... study the impact of a strong flare from the M dwarf, AD Leo, on the atmospheric chemistry of a hypothetical Earth-like planet located in the habitable zone. The simulations were performed using a 1-D photochemical model. We simulated six atmospheres with high concentrations of CO2 and CH4 . The resp ...
Mr - White Plains Public Schools
... There is a relationship between the temperatures of stars and how bright they are (luminosity). In general, the hotter a star the brighter. This is not always true though. For example, Polaris is the same temperature as our Sun, but is around 4000X brighter. This difference is due to the mass and si ...
... There is a relationship between the temperatures of stars and how bright they are (luminosity). In general, the hotter a star the brighter. This is not always true though. For example, Polaris is the same temperature as our Sun, but is around 4000X brighter. This difference is due to the mass and si ...
Ch. 22 Honors Study Guide Name 1. How did Eratosthenes
... 16. Kepler’s 1st law relates to the shape of planetary orbits which are with the Sun at one . This means that a planets to the Sun must change throughout its orbit. ...
... 16. Kepler’s 1st law relates to the shape of planetary orbits which are with the Sun at one . This means that a planets to the Sun must change throughout its orbit. ...
lecture5 - UMass Astronomy
... Venus went through a complete set of phases, just like the Moon. This was the first empirical evidence that allowed a definitive test of the geocentric and heliocentric models. ...
... Venus went through a complete set of phases, just like the Moon. This was the first empirical evidence that allowed a definitive test of the geocentric and heliocentric models. ...
PDF version
... like the rings of Saturn, the bright red Mars, and even a few neighbor galaxies! After all, there's much more to our universe than just the solar system, and learning about space doesn't have to be something that only astronauts can do. You can study astronomy at any age, and the more you know about ...
... like the rings of Saturn, the bright red Mars, and even a few neighbor galaxies! After all, there's much more to our universe than just the solar system, and learning about space doesn't have to be something that only astronauts can do. You can study astronomy at any age, and the more you know about ...
General Astronomy - Stockton University
... At this point in time, the ‘jury is still out’ and we really don’t know if Barnard’s Star was the first discovery of extra-solar planets. ...
... At this point in time, the ‘jury is still out’ and we really don’t know if Barnard’s Star was the first discovery of extra-solar planets. ...
Distribution of Elements in the Earth`s Crust
... “Some part of our being knows this is where we came from. We long to return. And we can. Because the cosmos is also within us. We are made of star stuff. We are a way for the cosmos to know itself.” —Carl Sagan The universe began about 13.8 billion years ago with the big bang, an event in which enor ...
... “Some part of our being knows this is where we came from. We long to return. And we can. Because the cosmos is also within us. We are made of star stuff. We are a way for the cosmos to know itself.” —Carl Sagan The universe began about 13.8 billion years ago with the big bang, an event in which enor ...
EXOPLANET Due to increasing incursions by hostile alien forces
... no magnetic field ¹¹ 4 billion years ago Venus had water on its surface, however due to a runaway greenhouse effect, all water evaporated. ¹¹ Atmosphere primarily composed of Carbon Dioxide. Because of this, much of the heat from the sun cannot escape through the thick clouds, and is trapped on the ...
... no magnetic field ¹¹ 4 billion years ago Venus had water on its surface, however due to a runaway greenhouse effect, all water evaporated. ¹¹ Atmosphere primarily composed of Carbon Dioxide. Because of this, much of the heat from the sun cannot escape through the thick clouds, and is trapped on the ...
The Milky Way
... b. The intense solar wind of the youthful Sun pushed gas and dust outward. c. The planets swept up gas, dust, and small particles. d. Close gravitational encounters with Jovian planets ejected ...
... b. The intense solar wind of the youthful Sun pushed gas and dust outward. c. The planets swept up gas, dust, and small particles. d. Close gravitational encounters with Jovian planets ejected ...
5 Habitable zones and Planetary atmospheres
... some flowing liquid. The used climate model should be modified by adding other greenhouse gases (e.g. CH4) and perhaps by including a more dense cloud cover on Mars. Tidal heating of satellites around giant planets, such as Jupiter’s satellite Europa, raises the possibility of liquid water existing ...
... some flowing liquid. The used climate model should be modified by adding other greenhouse gases (e.g. CH4) and perhaps by including a more dense cloud cover on Mars. Tidal heating of satellites around giant planets, such as Jupiter’s satellite Europa, raises the possibility of liquid water existing ...
CHAPTER 2 NOTES (STARS AND GALAXIES)
... atoms in the core so they fuse to form helium releasing energy in the form of heat and light ...
... atoms in the core so they fuse to form helium releasing energy in the form of heat and light ...
Jun - Wadhurst Astronomical Society
... This follows on from Brian’s informative talks for beginners introducing the planets in the Solar System, but having described all the planets, the asteroid belt and Dwarf Planets he now looks at theoretical ‘planets’ that probably never existed. As early as 1843, Urbain Le Verrier studied Mercury b ...
... This follows on from Brian’s informative talks for beginners introducing the planets in the Solar System, but having described all the planets, the asteroid belt and Dwarf Planets he now looks at theoretical ‘planets’ that probably never existed. As early as 1843, Urbain Le Verrier studied Mercury b ...
Linking Asteroids and Meteorites through Reflectance
... • By the next morning, the hair had disappeared. • To appease the furious king and queen (and save the lives of the temple priests), the court astronomer, Conon, announced that the offering had so pleased the goddess that she had placed it in the sky. • He indicated a cluster of stars that at the ti ...
... • By the next morning, the hair had disappeared. • To appease the furious king and queen (and save the lives of the temple priests), the court astronomer, Conon, announced that the offering had so pleased the goddess that she had placed it in the sky. • He indicated a cluster of stars that at the ti ...
Interactive Tutorial Activities in ASTR 310
... D) a is older than b because a has had many floods the extrasolar planet directly. Which of the following best C b has a larger diameter, takes less time that a to orbit describes the number of discoveries made by each method? and/or volcanic eruptions E) b receives more impacts than a so there is n ...
... D) a is older than b because a has had many floods the extrasolar planet directly. Which of the following best C b has a larger diameter, takes less time that a to orbit describes the number of discoveries made by each method? and/or volcanic eruptions E) b receives more impacts than a so there is n ...
Return both exam and scantron sheet when you
... 11. Once the hydrogen in the Sun’s core is fused into helium, further fusion of hydrogen into helium will go on in (a) the photosphere. (b) a shell surrounding the helium core. (c) the convection zone. 12. Planetary nebula is (a) a supernova remnant. (b) a nebula in which planets form around a star. ...
... 11. Once the hydrogen in the Sun’s core is fused into helium, further fusion of hydrogen into helium will go on in (a) the photosphere. (b) a shell surrounding the helium core. (c) the convection zone. 12. Planetary nebula is (a) a supernova remnant. (b) a nebula in which planets form around a star. ...
Study Guide
... White dwarfs, main sequence, giants, supergiants (be able to use the H-R diagram to label and classify) List the spectral classes for stars in order. O,B,A,F,G,K,M State the name and shape of our galaxy. The Milky Way – it is spiral shaped Describe the nuclear fusion reaction that takes place ...
... White dwarfs, main sequence, giants, supergiants (be able to use the H-R diagram to label and classify) List the spectral classes for stars in order. O,B,A,F,G,K,M State the name and shape of our galaxy. The Milky Way – it is spiral shaped Describe the nuclear fusion reaction that takes place ...
Mountain Skies - Pisgah Astronomical Research Institute
... ironically, was a list of objects not to look at if you were looking for comets. Generally, when comets are first discovered optically, they appear as faint, fuzzy objects that move against the pattern of background stars. The objects ...
... ironically, was a list of objects not to look at if you were looking for comets. Generally, when comets are first discovered optically, they appear as faint, fuzzy objects that move against the pattern of background stars. The objects ...
Could Planets orbiting Red Dwarf stars support Oxygenic
... - Although most stars orbit each other in groups of two or three, planets orbiting one or more stars may have strange, but not life impossible climates (2 or three Suns). - RDs are long lived – an apparent requirement for the evolution of complex life forms. - Although early RD star life is characte ...
... - Although most stars orbit each other in groups of two or three, planets orbiting one or more stars may have strange, but not life impossible climates (2 or three Suns). - RDs are long lived – an apparent requirement for the evolution of complex life forms. - Although early RD star life is characte ...
butoday20050915
... 2003UB313, the heavenly body is a member of the Kuiper Asteroid Belt. It’s the farthestknown object in the solar system, and bigger than Pluto, which was spotted by astronomers in 1930 and named the solar system’s ninth planet. ...
... 2003UB313, the heavenly body is a member of the Kuiper Asteroid Belt. It’s the farthestknown object in the solar system, and bigger than Pluto, which was spotted by astronomers in 1930 and named the solar system’s ninth planet. ...
Chapter 7
... formed Sun (protosun) will prevent the condensation of more volatile elements. Planets forming there will thus be made of nonvolatile, dense material. 4. Farther out, the eddies are larger and the temperatures cooler so large planets can form that are composed of volatile elements (light gases). 5. ...
... formed Sun (protosun) will prevent the condensation of more volatile elements. Planets forming there will thus be made of nonvolatile, dense material. 4. Farther out, the eddies are larger and the temperatures cooler so large planets can form that are composed of volatile elements (light gases). 5. ...
Final Exam from 2005
... d. from radioactive elements created in the Big Bang. 27. If any and all fusion suddenly stopped in the sun, the sun would a. remain the same size. b. collapse. c. expand slowly until it engulfs the earth. d. explode. 28. Which is the correct order for the layers of the sun’s atmosphere, from inner ...
... d. from radioactive elements created in the Big Bang. 27. If any and all fusion suddenly stopped in the sun, the sun would a. remain the same size. b. collapse. c. expand slowly until it engulfs the earth. d. explode. 28. Which is the correct order for the layers of the sun’s atmosphere, from inner ...
Shining Star A
... of northern and southern hemisphere. After viewing, have the students write their birthdays on a piece of paper. Next ask them to write what the weather is like in the northern hemisphere on their birthday. Then have them write what the weather would be like on their birthday in the southern hemisph ...
... of northern and southern hemisphere. After viewing, have the students write their birthdays on a piece of paper. Next ask them to write what the weather is like in the northern hemisphere on their birthday. Then have them write what the weather would be like on their birthday in the southern hemisph ...
Minerals
... the Universe is expanding; Spectral lines shifted toward the red indicate movement away from an object. There is an asteroid belt between Mars and Jupiter. Comets have a highly elliptical orbit. Asteroids and Meteoroids are also out there. ESRT compares luminosity and temperature of stars – note tha ...
... the Universe is expanding; Spectral lines shifted toward the red indicate movement away from an object. There is an asteroid belt between Mars and Jupiter. Comets have a highly elliptical orbit. Asteroids and Meteoroids are also out there. ESRT compares luminosity and temperature of stars – note tha ...
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.