oceanworlds1
... The Earth is not the only planet in the solar system with an ocean. Scattered throughout the outer reaches are icy asteroids, moons, and dwarf planets; any of which could contain a large buried body of water. This intriguing possibility suggests we should refocus our exploration efforts if we want t ...
... The Earth is not the only planet in the solar system with an ocean. Scattered throughout the outer reaches are icy asteroids, moons, and dwarf planets; any of which could contain a large buried body of water. This intriguing possibility suggests we should refocus our exploration efforts if we want t ...
Jovian Planets
... • Only 4-5 rings are generally visible from Earth. Dark “Cassini’s division” is between the 2 main rings. • Voyager (1980) found more than 100,000 ringlets about 20 m thick • The largest moon Titan: which is a very interesting object. • Titan has a thick N2 atmosphere like the Earth! Hazy atmosphere ...
... • Only 4-5 rings are generally visible from Earth. Dark “Cassini’s division” is between the 2 main rings. • Voyager (1980) found more than 100,000 ringlets about 20 m thick • The largest moon Titan: which is a very interesting object. • Titan has a thick N2 atmosphere like the Earth! Hazy atmosphere ...
Slides from the fourth lecture
... • Well dispersed and available – Occurs even in interstellar space • Many organic compounds found in ISM, comets, meteors (despite extremely harsh conditions) – Easily delivered to early Earth, or produced locally • Biochemistry – Requires liquid water? – Arises naturally when basic conditions met? ...
... • Well dispersed and available – Occurs even in interstellar space • Many organic compounds found in ISM, comets, meteors (despite extremely harsh conditions) – Easily delivered to early Earth, or produced locally • Biochemistry – Requires liquid water? – Arises naturally when basic conditions met? ...
Homework #3 Solutions
... This would be surprising. Our current observations of Mercury show it covered by craters, and absolutely barren of water or an atmosphere. Since sand dunes are built up by erosion cause either by winds of an atmosphere or of currents in water, we therefore wouldn’t expect to see sand dunes since we ...
... This would be surprising. Our current observations of Mercury show it covered by craters, and absolutely barren of water or an atmosphere. Since sand dunes are built up by erosion cause either by winds of an atmosphere or of currents in water, we therefore wouldn’t expect to see sand dunes since we ...
Jupiter`s Galilean satellites
... – Explain the fresh icy surface – Explain the presence of magnetic field • “Salty” water acts as conducting fluid for the dynamo • Ammonia is probably the “salt”, also acting as ...
... – Explain the fresh icy surface – Explain the presence of magnetic field • “Salty” water acts as conducting fluid for the dynamo • Ammonia is probably the “salt”, also acting as ...
Midterm - Department of Physics and Astronomy
... The following exam is open book and open notes, however you are not allowed to confer with any other students. There are 5 problems (with subsections) each worth 20 points. You should show all of your work in an easily readable fashion and explain your reasoning in a straightforward clear manner. Pl ...
... The following exam is open book and open notes, however you are not allowed to confer with any other students. There are 5 problems (with subsections) each worth 20 points. You should show all of your work in an easily readable fashion and explain your reasoning in a straightforward clear manner. Pl ...
406P PPT - Why Water and the Hunt for Exoplanets
... • Ammonia has just one lone pair of electrons. • Water has much stronger H-bonds, so it is harder to vaporize and more likely to be a liquid at Earth temperatures (Oo C to 100o C) ...
... • Ammonia has just one lone pair of electrons. • Water has much stronger H-bonds, so it is harder to vaporize and more likely to be a liquid at Earth temperatures (Oo C to 100o C) ...
The Solar System
... A.U.-equal to the average distance between the Earth and the sun This distance is 150 million km or 93 million ...
... A.U.-equal to the average distance between the Earth and the sun This distance is 150 million km or 93 million ...
Take-home midterm, due Fri 3/16
... Take-home Midterm Exam. Please allow yourself only 3 hours. You may look up any constants (G, charge of electron etc) and physical data (heat capacities, albedo of a planet or mass of a moon, etc). You may also use your notes and old homework papers, but not any textbooks or websites (except to look ...
... Take-home Midterm Exam. Please allow yourself only 3 hours. You may look up any constants (G, charge of electron etc) and physical data (heat capacities, albedo of a planet or mass of a moon, etc). You may also use your notes and old homework papers, but not any textbooks or websites (except to look ...
ASTR-1020: Astronomy II Course Lecture Notes - Faculty
... 3. Most life on Earth is composed of cells (viruses are not), which have proteins as their building blocks. Proteins have amino acids as their building blocks. 4. The molecule DNA is located in the nuclei of cells. This molecule carries all of the genetic information. It is through this molecule tha ...
... 3. Most life on Earth is composed of cells (viruses are not), which have proteins as their building blocks. Proteins have amino acids as their building blocks. 4. The molecule DNA is located in the nuclei of cells. This molecule carries all of the genetic information. It is through this molecule tha ...
October 2007
... CO2 dissolves in oceans, damping greenhouse effect More water condenses, more CO2 is absorbed If too cold, ice forms less cloud cover more energy • No oxygen at this point, since it would have been used up producing “rust” • Tertiary atmosphere: early life contributes oxygen ...
... CO2 dissolves in oceans, damping greenhouse effect More water condenses, more CO2 is absorbed If too cold, ice forms less cloud cover more energy • No oxygen at this point, since it would have been used up producing “rust” • Tertiary atmosphere: early life contributes oxygen ...
Planets
... One satellite called “the Moon”. The planet is often referred to as the Earth-Moon System, because the Earth and moon are similar in size and close to each other. The only planet known by humans to have “life” A mostly water planet ...
... One satellite called “the Moon”. The planet is often referred to as the Earth-Moon System, because the Earth and moon are similar in size and close to each other. The only planet known by humans to have “life” A mostly water planet ...
Astrobio
... Temperatures that allow liquid water may be very important We discussed the Goldilocks idea for Venus (too hot), Mars (too cold), Earth (just right) ...
... Temperatures that allow liquid water may be very important We discussed the Goldilocks idea for Venus (too hot), Mars (too cold), Earth (just right) ...
Facilitator Information - Lunar and Planetary Institute
... corrosive clouds of sulfuric acid. We know, however, that there are life forms on Earth which can survive in very harsh environments. Bacteria and very simple plant life can survive in unexpected places. However, because of the very high temperature, pressure, and corrosive atmosphere the environmen ...
... corrosive clouds of sulfuric acid. We know, however, that there are life forms on Earth which can survive in very harsh environments. Bacteria and very simple plant life can survive in unexpected places. However, because of the very high temperature, pressure, and corrosive atmosphere the environmen ...
Goal to get to know the moons of Saturn a bit better
... frozen water. • But at these temperatures, water is hard as rock. • Surroundings is a watery, tarry version of sand. ...
... frozen water. • But at these temperatures, water is hard as rock. • Surroundings is a watery, tarry version of sand. ...
Document
... • Estimated number of technological civilizations present in the Milky Way galaxy is given by the average rate of star formation fraction of stars having planetary systems average number of planets within the habitable zone for various types of star and star system fraction of habitable planet ...
... • Estimated number of technological civilizations present in the Milky Way galaxy is given by the average rate of star formation fraction of stars having planetary systems average number of planets within the habitable zone for various types of star and star system fraction of habitable planet ...
march 2011 - Holt Planetarium
... Here is the latest family portrait showing Titan, Enceladus and Pandora. Saturn's ice-shrouded moon Enceladus is pumping out more heat from its southern pole than all the hot springs at Yellowstone National Park in the US, and scientists are at a loss to explain it. The prodigious outpouring of ene ...
... Here is the latest family portrait showing Titan, Enceladus and Pandora. Saturn's ice-shrouded moon Enceladus is pumping out more heat from its southern pole than all the hot springs at Yellowstone National Park in the US, and scientists are at a loss to explain it. The prodigious outpouring of ene ...
Interiors of Jupiter and Saturn - University of Iowa Astrophysics
... 1944: discovery that spectrum had absorpLon lines of methane: a moon with an atmosphere. Known to be about twice the mass and about 50 percent larger in diameter ...
... 1944: discovery that spectrum had absorpLon lines of methane: a moon with an atmosphere. Known to be about twice the mass and about 50 percent larger in diameter ...
1. For most of human history it was believed that Earth was at the
... 105. The fact that the strength of gravity decreases with distance means the force of gravity exerted by one object on another (e.g., the Earth and Moon) is greater on the near side than the far side. This effect is commonly referred to as a ...
... 105. The fact that the strength of gravity decreases with distance means the force of gravity exerted by one object on another (e.g., the Earth and Moon) is greater on the near side than the far side. This effect is commonly referred to as a ...
Quick Quiz solutions for Chapters 8,9,10
... 37. Which must be true if Mars was warmer and wetter in the past: B- Mars once had a much thicker atmosphere. 38. Which of the following fundamental properties of Mars could explain why it once had a global magnetic field but later lost it? A- its small size 39.Under the leading scenario, if Mars on ...
... 37. Which must be true if Mars was warmer and wetter in the past: B- Mars once had a much thicker atmosphere. 38. Which of the following fundamental properties of Mars could explain why it once had a global magnetic field but later lost it? A- its small size 39.Under the leading scenario, if Mars on ...
Life: Definition, Origin, Criteria
... Collection of atoms Organic molecules • Where did life originate, on the Earth or extraterrestrial? • Have we been visited or are we the first? • Development of “intelligence” • Not all civilizations may (a) survive, or (b) explore and develop technology • Aliens in vastly different (a) forms of l ...
... Collection of atoms Organic molecules • Where did life originate, on the Earth or extraterrestrial? • Have we been visited or are we the first? • Development of “intelligence” • Not all civilizations may (a) survive, or (b) explore and develop technology • Aliens in vastly different (a) forms of l ...
THE CHEMICAL CHARACTERISTICS OF A TERRESTRIAL
... Introduction: Despite Titan’s distance from the Sun, it is characterized as Earth-like. Titan has a moderate atmosphere that is ten times more massive than Earth’s, albeit Titan is less than half the size of Earth. It also has weather patterns with rain, clouds, and wind [1], and even rivers, lakes, ...
... Introduction: Despite Titan’s distance from the Sun, it is characterized as Earth-like. Titan has a moderate atmosphere that is ten times more massive than Earth’s, albeit Titan is less than half the size of Earth. It also has weather patterns with rain, clouds, and wind [1], and even rivers, lakes, ...
Life: Definition, Origin, Criteria
... Collection of atoms Organic molecules • Where did life originate, on the Earth or extraterrestrial? • Have we been visited or are we the first? • Development of “intelligence” • Not all civilizations may (a) survive, or (b) explore and develop technology • Aliens in vastly different (a) forms of l ...
... Collection of atoms Organic molecules • Where did life originate, on the Earth or extraterrestrial? • Have we been visited or are we the first? • Development of “intelligence” • Not all civilizations may (a) survive, or (b) explore and develop technology • Aliens in vastly different (a) forms of l ...
Life on Titan
Whether there is life on Titan, the largest moon of Saturn, is at present an open question and a topic of scientific assessment and research. Titan is far colder than Earth, and its surface lacks stable liquid water; factors which have led some scientists to consider life there unlikely. On the other hand, its thick atmosphere is chemically active and rich in carbon compounds. On the surface there are bodies of liquid methane and ethane; some scientists speculate that these liquids might take the place of water in living cells different from those on Earth.In June 2010, scientists analysing data from the Cassini–Huygens mission reported anomalies in the atmosphere near the surface which could be consistent with the presence of methane-producing organisms, but may alternatively be due to non-living chemical or meteorological processes. The Cassini–Huygens mission was not equipped to look directly for micro-organisms or to provide a thorough inventory of complex organic compounds.A hypothetical cell membrane capable of functioning in liquid methane has been modeled.