3 The Outer Planets
... Which Planet Is Next? Some astronomers predicted that there was a planet beyond Uranus before the planet was observed. Uranus did not move in its orbit exactly as they expected. The force of gravity due to another large object was affecting it. Using predictions of its effect on Uranus, astronomers ...
... Which Planet Is Next? Some astronomers predicted that there was a planet beyond Uranus before the planet was observed. Uranus did not move in its orbit exactly as they expected. The force of gravity due to another large object was affecting it. Using predictions of its effect on Uranus, astronomers ...
The Dynamics-Based Approach to Studying Terrestrial Exoplanets
... The study of planets orbiting nearby, main-sequence stars has proceeded at a breakneck pace: Less than ten years elapsed from the first discovery of a sub-Jupiter-mass companion to a Sunlike star (Mayor & Queloz 1995) to the first direct detection of light emitted from such an exoplanet (Deming et a ...
... The study of planets orbiting nearby, main-sequence stars has proceeded at a breakneck pace: Less than ten years elapsed from the first discovery of a sub-Jupiter-mass companion to a Sunlike star (Mayor & Queloz 1995) to the first direct detection of light emitted from such an exoplanet (Deming et a ...
Introductory Astrophysics
... – Plato: truth through pure thought over observations. Circle – perfect form. – Aristotle (and almost everybody): Earth is unmoving, heavens are perfect – Ptolemy (AD 140): The Geocentric universe model ...
... – Plato: truth through pure thought over observations. Circle – perfect form. – Aristotle (and almost everybody): Earth is unmoving, heavens are perfect – Ptolemy (AD 140): The Geocentric universe model ...
Why use these sites
... Astronomy and planetary exploration reveal the solar system's structure, scale, and change over time. As a basis for understanding this concept: a. ...
... Astronomy and planetary exploration reveal the solar system's structure, scale, and change over time. As a basis for understanding this concept: a. ...
oceanworlds1
... suggests we should refocus our exploration efforts if we want to find life. Oceans Are Much More Common in the Solar System Than You Think Quick—How many ocean worlds exist in our solar system? You’re probably familiar with at least one; that lovely blue marble we call home. But the truth is that no ...
... suggests we should refocus our exploration efforts if we want to find life. Oceans Are Much More Common in the Solar System Than You Think Quick—How many ocean worlds exist in our solar system? You’re probably familiar with at least one; that lovely blue marble we call home. But the truth is that no ...
Homework 2 (Due Sept 18, 2014)
... a. I make it a habit to be weightless for at least a fraction of a second every day.! b. Suppose you could enter a vacuum chamber (a chamber with no air in it) on Earth. Inside this chamber, a feather would fall at the same rate as a rock.! c. When an astronaut goes on a space walk outside the Space ...
... a. I make it a habit to be weightless for at least a fraction of a second every day.! b. Suppose you could enter a vacuum chamber (a chamber with no air in it) on Earth. Inside this chamber, a feather would fall at the same rate as a rock.! c. When an astronaut goes on a space walk outside the Space ...
1. Base your answer to the following question
... (1) gas captured as Earth passed through a gas cloud (2) the gas surrounding Earth at the time of its formation (3) escaped gas from the sun (4) gas released from the interior of our planet 10. What was the most abundant gas present in the original planetary atmosphere? (1) water vapor (3) hydrogen ...
... (1) gas captured as Earth passed through a gas cloud (2) the gas surrounding Earth at the time of its formation (3) escaped gas from the sun (4) gas released from the interior of our planet 10. What was the most abundant gas present in the original planetary atmosphere? (1) water vapor (3) hydrogen ...
Great Migrations & other natural history tales
... Only then will you be able to focus during the lecture, not on notation or copying strange-looking things, but on pointers to which things in the book are most important, comments widening the scope of the text etc. And you’ll have many relevant questions concepts not clear yet from the book or lect ...
... Only then will you be able to focus during the lecture, not on notation or copying strange-looking things, but on pointers to which things in the book are most important, comments widening the scope of the text etc. And you’ll have many relevant questions concepts not clear yet from the book or lect ...
The Imprecise Search for Habitability
... Silicon dioxide (quartz) is an overly stable sink of silicon and is largely insoluble in water. These properties prevent silicon from forming a rich variety of complex molecules like carbon does. Such an expectation is consistent with what astronomers find when they point their telescopes at seeming ...
... Silicon dioxide (quartz) is an overly stable sink of silicon and is largely insoluble in water. These properties prevent silicon from forming a rich variety of complex molecules like carbon does. Such an expectation is consistent with what astronomers find when they point their telescopes at seeming ...
Planets in different environments
... Hyades (0.6 Gyrs, 400 Msun): 98 stars surveyed for 5 years, no planet found (Cochran et al. 2002, Guenther 2005). Then a planet of eTau found (Sato et al. 2007), and a hot Jupiter (Quinn et al. 2013). M67 (3.2-5 Gyrs, 1400 Msun): 3 planet found --> Frequency of hot Jupiters: 2+3.01.5 %, consiste ...
... Hyades (0.6 Gyrs, 400 Msun): 98 stars surveyed for 5 years, no planet found (Cochran et al. 2002, Guenther 2005). Then a planet of eTau found (Sato et al. 2007), and a hot Jupiter (Quinn et al. 2013). M67 (3.2-5 Gyrs, 1400 Msun): 3 planet found --> Frequency of hot Jupiters: 2+3.01.5 %, consiste ...
Formation of the Solar System Chapter 8
... The idea that the solar system was born from the collapse of a cloud of dust and gas for proposed by Immanuel Kant (1755) and by Pierre Simon Laplace 40 years later. During the first part of the 20th century, some proposed that the solar system was the result of a near collision of the Sun with anot ...
... The idea that the solar system was born from the collapse of a cloud of dust and gas for proposed by Immanuel Kant (1755) and by Pierre Simon Laplace 40 years later. During the first part of the 20th century, some proposed that the solar system was the result of a near collision of the Sun with anot ...
Can We Make A Star?
... • Fist we need to get a hold of a lot of helium and hydrogen • Then we need to get the mass of gas to move so that the gasses will react with each other • Then we just sit way back and wait until the gasses explode into a fireball ...
... • Fist we need to get a hold of a lot of helium and hydrogen • Then we need to get the mass of gas to move so that the gasses will react with each other • Then we just sit way back and wait until the gasses explode into a fireball ...
Integrative Studies 410 Our Place in the Universe
... fuel to burn) we can obtain the lifetime • Large hot blue stars: ~ 20 million years • The Sun: 10 billion years • Small cool red dwarfs: trillions of years ...
... fuel to burn) we can obtain the lifetime • Large hot blue stars: ~ 20 million years • The Sun: 10 billion years • Small cool red dwarfs: trillions of years ...
Untitled - IES Bachiller Sabuco
... The numerous smaller bodies that habit in the solar system are the satellites of the planets; the large number of asteroids , (small rocky bodies that orbiting the Sun), mostly between Mars and Jupiter but there are asteroids elsewhere. The comets (small icy bodies) come and go from the other parts ...
... The numerous smaller bodies that habit in the solar system are the satellites of the planets; the large number of asteroids , (small rocky bodies that orbiting the Sun), mostly between Mars and Jupiter but there are asteroids elsewhere. The comets (small icy bodies) come and go from the other parts ...
What is the net result of the proton-proton chain? a. 2 protons make
... b. The brightest stars in old globular clusters are red giants c. The open clusters have as many members as the globular clusters, but spread their members stars over a much larger volume d. The turn-off point will be lower down the main sequence for older clusters e. We now observe the recent forma ...
... b. The brightest stars in old globular clusters are red giants c. The open clusters have as many members as the globular clusters, but spread their members stars over a much larger volume d. The turn-off point will be lower down the main sequence for older clusters e. We now observe the recent forma ...
Our Solar System
... Comets develop a tail that points away from the Sun. This is caused by blowing solar winds and/or partial melting when the comet gets closer to the Sun. The most famous comet is “Halley’s Comet”. It has an orbital period of 76 years. It was last here in 1985. It will return in 2061. Another famous c ...
... Comets develop a tail that points away from the Sun. This is caused by blowing solar winds and/or partial melting when the comet gets closer to the Sun. The most famous comet is “Halley’s Comet”. It has an orbital period of 76 years. It was last here in 1985. It will return in 2061. Another famous c ...
AST 301—Review for Exam 3 Consult “Guide to Reading and Study
... that there are several techniques that could be used to detect extrasolar planets, but that basically only one has been so far successful (with a few recent detections using another technique). Can you explain why that is? (We also went over this in class.) Of the numerous extrasolar planets that ha ...
... that there are several techniques that could be used to detect extrasolar planets, but that basically only one has been so far successful (with a few recent detections using another technique). Can you explain why that is? (We also went over this in class.) Of the numerous extrasolar planets that ha ...
Refuges for Life in a - University of Arizona
... has been a huge breakthrough: the discovery of giant, Jupitersize planets around sunlike stars. Not every sunlike star has such a planet. In fact, the giant planets discovered to date are primarily found around stars that are rich in chemical elements heavier than helium— what astronomers call “meta ...
... has been a huge breakthrough: the discovery of giant, Jupitersize planets around sunlike stars. Not every sunlike star has such a planet. In fact, the giant planets discovered to date are primarily found around stars that are rich in chemical elements heavier than helium— what astronomers call “meta ...
Old Final
... A) Main Sequence, Red Giant, Horizontal Branch, AGB, Planetary Nebula, White Dwarf B) Main Sequence, Red Giant,ABG, Horizontal Branch, Planetary Nebula, White Dwarf C) Main Sequence, AGB, Horizontal Branch, Red Giant, Planetary Nebula, White Dwarf D) Main Sequence, Horizontal Branch, AGB, Red Giant, ...
... A) Main Sequence, Red Giant, Horizontal Branch, AGB, Planetary Nebula, White Dwarf B) Main Sequence, Red Giant,ABG, Horizontal Branch, Planetary Nebula, White Dwarf C) Main Sequence, AGB, Horizontal Branch, Red Giant, Planetary Nebula, White Dwarf D) Main Sequence, Horizontal Branch, AGB, Red Giant, ...
Planet Walk Activity
... 1) Measure the distance from the “Sun” to the #4 position of Mars, Jupiter, and Saturn. Plot and label their positions on the grid. (Each floor tile is 1 foot by 1 foot) 2) Plot and label the #2 and #6 positions of Earth on the grid, as well. 3) Draw lines from the #2 position of Earth through each ...
... 1) Measure the distance from the “Sun” to the #4 position of Mars, Jupiter, and Saturn. Plot and label their positions on the grid. (Each floor tile is 1 foot by 1 foot) 2) Plot and label the #2 and #6 positions of Earth on the grid, as well. 3) Draw lines from the #2 position of Earth through each ...
Chapter 10 Workbook
... C. a scientist who studies astronomy and physics D. a scientist who studies biology and chemistry 2. As a planet gets closer to the Sun in its elliptical orbit, its speed does which of the following? A. decreases B. increases C. increases, then decreases D. stays the same 3. Which statement does not ...
... C. a scientist who studies astronomy and physics D. a scientist who studies biology and chemistry 2. As a planet gets closer to the Sun in its elliptical orbit, its speed does which of the following? A. decreases B. increases C. increases, then decreases D. stays the same 3. Which statement does not ...
Powers of ten notation
... Unlike all the other planets Venus rotates backward. How would the diurnal and yearly motion of the Sun differ on Venus than on the Earth? ...
... Unlike all the other planets Venus rotates backward. How would the diurnal and yearly motion of the Sun differ on Venus than on the Earth? ...
Chapter 2: Perihelion of Mercury`s Orbit
... A third prediction from Einstein’s theory of general relativity is the excess precession of the perihelion of the orbit of Mercury of about 0.01° per century. This effect had been known and unexplained for some time, so in some sense its correct explanation represented an immediate success of the th ...
... A third prediction from Einstein’s theory of general relativity is the excess precession of the perihelion of the orbit of Mercury of about 0.01° per century. This effect had been known and unexplained for some time, so in some sense its correct explanation represented an immediate success of the th ...
Planetary habitability
Planetary habitability is the measure of a planet's or a natural satellite's potential to develop and sustain life. Life may develop directly on a planet or satellite or be transferred to it from another body, a theoretical process known as panspermia. As the existence of life beyond Earth is unknown, planetary habitability is largely an extrapolation of conditions on Earth and the characteristics of the Sun and Solar System which appear favourable to life's flourishing—in particular those factors that have sustained complex, multicellular organisms and not just simpler, unicellular creatures. Research and theory in this regard is a component of planetary science and the emerging discipline of astrobiology.An absolute requirement for life is an energy source, and the notion of planetary habitability implies that many other geophysical, geochemical, and astrophysical criteria must be met before an astronomical body can support life. In its astrobiology roadmap, NASA has defined the principal habitability criteria as ""extended regions of liquid water, conditions favourable for the assembly of complex organic molecules, and energy sources to sustain metabolism.""In determining the habitability potential of a body, studies focus on its bulk composition, orbital properties, atmosphere, and potential chemical interactions. Stellar characteristics of importance include mass and luminosity, stable variability, and high metallicity. Rocky, terrestrial-type planets and moons with the potential for Earth-like chemistry are a primary focus of astrobiological research, although more speculative habitability theories occasionally examine alternative biochemistries and other types of astronomical bodies.The idea that planets beyond Earth might host life is an ancient one, though historically it was framed by philosophy as much as physical science. The late 20th century saw two breakthroughs in the field. The observation and robotic spacecraft exploration of other planets and moons within the Solar System has provided critical information on defining habitability criteria and allowed for substantial geophysical comparisons between the Earth and other bodies. The discovery of extrasolar planets, beginning in the early 1990s and accelerating thereafter, has provided further information for the study of possible extraterrestrial life. These findings confirm that the Sun is not unique among stars in hosting planets and expands the habitability research horizon beyond the Solar System.The chemistry of life may have begun shortly after the Big Bang, 13.8 billion years ago, during a habitable epoch when the Universe was only 10–17 million years old. According to the panspermia hypothesis, microscopic life—distributed by meteoroids, asteroids and other small Solar System bodies—may exist throughout the universe. Nonetheless, Earth is the only place in the universe known to harbor life. Estimates of habitable zones around other stars, along with the discovery of hundreds of extrasolar planets and new insights into the extreme habitats here on Earth, suggest that there may be many more habitable places in the universe than considered possible until very recently. On 4 November 2013, astronomers reported, based on Kepler space mission data, that there could be as many as 40 billion Earth-sized planets orbiting in the habitable zones of Sun-like stars and red dwarfs within the Milky Way. 11 billion of these estimated planets may be orbiting Sun-like stars. The nearest such planet may be 12 light-years away, according to the scientists.