Aula 2: O que é VIDA? - IAG-Usp
... based on liquid water, a suite of so-called “biogenic” elements (most famously carbon), and a usable source of free energy. (Chyba & Hand, 2005, p. 34) ...
... based on liquid water, a suite of so-called “biogenic” elements (most famously carbon), and a usable source of free energy. (Chyba & Hand, 2005, p. 34) ...
The Main Point Comets are
... • Cometary activity is caused by sublimation of ices • The activity appears to be confined to isolated jets on the nucleus • Comet nuclei are very dark, typically reflecting < 4% of the incident sunlight (as dark as a charcoal briquet) • Comet nuclei have very low density (0.1 to 0.25 g/cm3), and th ...
... • Cometary activity is caused by sublimation of ices • The activity appears to be confined to isolated jets on the nucleus • Comet nuclei are very dark, typically reflecting < 4% of the incident sunlight (as dark as a charcoal briquet) • Comet nuclei have very low density (0.1 to 0.25 g/cm3), and th ...
RAL Space brochure - Science and Technology Facilities Council
... RAL Space is an integral part of STFC’s Rutherford Appleton Laboratory. It is a national resource for the benefit of the whole of the UK Space Community, and operates in a similar way to a National Space Laboratory, being science-led, technologyenabled and with many (over 150) collaborations with ac ...
... RAL Space is an integral part of STFC’s Rutherford Appleton Laboratory. It is a national resource for the benefit of the whole of the UK Space Community, and operates in a similar way to a National Space Laboratory, being science-led, technologyenabled and with many (over 150) collaborations with ac ...
A Comment on “The Far Future of Exoplanet Direct Characterization
... planets will be obtained by these techniques. One only has to look at the range of spacecraft-borne instrumentation being planned for astrobiological investigations of Mars (e.g., Parnell et al., 2007; Bada et al., 2008; Coleman and Grunthaner, 2008, and references therein) and compare them with wha ...
... planets will be obtained by these techniques. One only has to look at the range of spacecraft-borne instrumentation being planned for astrobiological investigations of Mars (e.g., Parnell et al., 2007; Bada et al., 2008; Coleman and Grunthaner, 2008, and references therein) and compare them with wha ...
The Reception of the Copernican Revolution
... calculation of celestial ephemerides. This could be seen in the Prutenic Tables, calculated by Eramus Reinhold using the heliocentric model and published in 1551. These proved slightly superior to the Alphonsine Tables of 1483, which were calculated using Ptolemy’s geocentric model. This general sen ...
... calculation of celestial ephemerides. This could be seen in the Prutenic Tables, calculated by Eramus Reinhold using the heliocentric model and published in 1551. These proved slightly superior to the Alphonsine Tables of 1483, which were calculated using Ptolemy’s geocentric model. This general sen ...
R585 EXPLORERS OF THE SOUTHERN SKY
... 527 - history of astronomy This well-illustrated volume is the most conprehensive account of Australian astronomy to date. It is both an indispensabel reference book on the history of astronomy in Australia and a highly readable study of a scientific discipline in the context of emerging nationhood. ...
... 527 - history of astronomy This well-illustrated volume is the most conprehensive account of Australian astronomy to date. It is both an indispensabel reference book on the history of astronomy in Australia and a highly readable study of a scientific discipline in the context of emerging nationhood. ...
Introduction to Planetary Science
... available to us at the present time. Accordingly, we emphasize the importance of the scientific method in the exploration of the solar system. In addition, we demonstrate the consistency of the physical and chemical properties of the planets and their satellites with the current theory of the origin ...
... available to us at the present time. Accordingly, we emphasize the importance of the scientific method in the exploration of the solar system. In addition, we demonstrate the consistency of the physical and chemical properties of the planets and their satellites with the current theory of the origin ...
Which planet has never been orbited or flown past by a
... • Good colors. Not too complicated looking. Stars have a variety of obvious differences. Plus globular clusters might come in handy later this semester. Sure…I’ll start with this one, but how? Dr. C. Renee James NASA Top Stars 2010 ...
... • Good colors. Not too complicated looking. Stars have a variety of obvious differences. Plus globular clusters might come in handy later this semester. Sure…I’ll start with this one, but how? Dr. C. Renee James NASA Top Stars 2010 ...
Issue #15 - 2016 April - National Space Society
... Russian-made RD-180 rocket engines. The United States currently relies on the Atlas V rocket powered by Russia's RD-180 engine for its national defense space launches. In 2014, Congress paseed a law requiring the Pentagon to cut its reliance on the RD-180 after the downturn in US-Russia relations.US ...
... Russian-made RD-180 rocket engines. The United States currently relies on the Atlas V rocket powered by Russia's RD-180 engine for its national defense space launches. In 2014, Congress paseed a law requiring the Pentagon to cut its reliance on the RD-180 after the downturn in US-Russia relations.US ...
gerard peter kuiper - National Academy of Sciences
... included in his observing program a spectroscopic study of the major planets, the Galilean satellites of Jupiter, Triton, and four of Saturn's satellites, including Titan. He found the 6,190-angstrom band of methane in Titan, the first detection of an atmosphere on a satellite. In 1944 he wrote, "It ...
... included in his observing program a spectroscopic study of the major planets, the Galilean satellites of Jupiter, Triton, and four of Saturn's satellites, including Titan. He found the 6,190-angstrom band of methane in Titan, the first detection of an atmosphere on a satellite. In 1944 he wrote, "It ...
Radial Velocity - Yale Exoplanet
... to a few Earth masses close to the habitable zone of their parent star. They will also be used to provide the necessary follow-up observations of transiting candidates detected by space missions. Finally, we also note alternative radial velocity techniques that may play an important role in the futu ...
... to a few Earth masses close to the habitable zone of their parent star. They will also be used to provide the necessary follow-up observations of transiting candidates detected by space missions. Finally, we also note alternative radial velocity techniques that may play an important role in the futu ...
Photometry`s bright future: Detecting Solar System analogues with
... & Winn (2009) is being used, e.g. by Huber et al. (2013b) in their analysis of spin-orbit misalignment in the multiplanet system Kepler-56, or by Barclay et al. (2015) in their confirmation of Kepler-91 being a “giant planet orbiting a giant star”. Using wavelets, the noise is modeled by the sum of ...
... & Winn (2009) is being used, e.g. by Huber et al. (2013b) in their analysis of spin-orbit misalignment in the multiplanet system Kepler-56, or by Barclay et al. (2015) in their confirmation of Kepler-91 being a “giant planet orbiting a giant star”. Using wavelets, the noise is modeled by the sum of ...
Mathematica - Press Center
... Track of Mir Space Station flying overhead. It takes about 10 minutes for Mir to pass from the southwest horizon over the zenith and down into the northeast horizon. ...
... Track of Mir Space Station flying overhead. It takes about 10 minutes for Mir to pass from the southwest horizon over the zenith and down into the northeast horizon. ...
Neptune, Pluto and Quaoar
... The dark spot may be a zone of clear gas that is a window to a cloud deck lower in the atmosphere. Planetary scientists can’t say how long this new spot will last. But the high resolution of the Hubble telescope will allow astronomers to follow the spot's evolution and continued development. ...
... The dark spot may be a zone of clear gas that is a window to a cloud deck lower in the atmosphere. Planetary scientists can’t say how long this new spot will last. But the high resolution of the Hubble telescope will allow astronomers to follow the spot's evolution and continued development. ...
Dynamical evolution of planetary systems
... ejections have sculpted the structure of planetary systems since the formation of the planets; some of these processes might also have played a crucial role in the accretion of the planets themselves. The observational evidence that planetary systems can be very different from each other, suggests t ...
... ejections have sculpted the structure of planetary systems since the formation of the planets; some of these processes might also have played a crucial role in the accretion of the planets themselves. The observational evidence that planetary systems can be very different from each other, suggests t ...
Asteroids in retrograde resonance with Jupiter
... 1 I N T RO D U C T I O N The discovery of exoplanets that revolve around their host stars in the opposite direction to stellar rotation has renewed interest in the dynamics of retrograde motion in N-body gravitational systems. In the Solar system, all major and most minor planets have prograde orbit ...
... 1 I N T RO D U C T I O N The discovery of exoplanets that revolve around their host stars in the opposite direction to stellar rotation has renewed interest in the dynamics of retrograde motion in N-body gravitational systems. In the Solar system, all major and most minor planets have prograde orbit ...
Behaviour of elements from lithium to europium in stars with and
... We conducted an analysis of the distribution of elements from lithium to europium in 200 dwarfs in the solar neighbourhood (∼20 pc) with temperatures in the range 4800–6200 K and metallicities [Fe/H] higher than –0.5 dex. Determinations of atmospheric parameters and the chemical compositions of the ...
... We conducted an analysis of the distribution of elements from lithium to europium in 200 dwarfs in the solar neighbourhood (∼20 pc) with temperatures in the range 4800–6200 K and metallicities [Fe/H] higher than –0.5 dex. Determinations of atmospheric parameters and the chemical compositions of the ...
Autumn 2016 Midterm Review - Autumn 2015 Questions
... 22. We have learned that nuclear fusion - the proton-proton chain - is occurring in the deepest part, the very core, of the Sun. What does this have to do with us? a. The gamma rays being produced provide the radiative support for the Sun. b. Eventually that energy gets transferred through the Sun a ...
... 22. We have learned that nuclear fusion - the proton-proton chain - is occurring in the deepest part, the very core, of the Sun. What does this have to do with us? a. The gamma rays being produced provide the radiative support for the Sun. b. Eventually that energy gets transferred through the Sun a ...
lecture outlines
... Hypothesis, Kapteyn, Kapteyn Universe, selected areas FURTHER STUDIES: 7. The Kapteyn universe: selected areas and photography ...
... Hypothesis, Kapteyn, Kapteyn Universe, selected areas FURTHER STUDIES: 7. The Kapteyn universe: selected areas and photography ...
Sun, Earth, Moon Astronomy 1 — Elementary Astronomy LA Mission College Spring F2015
... really refer to increased brightness ...
... really refer to increased brightness ...
Tellurium N
... When we put the point of the red monthindicator on April, then the shadow is as long as the figure. The sun moves until June 21 towards its highest position. After that, in August, they are again on an equal level. We check it by putting the point of the red monthindicator on August. About the quest ...
... When we put the point of the red monthindicator on April, then the shadow is as long as the figure. The sun moves until June 21 towards its highest position. After that, in August, they are again on an equal level. We check it by putting the point of the red monthindicator on August. About the quest ...
1. Uranus and Neptune
... Neptune, on the other hand, had been discovered in 1846, and it took 165 years to go around the Sun. By 1900 Neptune had gone only one-third the way around the Sun. For that reason it was safer to rely on the smaller errors in Uranus’s motion, rather than on what might eventually turn out to be larg ...
... Neptune, on the other hand, had been discovered in 1846, and it took 165 years to go around the Sun. By 1900 Neptune had gone only one-third the way around the Sun. For that reason it was safer to rely on the smaller errors in Uranus’s motion, rather than on what might eventually turn out to be larg ...
Synthesis of Complex Organic Molecules
... About 100 seconds after the Big Bang, protons, neutrons and electrons existed in photon radiation at a temperature of about of about 109 K. Hydrogen, deuterium and helium could then form. Besides H and He, the only other element that could form via collisions during this nucleosynthesis epoch was li ...
... About 100 seconds after the Big Bang, protons, neutrons and electrons existed in photon radiation at a temperature of about of about 109 K. Hydrogen, deuterium and helium could then form. Besides H and He, the only other element that could form via collisions during this nucleosynthesis epoch was li ...
1 Astrobiologically Interesting Stars within 10
... may have outlasted their usefulness as abodes of life, if the luminosity increase sustained from zero age to their present evolutionary status surpasses the capability of the planetary thermo-regulating carbonate-silicate cycle. This situation is dependent upon planetary location inside the CHZ, yet ...
... may have outlasted their usefulness as abodes of life, if the luminosity increase sustained from zero age to their present evolutionary status surpasses the capability of the planetary thermo-regulating carbonate-silicate cycle. This situation is dependent upon planetary location inside the CHZ, yet ...
Venus pp Notes
... • The surface of Venus seems to be relatively young • Not sure is volcanic activity resurfaces the planet rapidly or not. • No Volcano has been actually detected erupting but,,, ...
... • The surface of Venus seems to be relatively young • Not sure is volcanic activity resurfaces the planet rapidly or not. • No Volcano has been actually detected erupting but,,, ...
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.