The Formation of Planetary Systems
... not have to explain. There is plenty of scope for planets to evolve after their formation, so things that may have happened after the initial state of the solar system was established need not be included in our list. Examples are Mercury’s 3:2 spin–orbit coupling, Venus’s runaway greenhouse effect, ...
... not have to explain. There is plenty of scope for planets to evolve after their formation, so things that may have happened after the initial state of the solar system was established need not be included in our list. Examples are Mercury’s 3:2 spin–orbit coupling, Venus’s runaway greenhouse effect, ...
Meteorites and the Early Solar System
... After considerable efforts to identify and date pristine chondrules and CAIs that have not had their isotopic systems reset by asteroidal processing, a consistent chronology for the formation of chondrules and CAIs has finally been achieved. The most precise absolute ages of chondrules and CAIs come ...
... After considerable efforts to identify and date pristine chondrules and CAIs that have not had their isotopic systems reset by asteroidal processing, a consistent chronology for the formation of chondrules and CAIs has finally been achieved. The most precise absolute ages of chondrules and CAIs come ...
PTYS/ASTR 206
... objects orbiting the Sun, called Edgeworth-Kuiper objects (or Kuiper-belt objects, KBOs), it has been suggested that Pluto is simply one of these and is not a planet • Many KBO’s are in orbital resonances with Neptune (3:2 resonance “Plutino”) • This is further complicated by the fact that the rec ...
... objects orbiting the Sun, called Edgeworth-Kuiper objects (or Kuiper-belt objects, KBOs), it has been suggested that Pluto is simply one of these and is not a planet • Many KBO’s are in orbital resonances with Neptune (3:2 resonance “Plutino”) • This is further complicated by the fact that the rec ...
An Unbiased Near-infrared Interferometric Survey for Hot
... would suggest that the origin is a collisionally depleting planetesimal belt. Alternatively a strong correlation with the presence of an outer disc would suggest that the hot material is supplied through some mechanism from this outer reservoir. Our team carried out the first large, NIR interferomet ...
... would suggest that the origin is a collisionally depleting planetesimal belt. Alternatively a strong correlation with the presence of an outer disc would suggest that the hot material is supplied through some mechanism from this outer reservoir. Our team carried out the first large, NIR interferomet ...
CHAPTER 8 Survey of Solar Systems
... sistency of molten lava and no solid surface at all. Despite such diversity, the Solar System possesses an underlying order, an order from which astronomers attempt to read the story of how our Solar System came to be. The Solar System formed in the extremely remote past, over 4.5 billion years ago. ...
... sistency of molten lava and no solid surface at all. Despite such diversity, the Solar System possesses an underlying order, an order from which astronomers attempt to read the story of how our Solar System came to be. The Solar System formed in the extremely remote past, over 4.5 billion years ago. ...
Page 1 - Sciss
... phenomena are responsible for the way we see the universe today, and not all of them happen on a grand scale. When giant stars explode as “supernovas,” they seed the galaxies with heavy elements that make planets and life possible. Some collisions we’re only just now starting to understand. As the u ...
... phenomena are responsible for the way we see the universe today, and not all of them happen on a grand scale. When giant stars explode as “supernovas,” they seed the galaxies with heavy elements that make planets and life possible. Some collisions we’re only just now starting to understand. As the u ...
PLANETS
... and particularly those in the terrestrial planet/asteroidal region—are faint and are lost in the glare of their central stars. However, when bodies in this zone collide, they initiate cascades of further collisions among the debris and between it and other members of the system, eventually grinding ...
... and particularly those in the terrestrial planet/asteroidal region—are faint and are lost in the glare of their central stars. However, when bodies in this zone collide, they initiate cascades of further collisions among the debris and between it and other members of the system, eventually grinding ...
Untitled
... universe seems like an awfully waste of space. From what is understood about our known universe is that, it may be infinitely large and the one that we are familiar with might as well be one of many universes that are possibly our there in the vast regions of space and time. So life would pop up onl ...
... universe seems like an awfully waste of space. From what is understood about our known universe is that, it may be infinitely large and the one that we are familiar with might as well be one of many universes that are possibly our there in the vast regions of space and time. So life would pop up onl ...
Inner Solar System Material Discovered in the Oort Cloud
... C/2014 S3 was observed with a dust coma at 2.1 and 2.2 AU (see Fig. 1). By 2.3 AU, the activity had decreased, but a small coma was still visible. To test whether the dust coma ...
... C/2014 S3 was observed with a dust coma at 2.1 and 2.2 AU (see Fig. 1). By 2.3 AU, the activity had decreased, but a small coma was still visible. To test whether the dust coma ...
Atmospheric circulations of terrestrial planets orbiting low
... M-star habitability are wrong. The primary goal of this study is to follow up on the above previous efforts to examine habitability and atmospheric circulation of M-star planets, focusing on their sensitivities to planetary rotation period. Previous modeling studies have shown that changes in rotati ...
... M-star habitability are wrong. The primary goal of this study is to follow up on the above previous efforts to examine habitability and atmospheric circulation of M-star planets, focusing on their sensitivities to planetary rotation period. Previous modeling studies have shown that changes in rotati ...
rosetta - The Institute of Mathematical Sciences
... taken many photos of the comet and the European Space Agency, which launched Rosetta, is making all these pictures available on their web-site. See the pictures on the next few pages. Soon a decision will be taken, based on these images, on where to land Philae. All the details, including the landi ...
... taken many photos of the comet and the European Space Agency, which launched Rosetta, is making all these pictures available on their web-site. See the pictures on the next few pages. Soon a decision will be taken, based on these images, on where to land Philae. All the details, including the landi ...
IR Universe
... horizontally across the image. Blue sources are cool stars within our Galaxy, which show an obvious concentration to the galactic plane and center. Yellow-green sources are galaxies which are basically uniformly distributed across the sky, but show an enhancement along a great circle above the galac ...
... horizontally across the image. Blue sources are cool stars within our Galaxy, which show an obvious concentration to the galactic plane and center. Yellow-green sources are galaxies which are basically uniformly distributed across the sky, but show an enhancement along a great circle above the galac ...
Astronomy - Glen Ridge Public Schools
... 1. What is Astronomy and how does it differ from Astrology? 2. How big is the universe? 3. What units of distance are used in astronomy? 4. How was the first successful determination of light speed made? 5. How do we measure distances to nearby stars? 6. What is the basic structure of the solar syst ...
... 1. What is Astronomy and how does it differ from Astrology? 2. How big is the universe? 3. What units of distance are used in astronomy? 4. How was the first successful determination of light speed made? 5. How do we measure distances to nearby stars? 6. What is the basic structure of the solar syst ...
No Slide Title
... • describe the formation of the extra-solar planets: • Planets form from dust which agglomerates into cores which then accrete gas from a disc. • A gravitational instability in a protostellar disc creates a number of giant planets. • Both models have trouble reproducing both the observed distributio ...
... • describe the formation of the extra-solar planets: • Planets form from dust which agglomerates into cores which then accrete gas from a disc. • A gravitational instability in a protostellar disc creates a number of giant planets. • Both models have trouble reproducing both the observed distributio ...
Video Lesson Information Astronomy: Observations & Theories Astronomy 1
... (JPL), and astronomical observatories. This journey introduces the planets, stars, and galaxies that will be presented and discussed throughout the course. Lesson 2 - Observing the Sky Explaining the concept of a scientific model, this lesson introduces the celestial sphere as a model to help descri ...
... (JPL), and astronomical observatories. This journey introduces the planets, stars, and galaxies that will be presented and discussed throughout the course. Lesson 2 - Observing the Sky Explaining the concept of a scientific model, this lesson introduces the celestial sphere as a model to help descri ...
COMETS
... are often the first emissions observed as a comet approaches the Sun.This makes sense if the ice occurs as a clathrate hydrate, in which minor constituents are trapped in cavities within waterice crystal lattice. Thus, the sublimation of water ice may control the release and escape of all substance ...
... are often the first emissions observed as a comet approaches the Sun.This makes sense if the ice occurs as a clathrate hydrate, in which minor constituents are trapped in cavities within waterice crystal lattice. Thus, the sublimation of water ice may control the release and escape of all substance ...
2. The World at Large: From the Big Bang to Black Holes
... If the stars were distributed uniformly in space, were shining forever without change, then there would be no gap between the stars. In every direction you would see a star – some close, some far away. The night sky would be everywhere as bright as the surface of a star. The night sky is dark, howev ...
... If the stars were distributed uniformly in space, were shining forever without change, then there would be no gap between the stars. In every direction you would see a star – some close, some far away. The night sky would be everywhere as bright as the surface of a star. The night sky is dark, howev ...
View PDF - Sara Seager
... it directly across the face of its host star. For such a “transiting” planet, it is possible to determine the planet’s mass and radius, its orbital parameters, and its atmospheric properties.1 Of particular interest are planets with sizes between those of the Earth and Neptune. Little is known about ...
... it directly across the face of its host star. For such a “transiting” planet, it is possible to determine the planet’s mass and radius, its orbital parameters, and its atmospheric properties.1 Of particular interest are planets with sizes between those of the Earth and Neptune. Little is known about ...
CENTRAL TEXAS COLLEGE
... Astronomy was the first of the sciences, and when colleges and universities were established in the middle Ages, it was one of the seven subjects taught to all students. It has always had important applications, including calendar making, time keeping, and navigation. Nowadays, astronomy is adding o ...
... Astronomy was the first of the sciences, and when colleges and universities were established in the middle Ages, it was one of the seven subjects taught to all students. It has always had important applications, including calendar making, time keeping, and navigation. Nowadays, astronomy is adding o ...
What is a planet? - X-ray and Observational Astronomy Group
... massive, close-in planets • It is not yet sensitive to planets as small as Earth, even close-in • As orbital period increases, the method becomes insensitive to planets less massive than Jupiter • The length of time that the surveys have been active (since 1989) sets the upper orbital period limit – ...
... massive, close-in planets • It is not yet sensitive to planets as small as Earth, even close-in • As orbital period increases, the method becomes insensitive to planets less massive than Jupiter • The length of time that the surveys have been active (since 1989) sets the upper orbital period limit – ...
Here - Osservatorio di Arcetri
... in fact provides the unequivocal proof of the presence of a chemical species. Such identification requires the direct comparison of the frequencies retrieved from the astronomical observations with those obtained in the laboratory, with gas-phase species being mostly discovered via their rotational ...
... in fact provides the unequivocal proof of the presence of a chemical species. Such identification requires the direct comparison of the frequencies retrieved from the astronomical observations with those obtained in the laboratory, with gas-phase species being mostly discovered via their rotational ...
Kepler Mission Workshop Presentation
... • No method exists for detecting habitable planets from ground-based observatories • The Kepler Mission uses photometry to detect transits and can detect Earth-size planets from space • The Kepler Mission is optimized to detect habitable planets in the habitable zone of solarlike stars ...
... • No method exists for detecting habitable planets from ground-based observatories • The Kepler Mission uses photometry to detect transits and can detect Earth-size planets from space • The Kepler Mission is optimized to detect habitable planets in the habitable zone of solarlike stars ...
Exploring Solar Systems Across the Universe
... system where one body is much more massive than the other one (bottom), such as in a star-planet system, is much closer to the center of the more massive body and can even be located inside the large body. ...
... system where one body is much more massive than the other one (bottom), such as in a star-planet system, is much closer to the center of the more massive body and can even be located inside the large body. ...
CH. 7 - science1d
... group of three stars that orbit each other. This group is called the Centauri system (Figure 7.8). It lies about 4.3 ly away from the solar system. If it were possible for you to have a cellphone conversation with someone living near these stars, just saying hello to each other would require more th ...
... group of three stars that orbit each other. This group is called the Centauri system (Figure 7.8). It lies about 4.3 ly away from the solar system. If it were possible for you to have a cellphone conversation with someone living near these stars, just saying hello to each other would require more th ...
Panspermia
Panspermia (from Greek πᾶν (pan), meaning ""all"", and σπέρμα (sperma), meaning ""seed"") is the hypothesis that life exists throughout the Universe, distributed by meteoroids, asteroids, comets, planetoids and, also, by spacecraft in the form of unintended contamination by microorganisms.Panspermia is a hypothesis proposing that microscopic life forms that can survive the effects of space, such as extremophiles, become trapped in debris that is ejected into space after collisions between planets and small Solar System bodies that harbor life. Some organisms may travel dormant for an extended amount of time before colliding randomly with other planets or intermingling with protoplanetary disks. If met with ideal conditions on a new planet's surfaces, the organisms become active and the process of evolution begins. Panspermia is not meant to address how life began, just the method that may cause its distribution in the Universe.Pseudo-panspermia (sometimes called ""soft panspermia"" or ""molecular panspermia"") argues that the pre-biotic organic building blocks of life originated in space and were incorporated in the solar nebula from which the planets condensed and were further —and continuously— distributed to planetary surfaces where life then emerged (abiogenesis). From the early 1970s it was becoming evident that interstellar dust consisted of a large component of organic molecules. Interstellar molecules are formed by chemical reactions within very sparse interstellar or circumstellar clouds of dust and gas. The dust plays a critical role of shielding the molecules from the ionizing effect of ultraviolet radiation emitted by stars.Several simulations in laboratories and in low Earth orbit suggest that ejection, entry and impact is survivable for some simple organisms.