The Astrobiology Primer
... A star reaches the “main-sequence” when its primary source of energy is thermonuclear fusion in the stellar core. The main sequence is a region in a diagram showing the luminosities (energy emitted by the star per second) of stars as a function of their surface temperature—a Hertzsprung-Russell Diag ...
... A star reaches the “main-sequence” when its primary source of energy is thermonuclear fusion in the stellar core. The main sequence is a region in a diagram showing the luminosities (energy emitted by the star per second) of stars as a function of their surface temperature—a Hertzsprung-Russell Diag ...
The Astrobiology Primer - Mary Ann Liebert, Inc. publishers
... The Astrobiology Primer has been created as a reference tool for those who are interested in the interdisciplinary field of astrobiology. The field incorporates many diverse research endeavors, but it is our hope that this slim volume will present the reader with all he or she needs to know to becom ...
... The Astrobiology Primer has been created as a reference tool for those who are interested in the interdisciplinary field of astrobiology. The field incorporates many diverse research endeavors, but it is our hope that this slim volume will present the reader with all he or she needs to know to becom ...
Atmospheric biomarkers on terrestrial exoplanets Abstract Introduction
... Though some of these planets orbit in the ’habitable zone’ of their parent star, living species are not expected on such giant planets. If it were the case, the life forms would be so different from what we know that their remote identification would be extremely unlikely. It should however been not ...
... Though some of these planets orbit in the ’habitable zone’ of their parent star, living species are not expected on such giant planets. If it were the case, the life forms would be so different from what we know that their remote identification would be extremely unlikely. It should however been not ...
New Light on the Solar System
... ethereal rings around the gas giants. Jupiter’s satellite Europa has icy niches where life might evolve. (As this issue goes to press, astronomers are remarking that as Pluto’s orbit carries it farther from the sun, the planet’s atmosphere is curiously warming up.) Though astronomers have begun to d ...
... ethereal rings around the gas giants. Jupiter’s satellite Europa has icy niches where life might evolve. (As this issue goes to press, astronomers are remarking that as Pluto’s orbit carries it farther from the sun, the planet’s atmosphere is curiously warming up.) Though astronomers have begun to d ...
Million years - The Origin Of Life
... The objective of this essay is to test current views of the age of the solar system against the observed degree of locking versus the predicted degree of locking. Tidal locking in the inner five planets [Mercury, Venus, Earth, Mars and Jupiter] is strong evidence for a recent creation of the Solar S ...
... The objective of this essay is to test current views of the age of the solar system against the observed degree of locking versus the predicted degree of locking. Tidal locking in the inner five planets [Mercury, Venus, Earth, Mars and Jupiter] is strong evidence for a recent creation of the Solar S ...
If you weighed 100 lbs on Earth, you would weigh 38 pounds on
... Even though both loaves are of the same amount, the smashed bread is *denser* because it is more compact. The Earth is 4.5 to 4.6 billion years old, but the oldest known rocks are less than 4 billion years old. Rocks older than 3 billion years are rare. The oldest fossils of living organisms are les ...
... Even though both loaves are of the same amount, the smashed bread is *denser* because it is more compact. The Earth is 4.5 to 4.6 billion years old, but the oldest known rocks are less than 4 billion years old. Rocks older than 3 billion years are rare. The oldest fossils of living organisms are les ...
Possible climates on terrestrial exoplanets
... and their associated timescales separately. Nebular gas and protoatmospheres When a dense, cold molecular cloud gravitationally collapses to form a protostar, conservation of angular momentum forces a fraction of the gas to remain in an extended disk where planets can form. This gas is mainly compos ...
... and their associated timescales separately. Nebular gas and protoatmospheres When a dense, cold molecular cloud gravitationally collapses to form a protostar, conservation of angular momentum forces a fraction of the gas to remain in an extended disk where planets can form. This gas is mainly compos ...
The Solar System - Gordon College English Center
... Jupiter is the “giant” of the solar system. It is 11 times bigger in diameter than Earth and it is 1300 times bigger in its volume than Earth. Its mass is 2.5 bigger than the mass of all the other planets of the solar system combined together. It is a completely different world than Earth. It is a w ...
... Jupiter is the “giant” of the solar system. It is 11 times bigger in diameter than Earth and it is 1300 times bigger in its volume than Earth. Its mass is 2.5 bigger than the mass of all the other planets of the solar system combined together. It is a completely different world than Earth. It is a w ...
Pathways to Astronomy/Space
... 1857 – Sputnik, first artificial satellite, launched into space (by U.S.S.R.). 1961 – First human, Yuri Gagarin, launched into space (by U.S.S.R.). 1971 – First space station, Salyut 1, launched into space (by U.S.S.R.). ...
... 1857 – Sputnik, first artificial satellite, launched into space (by U.S.S.R.). 1961 – First human, Yuri Gagarin, launched into space (by U.S.S.R.). 1971 – First space station, Salyut 1, launched into space (by U.S.S.R.). ...
Proposal submitted to ISSI
... exoplanetary atmospheres. The task proposed here was never attempted before. The results of our project are important for discovery missions such as CoRoT, which may detect remnants of “Hot Jupiters”, “Hot Neptunes”, and Super Earths”, and Kepler and SIM, hunting for Earth-sized planets. Moreover th ...
... exoplanetary atmospheres. The task proposed here was never attempted before. The results of our project are important for discovery missions such as CoRoT, which may detect remnants of “Hot Jupiters”, “Hot Neptunes”, and Super Earths”, and Kepler and SIM, hunting for Earth-sized planets. Moreover th ...
Habitability: Good, Bad and the Ugly
... – Several stars in our galaxy with planets the size of Jupiter within terrestrial zone from their sun – Mass of star • Larger mass, greater luminosity, shorter life • Most abundant stars in galaxy are least luminous and longest-lived (M-dwarfs) ...
... – Several stars in our galaxy with planets the size of Jupiter within terrestrial zone from their sun – Mass of star • Larger mass, greater luminosity, shorter life • Most abundant stars in galaxy are least luminous and longest-lived (M-dwarfs) ...
The Crux of Cydonia
... In order to be able to begin to comprehend how deep this rabbit hole goes, one must first be willing to consider at least six impossible things before breakfast. 1. We are not alone nor are we the most intelligent species in the universe. 2. Cydonia may not be in ruin at all. It may have been constr ...
... In order to be able to begin to comprehend how deep this rabbit hole goes, one must first be willing to consider at least six impossible things before breakfast. 1. We are not alone nor are we the most intelligent species in the universe. 2. Cydonia may not be in ruin at all. It may have been constr ...
or view
... vertical column of ozone, which is itself controlled by H2O, according to present photochemistry models. These models also predict the presence of O, H2O2, HO2, OH molecules and radicals, which are extremely reactive with the surface. Together with ozone, they are the main factors destroying any org ...
... vertical column of ozone, which is itself controlled by H2O, according to present photochemistry models. These models also predict the presence of O, H2O2, HO2, OH molecules and radicals, which are extremely reactive with the surface. Together with ozone, they are the main factors destroying any org ...
June, 2001 AAS poster - David P. Bennett
... The VISTA telescope has recently been funded by the UK for construction in Paranal, the site of the VLT. It is a 4m wide FOV telescope which can image 2.25 square degrees. Based upon estimates of planet detection sensitivity in a 1997 ESO report by Sackett, a single-site microlensing planet search p ...
... The VISTA telescope has recently been funded by the UK for construction in Paranal, the site of the VLT. It is a 4m wide FOV telescope which can image 2.25 square degrees. Based upon estimates of planet detection sensitivity in a 1997 ESO report by Sackett, a single-site microlensing planet search p ...
New Indivisible Planetary Science Paradigm J. Marvin Herndon
... The first hypothesis about the origin of the Sun and the planets was advanced in the latter half of the 18th Century by Immanuel Kant and modified later by Pierre-Simon de Laplace. Early in the 20th Century, Laplace’s nebula hypothesis was replaced with the Chamberlin-Moulton hypothesis which held t ...
... The first hypothesis about the origin of the Sun and the planets was advanced in the latter half of the 18th Century by Immanuel Kant and modified later by Pierre-Simon de Laplace. Early in the 20th Century, Laplace’s nebula hypothesis was replaced with the Chamberlin-Moulton hypothesis which held t ...
Chapter 9 Lecture 1
... • A cheap (but slow) way to acquire moon rocks and Mars rocks. • One Mars meteorite generated a stir when scientists claimed evidence for microscopic life in it. ...
... • A cheap (but slow) way to acquire moon rocks and Mars rocks. • One Mars meteorite generated a stir when scientists claimed evidence for microscopic life in it. ...
Death Mystery Of Subhash Chandra Bose
... Month of Death: Month of death is seen from the transit of Sun is trine to Mrityupad ( Arudh of 8th House ). Here Arudh of 8th falls in Leo, transit Sun (on 18-8-1945 ) was in Leo, aspected by natal Mars and Saturn, forming square aspect with both the planets. Lunar-day ( Tithi ) of Death: The stron ...
... Month of Death: Month of death is seen from the transit of Sun is trine to Mrityupad ( Arudh of 8th House ). Here Arudh of 8th falls in Leo, transit Sun (on 18-8-1945 ) was in Leo, aspected by natal Mars and Saturn, forming square aspect with both the planets. Lunar-day ( Tithi ) of Death: The stron ...
planetary temperatures, albedos, and the greenhouse effect
... EQUIPMENT: Computer with internet connection to the Solar System Collaboratory LENGTH: Two lab periods. The module provides the tools you need to attack one of the grand questions of planetary science. In this case, the grand question of the EARTH/VENUS/MARS module can be phrased in two different bu ...
... EQUIPMENT: Computer with internet connection to the Solar System Collaboratory LENGTH: Two lab periods. The module provides the tools you need to attack one of the grand questions of planetary science. In this case, the grand question of the EARTH/VENUS/MARS module can be phrased in two different bu ...
a geocentric orrery
... an afternoon presentation at the Merrimack Baptist Temple on Saturday, October 21, 2000. As Pastor Norwalt scoured the area for parts and advice, many people became intrigued and wanted to see it work; so many that two sessions were deemed necessary. The first was on Saturday afternoon, the second i ...
... an afternoon presentation at the Merrimack Baptist Temple on Saturday, October 21, 2000. As Pastor Norwalt scoured the area for parts and advice, many people became intrigued and wanted to see it work; so many that two sessions were deemed necessary. The first was on Saturday afternoon, the second i ...
good - Cosmos
... To us, on whom Divine benevolence has bestowed the most diligent of observers, Tycho Brahe, from whose observations this 8-minute error of Ptolemy's in regard to Mars is deduced, it is fitting that we accept with grateful minds this gift from God, and both acknowledge and build upon it. Hence, let u ...
... To us, on whom Divine benevolence has bestowed the most diligent of observers, Tycho Brahe, from whose observations this 8-minute error of Ptolemy's in regard to Mars is deduced, it is fitting that we accept with grateful minds this gift from God, and both acknowledge and build upon it. Hence, let u ...
Assessing the Possibility of Biological Complexity on Other
... the former. As the number of known exoplanets has grown, the need for quantitative measures of their similarity to Earth has become apparent. As one approach to meeting this need, we have proposed an Earth Similarity Index, or ESI, which rates the similarity of extrasolar planets to Earth on the bas ...
... the former. As the number of known exoplanets has grown, the need for quantitative measures of their similarity to Earth has become apparent. As one approach to meeting this need, we have proposed an Earth Similarity Index, or ESI, which rates the similarity of extrasolar planets to Earth on the bas ...
PDF Full-text
... the former. As the number of known exoplanets has grown, the need for quantitative measures of their similarity to Earth has become apparent. As one approach to meeting this need, we have proposed an Earth Similarity Index, or ESI, which rates the similarity of extrasolar planets to Earth on the bas ...
... the former. As the number of known exoplanets has grown, the need for quantitative measures of their similarity to Earth has become apparent. As one approach to meeting this need, we have proposed an Earth Similarity Index, or ESI, which rates the similarity of extrasolar planets to Earth on the bas ...
J: Chapter 3: The Solar System
... Figure 5A. Venus is sometimes called Earth’s twin because its size and mass are similar to Earth’s. In 1962, Mariner 2 flew within 34,400 km of Venus and sent back information about Venus’s atmosphere and rotation. The former Soviet Union landed the first probe on the surface of Venus in 1970. Vener ...
... Figure 5A. Venus is sometimes called Earth’s twin because its size and mass are similar to Earth’s. In 1962, Mariner 2 flew within 34,400 km of Venus and sent back information about Venus’s atmosphere and rotation. The former Soviet Union landed the first probe on the surface of Venus in 1970. Vener ...
Marsbugs Vol. 11, No. 30
... nation’s first nuclear fission reactor-powered scientific spacecraft. It is part of NASA’s Project Prometheus, the space agency’s endeavor to develop safe nuclear power and high-efficiency electric propulsion to open the solar system. With the planet Jupiter as its backdrop, this artist's rendering ...
... nation’s first nuclear fission reactor-powered scientific spacecraft. It is part of NASA’s Project Prometheus, the space agency’s endeavor to develop safe nuclear power and high-efficiency electric propulsion to open the solar system. With the planet Jupiter as its backdrop, this artist's rendering ...
4 Viable Transfer of Microorganisms in the Solar System and
... velocity during an impact. It has been shown that bacterial spores as well as cells of Deinococcus radiodurans survived gun shots with accelerations up to 4500 km s-² (460 000 × g) with a rise time of <1 ms, which are equivalent or even higher than the acceleration and jerk values calculated for an ...
... velocity during an impact. It has been shown that bacterial spores as well as cells of Deinococcus radiodurans survived gun shots with accelerations up to 4500 km s-² (460 000 × g) with a rise time of <1 ms, which are equivalent or even higher than the acceleration and jerk values calculated for an ...
Planetary protection
Planetary protection is a guiding principle in the design of an interplanetary mission, aiming to prevent biological contamination of both the target celestial body and the Earth. Planetary protection reflects both the unknown nature of the space environment and the desire of the scientific community to preserve the pristine nature of celestial bodies until they can be studied in detail.There are two types of interplanetary contamination. Forward contamination is the transfer of viable organisms from Earth to another celestial body. A major goal of planetary protection is to preserve the planetary record of natural processes by preventing introduction of Earth-originated life. Back contamination is the transfer of extraterrestrial organisms, if such exist, back to the Earth's biosphere.