont
... would be about that size. Go through the rest of the planets in order: Mercury would be a pinhead and Venus would be half a grain of rice. Our planet, Earth, which is 8,000 miles wide, would be the other half of the rice grain. Mars would be another pinhead, Saturn a regular marble, and Uranus and N ...
... would be about that size. Go through the rest of the planets in order: Mercury would be a pinhead and Venus would be half a grain of rice. Our planet, Earth, which is 8,000 miles wide, would be the other half of the rice grain. Mars would be another pinhead, Saturn a regular marble, and Uranus and N ...
Juno
... spacecraft's pointing extremely stable and easy to control. Just after launch, and before its solar arrays are deployed, Juno will be spun-up by rocket motors on its still attached second-stage rocket booster. While in orbit at Jupiter, the spinning spacecraft sweeps the fields of view of its instru ...
... spacecraft's pointing extremely stable and easy to control. Just after launch, and before its solar arrays are deployed, Juno will be spun-up by rocket motors on its still attached second-stage rocket booster. While in orbit at Jupiter, the spinning spacecraft sweeps the fields of view of its instru ...
CLIP B - ETAMedia
... Neptune is the sister ice giant to Uranus, with a very similar combination of hydrogen, helium, and methane gas. Their cores are comparable in both size and ...
... Neptune is the sister ice giant to Uranus, with a very similar combination of hydrogen, helium, and methane gas. Their cores are comparable in both size and ...
The Geologic Time Scale
... *By studying the characteristics of rocks and the fossils within them, geologists can interpret the environments in which the rocks were deposited, reconstruct Earth’s history, and possibly predict events or conditions in the future. ...
... *By studying the characteristics of rocks and the fossils within them, geologists can interpret the environments in which the rocks were deposited, reconstruct Earth’s history, and possibly predict events or conditions in the future. ...
RADIO-FREQUENCY OCCULTATIONS AND THE LOW
... observation that the degree-2 geoid and shape are highly correlated (0.99) [3] but requires an accompanying high admittance source, for which a deep density anomaly or a surface load on an elastic lithosphere are obvious candidates. However, we have been unable to identify a plausible deep mantle or ...
... observation that the degree-2 geoid and shape are highly correlated (0.99) [3] but requires an accompanying high admittance source, for which a deep density anomaly or a surface load on an elastic lithosphere are obvious candidates. However, we have been unable to identify a plausible deep mantle or ...
Astronomy Test over Jovian Planets
... 3. The least dense planet in the solar system is a. Jupiter c. Saturn b. Neptune d. Uranus 4. The smallest Jovian planet in the solar system is a. Jupiter c. Saturn b. Neptune d. Uranus 5. Which of the following planets has the most complex ring system? a. Neptune c. Uranus b. Jupiter d. Saturn 6. A ...
... 3. The least dense planet in the solar system is a. Jupiter c. Saturn b. Neptune d. Uranus 4. The smallest Jovian planet in the solar system is a. Jupiter c. Saturn b. Neptune d. Uranus 5. Which of the following planets has the most complex ring system? a. Neptune c. Uranus b. Jupiter d. Saturn 6. A ...
Didactic guide - Planetario de Pamplona
... RGB: Sure. There are some white (6) ........... . They all run parallel to the Equator. You can also see yellow clouds and Jupiter's most (7) ........... feature: the Red Spot. This is a hurricane bigger than (8) ........... and, as far as we know, is there to stay. The first time it was observed wa ...
... RGB: Sure. There are some white (6) ........... . They all run parallel to the Equator. You can also see yellow clouds and Jupiter's most (7) ........... feature: the Red Spot. This is a hurricane bigger than (8) ........... and, as far as we know, is there to stay. The first time it was observed wa ...
dialogue 2
... the steelyard, is not improperly termed the center of gravity of the weights A and B. E. I understand you perfectly well; and am much obliged to you for the pains you have taken hitherto to make every thing so plain to me. M. And, now, if you twist the thread by which the wire and balls are suspende ...
... the steelyard, is not improperly termed the center of gravity of the weights A and B. E. I understand you perfectly well; and am much obliged to you for the pains you have taken hitherto to make every thing so plain to me. M. And, now, if you twist the thread by which the wire and balls are suspende ...
The Astrobiology Primer - Mary Ann Liebert, Inc. publishers
... organic molecules necessary for life to form—are produced by stars. (For a specific definition of “organic,” which is not equivalent to “biological,” see Sec. 3A.) At the end of a star’s life, this material is partially returned to the place from whence it came: the interstellar medium (ISM). The IS ...
... organic molecules necessary for life to form—are produced by stars. (For a specific definition of “organic,” which is not equivalent to “biological,” see Sec. 3A.) At the end of a star’s life, this material is partially returned to the place from whence it came: the interstellar medium (ISM). The IS ...
Terrestrial Planets
... Terrestrial planets • Prototypes: Earth, Venus, Mars • Primarily composed of rocks • In the Solar System (ONLY) orbital radii less than giant planets Much more massive terrestrial planets could exist (>10 Earth masses), though none are present in the Solar System. The Solar system also has asteroids ...
... Terrestrial planets • Prototypes: Earth, Venus, Mars • Primarily composed of rocks • In the Solar System (ONLY) orbital radii less than giant planets Much more massive terrestrial planets could exist (>10 Earth masses), though none are present in the Solar System. The Solar system also has asteroids ...
Jupiter and its moons
... virtually no vertical relief and a very high albedo. There are very few craters on Europa, with only three craters larger than 5 km in diameter. This would seem to indicate a young and active surface; based on estimates of the frequency of cometary bombardment Europa probably endures, Europa's surfa ...
... virtually no vertical relief and a very high albedo. There are very few craters on Europa, with only three craters larger than 5 km in diameter. This would seem to indicate a young and active surface; based on estimates of the frequency of cometary bombardment Europa probably endures, Europa's surfa ...
Many geologists study rocks and minerals, as rocks
... Rocks are classified according to how they are formed. There are 3 types. They can be igneous, sedimentary or metamorphic. Igneous rocks are hard rocks possessing variably colored crystals. There are two types of igneous rocks: Intrusive igneous rocks, which are formed from magma (molten rock) that ...
... Rocks are classified according to how they are formed. There are 3 types. They can be igneous, sedimentary or metamorphic. Igneous rocks are hard rocks possessing variably colored crystals. There are two types of igneous rocks: Intrusive igneous rocks, which are formed from magma (molten rock) that ...
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.