Integrative Studies 410 Our Place in the Universe
... when and for how long in the Hertzsprung-Russell ...
... when and for how long in the Hertzsprung-Russell ...
Our Solar System Study Guide 4 grade standard to be tested: S4E2
... These changes are caused by the way sunlight strikes the Moon as it revolves around Earth. The different ways the Moon looks throughout the month are called the phases of the Moon. The diagram below shows the Moon’s position at each phase. ...
... These changes are caused by the way sunlight strikes the Moon as it revolves around Earth. The different ways the Moon looks throughout the month are called the phases of the Moon. The diagram below shows the Moon’s position at each phase. ...
Solar System Book solarsystem3
... Key elements Used in This Book The Big Idea: Learning about our solar system can give students a sense of wonder and perspective. They can ponder and appreciate Earth’s crucial position in our solar system, which makes this planet such an ideal place for us to live. Students may also consider how s ...
... Key elements Used in This Book The Big Idea: Learning about our solar system can give students a sense of wonder and perspective. They can ponder and appreciate Earth’s crucial position in our solar system, which makes this planet such an ideal place for us to live. Students may also consider how s ...
Star Properties and Stellar Evolution
... Stars are classified using surface temperature and absolute magnitude. ...
... Stars are classified using surface temperature and absolute magnitude. ...
Ch. 5 The Universe and Solar System
... • The Sun is a stable, average size yellow star in the main sequence. • Has a surface temperature of 5500°C. • Largest object in our solar system—a million Earths could fit inside it. • Light takes 8 minutes and 20 seconds to reach the Earth. • Much of what we know about the Sun has been learned by ...
... • The Sun is a stable, average size yellow star in the main sequence. • Has a surface temperature of 5500°C. • Largest object in our solar system—a million Earths could fit inside it. • Light takes 8 minutes and 20 seconds to reach the Earth. • Much of what we know about the Sun has been learned by ...
Test#1
... The observed changing positions of the stars during a night is the result of the a) tilt of the Earth's axis , b) rotation of the Earth on its axis c) rotation of the stars on their axes, d) revolution of the Earth around the sun Paris is about 1/4 of the way around Earth from Chicago. On a night wh ...
... The observed changing positions of the stars during a night is the result of the a) tilt of the Earth's axis , b) rotation of the Earth on its axis c) rotation of the stars on their axes, d) revolution of the Earth around the sun Paris is about 1/4 of the way around Earth from Chicago. On a night wh ...
Solutions to problem set 5
... Human body temperature ∼ 100◦ F. Convert F to C: C = (5/9)F − 17.778, so body temperature is 37.778◦ C, or 273 + 37.778 ∼ 310 K. Wien’s Law: λpeak = 3 × 106 K nm/T (proportionality constant can be found in textbook). λpeak = 3 × 106 K nm/310 K = 9680 nm, or 9.68 microns — infrared. Compare to CMBR: ...
... Human body temperature ∼ 100◦ F. Convert F to C: C = (5/9)F − 17.778, so body temperature is 37.778◦ C, or 273 + 37.778 ∼ 310 K. Wien’s Law: λpeak = 3 × 106 K nm/T (proportionality constant can be found in textbook). λpeak = 3 × 106 K nm/310 K = 9680 nm, or 9.68 microns — infrared. Compare to CMBR: ...
A cyclical nature - angielski-teksty - talerz7
... The most noticable feature of our sky is the sun. Its appearance and disappearance each day dictates the design of calendars, rhythms of society and even our biological clocks. During a sunset it appears that sun is moving around the earth - Image: Brit CruiseObservations of the sun have led to many ...
... The most noticable feature of our sky is the sun. Its appearance and disappearance each day dictates the design of calendars, rhythms of society and even our biological clocks. During a sunset it appears that sun is moving around the earth - Image: Brit CruiseObservations of the sun have led to many ...
Stars - Mc Guckin Science
... • Gravity may cause the nebula to contract • Matter in the gas cloud will begin to condense into a dense region called a protostar • The protostar continues to condense, it heats up. Eventually, it reaches a critical mass and nuclear fusion begins. • Begins the main sequence phase of the star • Most ...
... • Gravity may cause the nebula to contract • Matter in the gas cloud will begin to condense into a dense region called a protostar • The protostar continues to condense, it heats up. Eventually, it reaches a critical mass and nuclear fusion begins. • Begins the main sequence phase of the star • Most ...
Title of PAPER - Department of Physics and Astronomy
... Planets in the Solar System are subject to varying levels of radiation from the Sun, depending on their orbital radius. The flux absorbed by a planet may be re-emitted, from the night-side, as the body rotates. Satellites can be located at specific orbits, such as the L1 point where the satellite wi ...
... Planets in the Solar System are subject to varying levels of radiation from the Sun, depending on their orbital radius. The flux absorbed by a planet may be re-emitted, from the night-side, as the body rotates. Satellites can be located at specific orbits, such as the L1 point where the satellite wi ...
Unit XII Study Guide
... b. The normal view; there is always reflected light from the moon’s surface. c. You could not see the sun because Earth blocks its light. d. The light from the sun behind Earth would be blinding. ____ 8. The four terrestrial planets are so called because they a. are the nearest planets to Earth. b. ...
... b. The normal view; there is always reflected light from the moon’s surface. c. You could not see the sun because Earth blocks its light. d. The light from the sun behind Earth would be blinding. ____ 8. The four terrestrial planets are so called because they a. are the nearest planets to Earth. b. ...
Page R63 - ClassZone
... plotted according to brightness and surface temperature. Most stars fall within a diagonal band called the main sequence. In the mainsequence stage of a star’s life cycle, brightness is closely related to surface temperature. Red giant and red supergiant stars appear above the main sequence on the d ...
... plotted according to brightness and surface temperature. Most stars fall within a diagonal band called the main sequence. In the mainsequence stage of a star’s life cycle, brightness is closely related to surface temperature. Red giant and red supergiant stars appear above the main sequence on the d ...
PHYSICS 1500 - The University of Sydney
... (b) Despite having a molten core, Venus does not support a significant magnetic field. Describe the most probable physical cause for this dramatic difference between Venus and Earth. (c) ...
... (b) Despite having a molten core, Venus does not support a significant magnetic field. Describe the most probable physical cause for this dramatic difference between Venus and Earth. (c) ...
Early Astronomy and Gravity
... From Ptolemy to Copernicus • Ptolemy’s geocentric system was very complicated, but also very accurate. It lasted for nearly 1500 years! • But most people still thought that the “perfect reality” was a bunch of “nested spheres” as Aristotle originally suggested. • Copernicus wrote about heliocentric ...
... From Ptolemy to Copernicus • Ptolemy’s geocentric system was very complicated, but also very accurate. It lasted for nearly 1500 years! • But most people still thought that the “perfect reality” was a bunch of “nested spheres” as Aristotle originally suggested. • Copernicus wrote about heliocentric ...
Script - ESA/Hubble
... …while the smallest stars burn slowly enough to be virtually immortal: their expected lifespan is much longer than the present age of the Universe, meaning we’ve never seen one die. [Narrator] ...
... …while the smallest stars burn slowly enough to be virtually immortal: their expected lifespan is much longer than the present age of the Universe, meaning we’ve never seen one die. [Narrator] ...
Solar System
... reasons for your choice. Some criteria you should consider are: closeness to earth, surface (gas, liquid, or rock; stable or volatile), temperature ranges, atmosphere (amount and type), existence of water or other useful materials. ...
... reasons for your choice. Some criteria you should consider are: closeness to earth, surface (gas, liquid, or rock; stable or volatile), temperature ranges, atmosphere (amount and type), existence of water or other useful materials. ...
- BIO Web of Conferences
... performed using remote sensing observations, nor with the in-situ instruments presently available on planetary landers or rovers. Another diagnostic can be used for (exo)planetary exploration: the measurement of isotopic ratios. In the case of carbon, the 12C/13C ratio can bring information about th ...
... performed using remote sensing observations, nor with the in-situ instruments presently available on planetary landers or rovers. Another diagnostic can be used for (exo)planetary exploration: the measurement of isotopic ratios. In the case of carbon, the 12C/13C ratio can bring information about th ...
Extra-Solar Life: Habitable Zones
... • If planet is close in, orbit will be unstable and chaotic • Moving in/out of HZ is probably hard on life development • If planet is far away (orbiting BOTH stars), orbit is stable, but typically outside the HZ (!) ...
... • If planet is close in, orbit will be unstable and chaotic • Moving in/out of HZ is probably hard on life development • If planet is far away (orbiting BOTH stars), orbit is stable, but typically outside the HZ (!) ...
Linking Asteroids and Meteorites through Reflectance
... • 90% of classified stars are on main sequence • Main sequence stars are “young” stars • If a star is leaving the main sequence, it is at the end of its lifespan of burning hydrogen into helium ...
... • 90% of classified stars are on main sequence • Main sequence stars are “young” stars • If a star is leaving the main sequence, it is at the end of its lifespan of burning hydrogen into helium ...
document
... The Discovery of a Nova A nova, a star’s death, was witnessed in the constellation of Cassiopeia in 1572. Tycho observed the star from different locales on Earth. Discovered that the stars did not change position depending the location on Earth. Result: Stars too far away for stellar ...
... The Discovery of a Nova A nova, a star’s death, was witnessed in the constellation of Cassiopeia in 1572. Tycho observed the star from different locales on Earth. Discovered that the stars did not change position depending the location on Earth. Result: Stars too far away for stellar ...
What is Pluto?
... What is Pluto? • Strange object; located far out from the Sun with gas giants but small size and very elliptical and highly inclined orbit • Pluto is a mixture of ices and rocks • composition similar to satellites of giant planets • Could be captured Kuiper Belt Object (e.g. comet)? ...
... What is Pluto? • Strange object; located far out from the Sun with gas giants but small size and very elliptical and highly inclined orbit • Pluto is a mixture of ices and rocks • composition similar to satellites of giant planets • Could be captured Kuiper Belt Object (e.g. comet)? ...
section 4 powerpoint
... The importance of Kepler’s 3rd Law is that, as shown by Newton, the constant of proportionality for a3 = P2 contains two constants, π (pi) and G (the gravitational constant), plus the sum of the masses of the two coorbiting bodies. If one can determine orbital periods P and semi-major axes a, then ...
... The importance of Kepler’s 3rd Law is that, as shown by Newton, the constant of proportionality for a3 = P2 contains two constants, π (pi) and G (the gravitational constant), plus the sum of the masses of the two coorbiting bodies. If one can determine orbital periods P and semi-major axes a, then ...
Lecture 3
... • Sun plus 8 (or 9 with Pluto) planets many of which have moons • plus “debris”: comets, asteroids, meteors, etc • We’ll go over historical understanding of motion (which is “complicated” when viewed from the Earth) and later look at Solar System formation, planetary atmospheres, and planets discove ...
... • Sun plus 8 (or 9 with Pluto) planets many of which have moons • plus “debris”: comets, asteroids, meteors, etc • We’ll go over historical understanding of motion (which is “complicated” when viewed from the Earth) and later look at Solar System formation, planetary atmospheres, and planets discove ...
Lecture 9
... • Each difference of five magnitudes represents a factor of 100 in brightness • A few objects have magnitudes less than 1 • Absolute magnitude describes stellar luminosities – Its what the stars apparent magnitude would be if it were 10 parsecs away ...
... • Each difference of five magnitudes represents a factor of 100 in brightness • A few objects have magnitudes less than 1 • Absolute magnitude describes stellar luminosities – Its what the stars apparent magnitude would be if it were 10 parsecs away ...
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.