Observing the Sky
... stones are positioned such that they would have lined up with the sun during the summer solstice 6,000 years ago. The summer solstice occurs on the longest day of the year. Artifacts found at the site near Nabta suggest that it was, created by African cattle herders. ...
... stones are positioned such that they would have lined up with the sun during the summer solstice 6,000 years ago. The summer solstice occurs on the longest day of the year. Artifacts found at the site near Nabta suggest that it was, created by African cattle herders. ...
here
... • The composition of the giant planets, especially Jupiter, is close to that of the Sun. • The internal structures of these planets is completely different from that of the Earth. In particular, there is no hard surface. • These planets are relatively far from the Sun (more than 5 times the Earth-Su ...
... • The composition of the giant planets, especially Jupiter, is close to that of the Sun. • The internal structures of these planets is completely different from that of the Earth. In particular, there is no hard surface. • These planets are relatively far from the Sun (more than 5 times the Earth-Su ...
Earth Science
... b) superposition, cross-cutting relationships, index fossils, and radioactive decay are methods of dating bodies of rock; c) absolute and relative dating have different applications but can be used together to determine the age of rocks and structures; and d) rocks and fossils from many different ge ...
... b) superposition, cross-cutting relationships, index fossils, and radioactive decay are methods of dating bodies of rock; c) absolute and relative dating have different applications but can be used together to determine the age of rocks and structures; and d) rocks and fossils from many different ge ...
Question paper - Unit 5 (6PH05) - January 2012
... D The number of molecules in the gas doesn’t change. (Total for Question 8 = 1 mark) 9 In many ways electrical and gravitational forces are similar. One key difference is that only A electrical forces can be attractive and repulsive. B electrical forces have an infinite range. C gravitational forces ...
... D The number of molecules in the gas doesn’t change. (Total for Question 8 = 1 mark) 9 In many ways electrical and gravitational forces are similar. One key difference is that only A electrical forces can be attractive and repulsive. B electrical forces have an infinite range. C gravitational forces ...
Cosmic Distance Ladder
... Note that beyond the Virgo cluster, even very bright stars like Cepheids become unresolved and we see only the integrated light from galaxies. Further away than this, we must determine distances using the redshift of galaxies. ...
... Note that beyond the Virgo cluster, even very bright stars like Cepheids become unresolved and we see only the integrated light from galaxies. Further away than this, we must determine distances using the redshift of galaxies. ...
CAREERS IN ASTRONOMY: GRADUATE SCHOOL AND TEACHING
... called Astrochemistry. These substances are usually found in molecular clouds, although they may also appear in low temperature stars, brown dwarfs and planets. ...
... called Astrochemistry. These substances are usually found in molecular clouds, although they may also appear in low temperature stars, brown dwarfs and planets. ...
HW attached
... 5 All objects are attracted to each other, so why are some attractions stronger than others? For example, Earth’s gravity has a more powerful effect on you than the Sun’s gravity. With the Sun’s gravitational attraction holding all of the objects in the solar system, how could this be possible? The ...
... 5 All objects are attracted to each other, so why are some attractions stronger than others? For example, Earth’s gravity has a more powerful effect on you than the Sun’s gravity. With the Sun’s gravitational attraction holding all of the objects in the solar system, how could this be possible? The ...
Body-Earth-Metaphor-2014
... Living things are part of the system too. For example, ocean plankton absorbs carbon dioxide from the air to make their shells; after death their bodies sink to the seabed, where that carbon is locked up for millennia in layers of sediment that are slowly compressed to make limestone. Humans are no ...
... Living things are part of the system too. For example, ocean plankton absorbs carbon dioxide from the air to make their shells; after death their bodies sink to the seabed, where that carbon is locked up for millennia in layers of sediment that are slowly compressed to make limestone. Humans are no ...
HERE - Dundee Astronomical Society
... NGC 1535 is a small blue-gray planetary nebula with a magnitude of +9 - +10 and should be visible in small amateur telescopes, with a disk visible in large amateur instruments. It is also known as Cleopatra’s Eye. ...
... NGC 1535 is a small blue-gray planetary nebula with a magnitude of +9 - +10 and should be visible in small amateur telescopes, with a disk visible in large amateur instruments. It is also known as Cleopatra’s Eye. ...
Earth Science Final Exam Study Guide 2014
... 3. Why is Pluto now considered a dwarf planet? It crosses paths with Neptune. 4. Why is Venus considered Earth’s twin? (pg 590-591) It is about the same size. 5. Give one unique characteristic of each planet (pg 588-598) Mercury- Cratered like our moon Venus-hottest planet because of the extreme gre ...
... 3. Why is Pluto now considered a dwarf planet? It crosses paths with Neptune. 4. Why is Venus considered Earth’s twin? (pg 590-591) It is about the same size. 5. Give one unique characteristic of each planet (pg 588-598) Mercury- Cratered like our moon Venus-hottest planet because of the extreme gre ...
Chapter 3 The Science of Astronomy
... Overcoming the third objection (parallax): • Tycho thought he had measured stellar distances, so lack of parallax seemed to rule out an orbiting Earth. • Galileo showed stars must be much farther than Tycho thought — in part by using his telescope to see the Milky Way is countless individual stars. ...
... Overcoming the third objection (parallax): • Tycho thought he had measured stellar distances, so lack of parallax seemed to rule out an orbiting Earth. • Galileo showed stars must be much farther than Tycho thought — in part by using his telescope to see the Milky Way is countless individual stars. ...
Chapter 3 The Science of Astronomy In what ways do all humans
... made of planetary positions. • Still could not detect stellar parallax, and thus still thought Earth must be at center of solar system (but recognized that other planets go around Sun) • Hired Kepler, who used Tycho’s observations to discover the truth about planetary motion. ...
... made of planetary positions. • Still could not detect stellar parallax, and thus still thought Earth must be at center of solar system (but recognized that other planets go around Sun) • Hired Kepler, who used Tycho’s observations to discover the truth about planetary motion. ...
Cosmic Distance Ladder
... Note that beyond the Virgo cluster, even very bright stars like Cepheids become unresolved and we see only the integrated light from galaxies. Further away than this, we must determine distances using the redshift of galaxies. ...
... Note that beyond the Virgo cluster, even very bright stars like Cepheids become unresolved and we see only the integrated light from galaxies. Further away than this, we must determine distances using the redshift of galaxies. ...
conjunction and opposition
... Superior conjunctions are when the planet is on the far side of the Sun from the Earth. Looking across the distance of the majority of an orbit, a planet will look small at times close to conjunction, when the planet is on the far side of the Sun. Inferior conjunctions can only occur with the inferi ...
... Superior conjunctions are when the planet is on the far side of the Sun from the Earth. Looking across the distance of the majority of an orbit, a planet will look small at times close to conjunction, when the planet is on the far side of the Sun. Inferior conjunctions can only occur with the inferi ...
Studying Space Section 2
... • Using the sun as the basis for measuring time, we define noon as the time when the sun is highest in the sky. ...
... • Using the sun as the basis for measuring time, we define noon as the time when the sun is highest in the sky. ...
The universe and our planet
... of internal heat. It is the largest planet in the solar system. Its diameter is 2.5 times the diameter of the Earth. The Great Red Spot is a giant storm. ...
... of internal heat. It is the largest planet in the solar system. Its diameter is 2.5 times the diameter of the Earth. The Great Red Spot is a giant storm. ...
Why do we weigh more on Earth than on the moon?
... means that your weight would be different on any planet or star. If a person who weighed 150 pounds on Earth stepped onto a neutron star, he would weigh 21 trillion pounds! A neutron star is a star that has about the same mass as our sun, but is much smaller. All of its mass is concentrated into an ...
... means that your weight would be different on any planet or star. If a person who weighed 150 pounds on Earth stepped onto a neutron star, he would weigh 21 trillion pounds! A neutron star is a star that has about the same mass as our sun, but is much smaller. All of its mass is concentrated into an ...
a survey for outer satellites of mars: limits to
... of the giant planets, since they are close to Mars and have nearly zero eccentricity and inclination. Mars’s satellites, from a dynamical perspective, appear to have originated not far from their current positions, because it is hard to produce orbits like those of the known Martian satellites by ca ...
... of the giant planets, since they are close to Mars and have nearly zero eccentricity and inclination. Mars’s satellites, from a dynamical perspective, appear to have originated not far from their current positions, because it is hard to produce orbits like those of the known Martian satellites by ca ...
Weather - Great Neck Public Schools
... History of the Earth (centerfold in ESRT and radioactive decay box on front page) 124. Oldest rocks are on the bottom unless, the rocks have been overturned 125. Any event that crosses another layer is younger than it (faults, folds, intrusions) 126. Need to observe contact metamorphism to determine ...
... History of the Earth (centerfold in ESRT and radioactive decay box on front page) 124. Oldest rocks are on the bottom unless, the rocks have been overturned 125. Any event that crosses another layer is younger than it (faults, folds, intrusions) 126. Need to observe contact metamorphism to determine ...
α Cen A + iodine cell spectrum - Department of Physics and Astronomy
... by Guedes et al. for α CenB. All simulations yield 1 to 4 Earth-mass planets of which 42% lie inside the star’s habitable zone (dashed lines). The planetary configuration of the solar system is shown for reference. Starting conditions: N lunar-mass bodies in a disk with 1/a surface density. ...
... by Guedes et al. for α CenB. All simulations yield 1 to 4 Earth-mass planets of which 42% lie inside the star’s habitable zone (dashed lines). The planetary configuration of the solar system is shown for reference. Starting conditions: N lunar-mass bodies in a disk with 1/a surface density. ...
Adrian`s Space news and notes for March `17
... News: NASA's Cassini mission discovered active geysers at the south pole of of Saturn's Moon Enceladus. After several flybys it was determined that an ocean lies beneath its icy surface that has the potential to support life. Facts: Vesta is the second most massive body in the asteroid belt, surpass ...
... News: NASA's Cassini mission discovered active geysers at the south pole of of Saturn's Moon Enceladus. After several flybys it was determined that an ocean lies beneath its icy surface that has the potential to support life. Facts: Vesta is the second most massive body in the asteroid belt, surpass ...
Solar System Formation
... Summary 2 • The giant planets started off with larger cores because they included the more abundant volatile elements • This allowed them to accrete even more gas in what became a runaway process • The terrestrial planets lost any early atmospheres they had accreted because they were molten …. Ener ...
... Summary 2 • The giant planets started off with larger cores because they included the more abundant volatile elements • This allowed them to accrete even more gas in what became a runaway process • The terrestrial planets lost any early atmospheres they had accreted because they were molten …. Ener ...
Planeterella 02 - QUB Astrophysics Research Centre
... Sun-Earth interactions – including aurora – are referred to as space weather, and as with terrestrial weather there are good reasons for us to study it. Auroras often show a ‘curtain’ structure composed of parallel rays, aligned with Earth's magnetic field lines. Massive electrical currents flow alo ...
... Sun-Earth interactions – including aurora – are referred to as space weather, and as with terrestrial weather there are good reasons for us to study it. Auroras often show a ‘curtain’ structure composed of parallel rays, aligned with Earth's magnetic field lines. Massive electrical currents flow alo ...
Astrobiology
Astrobiology is the study of the origin, evolution, distribution, and future of life in the universe: extraterrestrial life and life on Earth. This interdisciplinary field encompasses the search for habitable environments in our Solar System and habitable planets outside our Solar System, the search for evidence of prebiotic chemistry, laboratory and field research into the origins and early evolution of life on Earth, and studies of the potential for life to adapt to challenges on Earth and in outer space. Astrobiology addresses the question of whether life exists beyond Earth, and how humans can detect it if it does. (The term exobiology is similar but more specific—it covers the search for life beyond Earth, and the effects of extraterrestrial environments on living things.)Astrobiology makes use of physics, chemistry, astronomy, biology, molecular biology, ecology, planetary science, geography, and geology to investigate the possibility of life on other worlds and help recognize biospheres that might be different from the biosphere on Earth. The origin and early evolution of life is an inseparable part of the discipline of astrobiology. Astrobiology concerns itself with interpretation of existing scientific data; given more detailed and reliable data from other parts of the universe, the roots of astrobiology itself—physics, chemistry and biology—may have their theoretical bases challenged. Although speculation is entertained to give context, astrobiology concerns itself primarily with hypotheses that fit firmly into existing scientific theories.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. According to research published in August 2015, very large galaxies may be more favorable to the creation and development of habitable planets than smaller galaxies, like the Milky Way galaxy. 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.Current studies on the planet Mars by the Curiosity and Opportunity rovers are now searching for evidence of ancient life as well as plains related to ancient rivers or lakes that may have been habitable. The search for evidence of habitability, taphonomy (related to fossils), and organic molecules on the planet Mars is now a primary NASA objective on Mars.