Mercury = Hermes Mythology
... Volcanism - Hadley Rille • 150km long, 1.5km across, 300meters deep • Formed by flowing lava 3.3 billion years ago ...
... Volcanism - Hadley Rille • 150km long, 1.5km across, 300meters deep • Formed by flowing lava 3.3 billion years ago ...
Chapter 28
... – Most of the moon’s craters formed from ASTEROIDS colliding with the moon for 4 billion years – The moon is covered in craters because it has no atmosphere to protect it • The moon is covered in dust and rock from space debris called REGOLITH • Lunar rocks are very similar to Earth’s rocks. They ar ...
... – Most of the moon’s craters formed from ASTEROIDS colliding with the moon for 4 billion years – The moon is covered in craters because it has no atmosphere to protect it • The moon is covered in dust and rock from space debris called REGOLITH • Lunar rocks are very similar to Earth’s rocks. They ar ...
Is There Life Beyond Earth?
... • Need a large Jupiter-sized planet to keep asteroids away – Size of planet -if its mass is too large, the planet will become a gaseous planet with an atmosphere made essentially of hydrogen and helium. In such conditions, the chemical reactions of life cannot occur. If it is too small, it will not ...
... • Need a large Jupiter-sized planet to keep asteroids away – Size of planet -if its mass is too large, the planet will become a gaseous planet with an atmosphere made essentially of hydrogen and helium. In such conditions, the chemical reactions of life cannot occur. If it is too small, it will not ...
Is There Life Beyond Earth2
... • Need a large Jupiter-sized planet to keep asteroids away – Size of planet -if its mass is too large, the planet will become a gaseous planet with an atmosphere made essentially of hydrogen and helium. In such conditions, the chemical reactions of life cannot occur. If it is too small, it will not ...
... • Need a large Jupiter-sized planet to keep asteroids away – Size of planet -if its mass is too large, the planet will become a gaseous planet with an atmosphere made essentially of hydrogen and helium. In such conditions, the chemical reactions of life cannot occur. If it is too small, it will not ...
How Did Our Moon Form and What`s Been Happening Since?
... Basalt – fine grained dark igneous rock rich in iron and magnesium (heavy stuff that sank in magma ocean) Few hundred meters thick Rocks are 4.3 to 3.1 billion years old … flows as recently as 1 billion years ago ...
... Basalt – fine grained dark igneous rock rich in iron and magnesium (heavy stuff that sank in magma ocean) Few hundred meters thick Rocks are 4.3 to 3.1 billion years old … flows as recently as 1 billion years ago ...
Earth`s early water formation
... Outer planetary bodies, however, such as the moons of Jupiter and comets, were far enough away from the Sun to retain ice. During a period around 4 billion years ago called the Late Heavy Bombardment, massive objects, probably from the outer solar system, hit Earth and the inner planets. It's possib ...
... Outer planetary bodies, however, such as the moons of Jupiter and comets, were far enough away from the Sun to retain ice. During a period around 4 billion years ago called the Late Heavy Bombardment, massive objects, probably from the outer solar system, hit Earth and the inner planets. It's possib ...
Is There Life Beyond Earth?
... d) Scientists hypothesize that there is a liquid _______________ under Europa’s icethe water could be kept liquid by heat coming from inside Europa. 11) Water on Saturn’s Moon? a) Images from NASA’s Cassini spacecraft indicate that one of Saturn’s moons, _______________________, may contain pockets ...
... d) Scientists hypothesize that there is a liquid _______________ under Europa’s icethe water could be kept liquid by heat coming from inside Europa. 11) Water on Saturn’s Moon? a) Images from NASA’s Cassini spacecraft indicate that one of Saturn’s moons, _______________________, may contain pockets ...
Ch 22 AstroGoes
... 16. Does Earth move faster in its orbit near perihelion (January) or near aphelion (July)? Based on your answer, is the solar day longest in January or July? 17. The moon rotates very slowly on its axis. Predict how this affects the lunar surface temperature. ...
... 16. Does Earth move faster in its orbit near perihelion (January) or near aphelion (July)? Based on your answer, is the solar day longest in January or July? 17. The moon rotates very slowly on its axis. Predict how this affects the lunar surface temperature. ...
A Storm of Asteroids - Lunar and Planetary Institute
... Moon rocks formed by the impacts record the age of craters and basins. Interestingly, the ages of rocks collected by astronauts appear to have formed at the same time, 3.8 to 4.0 billion years ago. This suggests there may have been a storm of impacting asteroids half a billion years after the format ...
... Moon rocks formed by the impacts record the age of craters and basins. Interestingly, the ages of rocks collected by astronauts appear to have formed at the same time, 3.8 to 4.0 billion years ago. This suggests there may have been a storm of impacting asteroids half a billion years after the format ...
The Geological History of the Moon
... rarity of Earth-like planets Some scientists think that a collision of the sort which produced the Earth’s Moon might be highly improbable. That would make our Earth-Moon system rare in the universe. If the Moon played a crucial role in making the Earth the way it is (tides, stabilization of the rot ...
... rarity of Earth-like planets Some scientists think that a collision of the sort which produced the Earth’s Moon might be highly improbable. That would make our Earth-Moon system rare in the universe. If the Moon played a crucial role in making the Earth the way it is (tides, stabilization of the rot ...
Celestial bodies
... Neap Tide-Lowest of the low tides- 1st and 3rd quarter moons- 90° High Tide and Low Tide-regular level tidescrescents and gibbous moons Eclipses- one celestial body casts a shadow on another celestial body Lunar Eclipse-Earth cast shadow on the moon (LEM) ...
... Neap Tide-Lowest of the low tides- 1st and 3rd quarter moons- 90° High Tide and Low Tide-regular level tidescrescents and gibbous moons Eclipses- one celestial body casts a shadow on another celestial body Lunar Eclipse-Earth cast shadow on the moon (LEM) ...
What makes a world habitable
... Meteorite impacts Biochemical source; such as oxygen for respiration ...
... Meteorite impacts Biochemical source; such as oxygen for respiration ...
Astro 101-001 Summer 2013 Assigmnent #2 Due: Monday 6/24
... (e) faint clouds of ice in the thin lunar atmosphere. 6. The atmospheric gases primarily responsible for Earth’s greenhouse effect are: (a) carbon monoxide and methane; (b) hydrogen and helium; (c) oxygen and carbon dioxide; (d) argon and water vapor; (e) water vapor and carbon dioxide. ...
... (e) faint clouds of ice in the thin lunar atmosphere. 6. The atmospheric gases primarily responsible for Earth’s greenhouse effect are: (a) carbon monoxide and methane; (b) hydrogen and helium; (c) oxygen and carbon dioxide; (d) argon and water vapor; (e) water vapor and carbon dioxide. ...
Lunar water
Lunar water is water that is present on the Moon. Liquid water cannot persist at the Moon's surface, and water vapor is decomposed by sunlight, with hydrogen quickly lost to outer space. However, scientists have since the 1960s conjectured that water ice could survive in cold, permanently shadowed craters at the Moon's poles. Water molecules are also detected in the thin layer of gases above the lunar surface.Water (H2O), and the chemically related hydroxyl group (-OH), can also exist in forms chemically bound as hydrates and hydroxides to lunar minerals (rather than as free water), and evidence strongly suggests that this is indeed the case in low concentrations over much of the Moon's surface. In fact, adsorbed water is calculated to exist at trace concentrations of 10 to 1000 parts per million. In 1978 it was reported that samples returned by the Soviet Luna 24 probe contained 0.1% water by mass sample.Inconclusive evidence of free water ice at the lunar poles was accumulated from a variety of observations suggesting the presence of bound hydrogen.On 18 November 2008, the Moon Impact probe was released from India's Chandrayaan-1 at a height of 100 kilometers. During its 25-minute descent, the impact probe's Chandra's Altitudinal Composition (CHACE) recorded evidence of water in 650 mass spectra gathered in the thin atmosphere above the Moon's surface. In September 2009, Chandrayaan-1 detected water on the Moon and hydroxyl absorption lines in reflected sunlight.In November 2009, NASA reported that its LCROSS space probe had detected a significant amount of hydroxyl group in the material thrown up from a south polar crater by an impactor; this may be attributed to water-bearing materials – what appears to be ""near pure crystalline water-ice"".In March 2010, it was reported that the Mini-RF on board Chandrayaan-1 had discovered more than 40 permanently darkened craters near the Moon's north pole which are hypothesized to contain an estimated 600 million metric tonnes (1.3 trillion pounds) of water-ice.Water may have been delivered to the Moon over geological timescales by the regular bombardment of water-bearing comets, asteroids and meteoroids or continuously produced in situ by the hydrogen ions (protons) of the solar wind impacting oxygen-bearing minerals.The search for the presence of lunar water has attracted considerable attention and motivated several recent lunar missions, largely because of water's usefulness in rendering long-term lunar habitation feasible.