THE SOLAR SYSTEM
... Jovian). Pluto is considered by many astronomers to no longer be a planet, since there are now several known objects in orbits similar to Pluto's and of similar size - these are believed to be members of the Kuiper-belt. In addition to the major planets, there are a large number of moons, asteroids, ...
... Jovian). Pluto is considered by many astronomers to no longer be a planet, since there are now several known objects in orbits similar to Pluto's and of similar size - these are believed to be members of the Kuiper-belt. In addition to the major planets, there are a large number of moons, asteroids, ...
Measuring the Properties of Stars
... dependancy on two properties of a star; it’s surface size (4R2) and its surface temperature (T). These are direct relationships. An increase in either of the properties, results in an increase in Luminosity. The MKSA (metric system) unit for luminosity is the same as that for the power unit of ligh ...
... dependancy on two properties of a star; it’s surface size (4R2) and its surface temperature (T). These are direct relationships. An increase in either of the properties, results in an increase in Luminosity. The MKSA (metric system) unit for luminosity is the same as that for the power unit of ligh ...
Nebulas & Stars
... is PKS-2349 which is only about 1500 million light years away from Earth Quasars can live for a very long time scientists say that quasars that were discovered around 35 ...
... is PKS-2349 which is only about 1500 million light years away from Earth Quasars can live for a very long time scientists say that quasars that were discovered around 35 ...
Earth`s Place in the Universe Test 1
... 17) A planet similar to Earth has four moons roughly the same distance away. The moon that will MOST affect tides on the planet is the one that has the greatest A) mass. C) density. B) volume. ...
... 17) A planet similar to Earth has four moons roughly the same distance away. The moon that will MOST affect tides on the planet is the one that has the greatest A) mass. C) density. B) volume. ...
July - Magic Valley Astronomical Society
... Jupiter's Great Red Spot, but measuring about half the was because of the discovery of another planet, Uranus. size, the area was nicknamed the Great Dark Spot. The Astronomers had noted that Uranus did not behave as it should according to Newton's Laws of Motion. The reason, spot moved at about 700 ...
... Jupiter's Great Red Spot, but measuring about half the was because of the discovery of another planet, Uranus. size, the area was nicknamed the Great Dark Spot. The Astronomers had noted that Uranus did not behave as it should according to Newton's Laws of Motion. The reason, spot moved at about 700 ...
Pluto_Ceres_ASP
... (1) A planet is a celestial body that (a) has sufficient mass for its self-gravity to overcome rigid body forces so that it assumes a hydrostatic equilibrium (nearly round) shape1, and (b) is in orbit around a star, and is neither a star nor a satellite of a planet. (2) We distinguish between the ei ...
... (1) A planet is a celestial body that (a) has sufficient mass for its self-gravity to overcome rigid body forces so that it assumes a hydrostatic equilibrium (nearly round) shape1, and (b) is in orbit around a star, and is neither a star nor a satellite of a planet. (2) We distinguish between the ei ...
PLANETS
... Cores: Gas giants may have a rocky or metallic core—in fact, such a core is thought to be required for a gas giant to form. H and He: The majority of its mass is in the form of the gaseous hydrogen and helium, with traces of water, methane, ...
... Cores: Gas giants may have a rocky or metallic core—in fact, such a core is thought to be required for a gas giant to form. H and He: The majority of its mass is in the form of the gaseous hydrogen and helium, with traces of water, methane, ...
STARS
... * Has a very very high density – Denisties vary, but a grape sizedpiece of white dwarf matter might have as much mass as a truck. *No nuclear reactions – Therefore, what heat they have is left over from the days when the star did carry out nuclear reactions *Low luminosity, yet a very high temperatu ...
... * Has a very very high density – Denisties vary, but a grape sizedpiece of white dwarf matter might have as much mass as a truck. *No nuclear reactions – Therefore, what heat they have is left over from the days when the star did carry out nuclear reactions *Low luminosity, yet a very high temperatu ...
solutions - Las Cumbres Observatory
... 1. How do these graphs compare with the 1 solar mass star? The time scale is very different...10,000 Myr vs 10. The luminosity graph looks very different from the 1 Solar mass. The 30 solar mass spends most of its life slowly increasing in brightness, while the 1 solar mass star has much more const ...
... 1. How do these graphs compare with the 1 solar mass star? The time scale is very different...10,000 Myr vs 10. The luminosity graph looks very different from the 1 Solar mass. The 30 solar mass spends most of its life slowly increasing in brightness, while the 1 solar mass star has much more const ...
1 1. The Solar System
... and can be erased very easily, so that the same CCD can be used over and over again. As outlined above, the main property of an integrating sensor is that it will build more and more signal with time, as more and more light falls on it. This allows such sensors to detect faint light sources provided ...
... and can be erased very easily, so that the same CCD can be used over and over again. As outlined above, the main property of an integrating sensor is that it will build more and more signal with time, as more and more light falls on it. This allows such sensors to detect faint light sources provided ...
Stars - Lauer Science
... Hydrogen and some helium was made at the beginning of the Universe (Big Bang). • All other elements were made inside of stars, and then spewed out into space by the supernova explosions! ...
... Hydrogen and some helium was made at the beginning of the Universe (Big Bang). • All other elements were made inside of stars, and then spewed out into space by the supernova explosions! ...
Lecture #4 - History of Astronomy - Ptolemy to Kepler
... exists a force, between the sun and planets, that weakens with increasing distance – Invested Sun with physical properties necessary for the uniform description of planetary motions ...
... exists a force, between the sun and planets, that weakens with increasing distance – Invested Sun with physical properties necessary for the uniform description of planetary motions ...
Interactive Vocabulary Review for Outer Space Indicator
... A natural, luminous, celestial body is better known as a STAR! ...
... A natural, luminous, celestial body is better known as a STAR! ...
Document
... • Earth’s oceans and moderate temperatures provided the ideal conditions for life to emerge and flourish. • Organisms that produced food and oxygen by photosynthesis appeared about 3.5 billion years ago, followed by more complex life forms. • It is thought that between 5 million and 30 million speci ...
... • Earth’s oceans and moderate temperatures provided the ideal conditions for life to emerge and flourish. • Organisms that produced food and oxygen by photosynthesis appeared about 3.5 billion years ago, followed by more complex life forms. • It is thought that between 5 million and 30 million speci ...
Pocket Planetarium V17N3.indd
... planets will be less than 4 degrees apart; of course, Venus is the brighter of the two. Jupiter in the morning sky As summer begins, Jupiter is situated on the far side of the Sun and is not visible. But the bright planet quickly moves from behind the Sun, and by early July it appears above the hori ...
... planets will be less than 4 degrees apart; of course, Venus is the brighter of the two. Jupiter in the morning sky As summer begins, Jupiter is situated on the far side of the Sun and is not visible. But the bright planet quickly moves from behind the Sun, and by early July it appears above the hori ...
Earth`s Motion and Seasons
... Main Sequence Star: hydrogen fueled star Makes up about 90% of stars Our sun is a main sequence Two types ...
... Main Sequence Star: hydrogen fueled star Makes up about 90% of stars Our sun is a main sequence Two types ...
Today`s Powerpoint
... Remember, takes energetic UV photons to ionize H. Hot, massive stars produce huge amounts of these. Such short-lived stars spend all their lives in the stellar nursery of their birth, so emission nebulae mark sites of ongoing star formation. Many stars of lower mass are forming too, but make few UV ...
... Remember, takes energetic UV photons to ionize H. Hot, massive stars produce huge amounts of these. Such short-lived stars spend all their lives in the stellar nursery of their birth, so emission nebulae mark sites of ongoing star formation. Many stars of lower mass are forming too, but make few UV ...
Article Reference - Archive ouverte UNIGE
... (radial velocities or transits), the occurrence rate of hot Jupiters orbiting solar-type stars is low. It has been estimated to be as high as 1.5 ± 0.6% by Cumming et al. (2008) from radial velocity surveys, and as low as 0.5 ± 0.1% by Howard et al. (2012) from the Kepler results. Johnson et al. (20 ...
... (radial velocities or transits), the occurrence rate of hot Jupiters orbiting solar-type stars is low. It has been estimated to be as high as 1.5 ± 0.6% by Cumming et al. (2008) from radial velocity surveys, and as low as 0.5 ± 0.1% by Howard et al. (2012) from the Kepler results. Johnson et al. (20 ...
FORMATION AND ORBIT OF HOT JUPITERS 1 Formation and Orbit
... a few days, and it is more commonly thought that they first formed further out in their solar system and then migrated inwards towards their main star. Hot Jupiter's surface temperatures are usually around 6000 degrees Fahrenheit. Studying other solar systems and their hot jupiters helps us because ...
... a few days, and it is more commonly thought that they first formed further out in their solar system and then migrated inwards towards their main star. Hot Jupiter's surface temperatures are usually around 6000 degrees Fahrenheit. Studying other solar systems and their hot jupiters helps us because ...
Lecture 3: The age of the elements, and the formation of the earth
... origins of meteorites. Evidence points to the asteroid belt between Mars and Jupiter. This makes some sense, as the asteroid belt is thought to be the remnant of a failed planet: either one that hasn't formed or one that has broken up. There are two basic types of meteorites: stony and iron. About 9 ...
... origins of meteorites. Evidence points to the asteroid belt between Mars and Jupiter. This makes some sense, as the asteroid belt is thought to be the remnant of a failed planet: either one that hasn't formed or one that has broken up. There are two basic types of meteorites: stony and iron. About 9 ...
Part 1
... at the American Association for Advancement of Sciences, their listeners were skeptical. Asteroids hitting Earth? Wiping out species? It seemed incredible. At that very moment, unknown to the audience, an asteroid named Hermes halfway between Mars and Jupiter was beginning a long plunge toward our p ...
... at the American Association for Advancement of Sciences, their listeners were skeptical. Asteroids hitting Earth? Wiping out species? It seemed incredible. At that very moment, unknown to the audience, an asteroid named Hermes halfway between Mars and Jupiter was beginning a long plunge toward our p ...
slooh celebrates dwarf planet night with ceres dancing with asteroid
... same small piece of sky while also being easily visible through backyard telescopes. Both are unique. Vesta is the only asteroid that sometimes reaches nakedeye visibility, thanks to being whiter than any other. Ceres is spherical, possibly contains a thin atmosphere like Pluto, and, also like Pl ...
... same small piece of sky while also being easily visible through backyard telescopes. Both are unique. Vesta is the only asteroid that sometimes reaches nakedeye visibility, thanks to being whiter than any other. Ceres is spherical, possibly contains a thin atmosphere like Pluto, and, also like Pl ...
The Turbulent Birth of Stars and Planets - Max-Planck
... be an orbiting body. It is located about a billion kilometers away from its central star, a distance comparable to that between Jupiter and the Sun. But these observations are at the limits of what is technically feasible for the astronomers. They were thus unable to determine beyond all doubt exact ...
... be an orbiting body. It is located about a billion kilometers away from its central star, a distance comparable to that between Jupiter and the Sun. But these observations are at the limits of what is technically feasible for the astronomers. They were thus unable to determine beyond all doubt exact ...
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.