Ptolemy, Copernicus - Berry College Professional WordPress Sites
... no set scale for relating the size of one planet’s orbit to another. Even the order of the planets is not determined in the Ptolemaic system. • The model automatically makes a planet brighter when it is in retrograde, because at that time it will be closer to Earth. • Retrograde can be synchronize ...
... no set scale for relating the size of one planet’s orbit to another. Even the order of the planets is not determined in the Ptolemaic system. • The model automatically makes a planet brighter when it is in retrograde, because at that time it will be closer to Earth. • Retrograde can be synchronize ...
Astronomers classify stars according to their physical characteristics
... •A star’s _apparent_ brightness depends upon how bright it _actually is and its _distance_ from Earth. •A star’s actual brightness (or _absolute magnitude) usually depends on the star’s _size_ and temperature__. •Because stars with _more mass ___ have more __self _gravity, they tend to have _higher_ ...
... •A star’s _apparent_ brightness depends upon how bright it _actually is and its _distance_ from Earth. •A star’s actual brightness (or _absolute magnitude) usually depends on the star’s _size_ and temperature__. •Because stars with _more mass ___ have more __self _gravity, they tend to have _higher_ ...
Publication - Centre for Star and Planet Formation
... days. Three transits of the longer-period candidate (hereafter the outer planet) were readily apparent, but those of the shorter-period candidate (hereafter the inner planet) were more difficult to find because of their shallower depth. Using the predictions of a preliminary model of the system as a ...
... days. Three transits of the longer-period candidate (hereafter the outer planet) were readily apparent, but those of the shorter-period candidate (hereafter the inner planet) were more difficult to find because of their shallower depth. Using the predictions of a preliminary model of the system as a ...
Slide 1 - leslie09
... planet in our solar system known to harbor life . Planet in our solar system known to harbor life . Scientists around the world have discovered many things about our planet by working together and sharing their findings. ...
... planet in our solar system known to harbor life . Planet in our solar system known to harbor life . Scientists around the world have discovered many things about our planet by working together and sharing their findings. ...
Atoms (“indivisible”)
... Bohr Model Binding Energy – energy required to keep an electron in its orbit around the nucleus (depends on orbit size) Neils Bohr discovered that electrons need to orbit the nucleus with specific amounts of binding energy ...
... Bohr Model Binding Energy – energy required to keep an electron in its orbit around the nucleus (depends on orbit size) Neils Bohr discovered that electrons need to orbit the nucleus with specific amounts of binding energy ...
ASTR 300 Stars and Stellar Systems Spring 2011
... Barnard’s star is now at 5.9 ly, we would have to move it to 5.9/3.981 = 1.48 ly. Barnard’s star is actually moving towards us at 107 km/s, and in about 10,000 years it will pass within 3.8 ly of us; after that its distance will increase again. When it is 3.8 ly away it will be the nearest star. Wil ...
... Barnard’s star is now at 5.9 ly, we would have to move it to 5.9/3.981 = 1.48 ly. Barnard’s star is actually moving towards us at 107 km/s, and in about 10,000 years it will pass within 3.8 ly of us; after that its distance will increase again. When it is 3.8 ly away it will be the nearest star. Wil ...
Johannes Kepler
... Retrieved from.
"Medieval & Renaissance Astronomy up to Newto ...
... Retrieved from
Digital Moon - Net Start Class
... • Frogs often live in freshwater ponds where they feed on insects and lay their eggs in the water. Sometimes they are eaten by snakes. Frog would leave the area if • A there were more insects. • B the snakes all died out. • C the water in the pond dried up. •D ...
... • Frogs often live in freshwater ponds where they feed on insects and lay their eggs in the water. Sometimes they are eaten by snakes. Frog would leave the area if • A there were more insects. • B the snakes all died out. • C the water in the pond dried up. •D ...
Recap: High Mass Stars
... • Mass of star determines location on main sequence • Ranges in size from ½ Sun to 20 times the Sun’s size • Color depends on the surface temperature ...
... • Mass of star determines location on main sequence • Ranges in size from ½ Sun to 20 times the Sun’s size • Color depends on the surface temperature ...
Earth-like worlds on eccentric orbits - Physics
... substellar objects, even those which turn out to be brown dwarfs, could have solid satellites comparable in size to Mars or even Earth with long-lived atmospheres (Williams et al. 1997). Such colossal moons might form through pairwise accretion of small bodies in a proto-satellite disc, as is though ...
... substellar objects, even those which turn out to be brown dwarfs, could have solid satellites comparable in size to Mars or even Earth with long-lived atmospheres (Williams et al. 1997). Such colossal moons might form through pairwise accretion of small bodies in a proto-satellite disc, as is though ...
Session Two - A Sidewalk Astronomer in Charlottetown
... planet is currently located inside the boundaries of that constellation. ◦ Jupiter, and Saturn are the easiest planets to observe. Mercury is so close to the Sun that it's mostly only visible low in the sky during dusk or dawn. Uranus and Neptune are faint and hard to find for a beginner. Venus and ...
... planet is currently located inside the boundaries of that constellation. ◦ Jupiter, and Saturn are the easiest planets to observe. Mercury is so close to the Sun that it's mostly only visible low in the sky during dusk or dawn. Uranus and Neptune are faint and hard to find for a beginner. Venus and ...
Exam 3
... The rings of all the Jovian planets are found near to the planet, while moons are found farther out. This is because a) moons which are too near the planet will be torn apart by differential gravity forces b) moons too close to the planet will colide with one another and break each other apart c) mo ...
... The rings of all the Jovian planets are found near to the planet, while moons are found farther out. This is because a) moons which are too near the planet will be torn apart by differential gravity forces b) moons too close to the planet will colide with one another and break each other apart c) mo ...
How many moons does Mercury have? (Update)
... answer. But answering it more thoroughly requires that we examine the process through which other planets acquired their moons, and seeing how these apply (or fail to apply) to Mercury. ...
... answer. But answering it more thoroughly requires that we examine the process through which other planets acquired their moons, and seeing how these apply (or fail to apply) to Mercury. ...
where it is, how big it
... studying the way gases behave in a laboratory. Jupiter probably has a core of rocky material amounting to something like 10 to 15 Earth-masses. Above the core lies the main bulk of the planet in the form of liquid metallic hydrogen. This exotic form of the most common of elements is possible only at ...
... studying the way gases behave in a laboratory. Jupiter probably has a core of rocky material amounting to something like 10 to 15 Earth-masses. Above the core lies the main bulk of the planet in the form of liquid metallic hydrogen. This exotic form of the most common of elements is possible only at ...
Unit 6 – Earth
... Material was thrown out as the Universe expanded, and in places came together under the influence of gravity to form galaxies, stars, and planets. There are many thousands of millions of stars. Latest evidence suggests that many have planets. Who knows; there may be life. A star is a ball of mostly ...
... Material was thrown out as the Universe expanded, and in places came together under the influence of gravity to form galaxies, stars, and planets. There are many thousands of millions of stars. Latest evidence suggests that many have planets. Who knows; there may be life. A star is a ball of mostly ...
THE LIFE CYCLE OF A STAR
... a million years before exploding as supernovae. The faintest stars are the red dwarfs, less than onethousandth the brightness of the Sun. The smallest mass possible for a star is about 8% that of the Sun (80 times the mass of the planet Jupiter), otherwise nuclear reactions do not take place. Object ...
... a million years before exploding as supernovae. The faintest stars are the red dwarfs, less than onethousandth the brightness of the Sun. The smallest mass possible for a star is about 8% that of the Sun (80 times the mass of the planet Jupiter), otherwise nuclear reactions do not take place. Object ...
The Solar System and our Universe
... • Scientists believe that the red shift evidence tells us that at some point in time, billions of years ago, all the mater & energy in the Universe was concentrated in the same place. ...
... • Scientists believe that the red shift evidence tells us that at some point in time, billions of years ago, all the mater & energy in the Universe was concentrated in the same place. ...
astronomy ch 2 - Fort Thomas Independent Schools
... If we measure the orbital periods (P) in years and distances (a) in astronomical units, then the law mathematically can be written as P2 = a3. ...
... If we measure the orbital periods (P) in years and distances (a) in astronomical units, then the law mathematically can be written as P2 = a3. ...
Angular Momentum
... Today we can understand the physical reasons for these laws … Let’s remind us first of the geometry of the ellipse and then discuss the three laws. ...
... Today we can understand the physical reasons for these laws … Let’s remind us first of the geometry of the ellipse and then discuss the three laws. ...
Space Study Guide
... As technology increased, scientists made more and more observations that supported the Big Bang Model. 1. In 1929, Edwin Hubble observed that the spectral lines from other galaxies tended to always shift toward the red end of the spectrum. According to the Doppler Effect, causes this change of obser ...
... As technology increased, scientists made more and more observations that supported the Big Bang Model. 1. In 1929, Edwin Hubble observed that the spectral lines from other galaxies tended to always shift toward the red end of the spectrum. According to the Doppler Effect, causes this change of obser ...
A Star is Born worksheet and key
... 10. How is a planetary nebula formed? When the outer layers of the red giant drift into space. 11. For how long do white dwarfs radiate their leftover heat? Billions of years. 12. How long is the life phase of a red supergiant? Millions of years. 13. What’s two differences between red giants and red ...
... 10. How is a planetary nebula formed? When the outer layers of the red giant drift into space. 11. For how long do white dwarfs radiate their leftover heat? Billions of years. 12. How long is the life phase of a red supergiant? Millions of years. 13. What’s two differences between red giants and red ...
Terrestrial Planets
... Because the grains have larger surface area per unit mass compared to larger bodies, they (re)radiate more energy and therefore are more easily detected in the infrared compared to their parent bodies. By studying this signal, we can probe the evolution of other planetary systems through this early, ...
... Because the grains have larger surface area per unit mass compared to larger bodies, they (re)radiate more energy and therefore are more easily detected in the infrared compared to their parent bodies. By studying this signal, we can probe the evolution of other planetary systems through this early, ...
PowerPoint
... …becoming an official Star as its core Nuclear Fusion initiates! With its permanent Main Sequence “status” (position) depending upon its Mass! ...
... …becoming an official Star as its core Nuclear Fusion initiates! With its permanent Main Sequence “status” (position) depending upon its Mass! ...
Sun, Stars, HR Diagram
... A) to expand as a red giant, undergo a nova outburst and end as a white dwarf B) to shrink to a white dwarf then eventually expand to a red giant C) become hotter and expand into a blue supergiant D) to become a black hole 17. By using a spectroscope an astronomer can A) B) C) D) ...
... A) to expand as a red giant, undergo a nova outburst and end as a white dwarf B) to shrink to a white dwarf then eventually expand to a red giant C) become hotter and expand into a blue supergiant D) to become a black hole 17. By using a spectroscope an astronomer can A) B) C) D) ...
Star Jeopardy Review #2
... What is the ejected envelope, often bipolar, of a red giant surrounding a white dwarf ...
... What is the ejected envelope, often bipolar, of a red giant surrounding a white dwarf ...
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.