Getting to Know: Rotation, Orbits, and the Seasons
... away from the Sun. (Image from NASA) means that the heat energy radiated by the Sun is spread over a larger area, resulting in cooler temperatures. This is why there is little seasonal variation at locations near the equator. The Sun shines more directly onto equatorial regions throughout the year. ...
... away from the Sun. (Image from NASA) means that the heat energy radiated by the Sun is spread over a larger area, resulting in cooler temperatures. This is why there is little seasonal variation at locations near the equator. The Sun shines more directly onto equatorial regions throughout the year. ...
Historical View
... The view of the universe thus changed dramatically during the 16th century. • In 1543, De revolutionibus (on the revolutions of heavenly spheres, 코페 르니쿠스 의 "천체 운행") by a Renaissance astronomer Nicholas Copernicus, was published when the author died. In the book, Copernicus offered an alternative mod ...
... The view of the universe thus changed dramatically during the 16th century. • In 1543, De revolutionibus (on the revolutions of heavenly spheres, 코페 르니쿠스 의 "천체 운행") by a Renaissance astronomer Nicholas Copernicus, was published when the author died. In the book, Copernicus offered an alternative mod ...
Advanced Interactive PPT
... Jupiter is the largest planet in our solar system, and the fifth planet from the sun. Jupiter is orbited by 16 moons. A day on Jupiter lasts only about 10 hours, but a year on Jupiter lasts about 12 times longer than on earth. The planet is almost all gases, mostly hydrogen and helium. Winds blow co ...
... Jupiter is the largest planet in our solar system, and the fifth planet from the sun. Jupiter is orbited by 16 moons. A day on Jupiter lasts only about 10 hours, but a year on Jupiter lasts about 12 times longer than on earth. The planet is almost all gases, mostly hydrogen and helium. Winds blow co ...
PHYSICS 111 HOMEWORK SOLUTION #13 May 1, 2013
... Again the same equation applies, knowing the acquired speed we can compute the sufficient distance for the escape: ...
... Again the same equation applies, knowing the acquired speed we can compute the sufficient distance for the escape: ...
Astronomy 212 EXAM 1 2000 September 29 Answer
... 29. Using the above information, when is the first full Moon in 2001? 30. “Superior planets have retrograde motion at opposition.” Define: superior planet, retrograde motion and opposition. 31. What observations supported the following “scientific” theories. (a) The Earth is a sphere. (b) The heave ...
... 29. Using the above information, when is the first full Moon in 2001? 30. “Superior planets have retrograde motion at opposition.” Define: superior planet, retrograde motion and opposition. 31. What observations supported the following “scientific” theories. (a) The Earth is a sphere. (b) The heave ...
Stars
... BLUE, the COLDEST stars are RED. (Note- this is opposite to what we are used to associating with temperature.) • Color is used to determine ages – stages – in life cycle. ...
... BLUE, the COLDEST stars are RED. (Note- this is opposite to what we are used to associating with temperature.) • Color is used to determine ages – stages – in life cycle. ...
Full name - IES Santísima Trinidad
... 1.- RYEUMRC: _ _ _ _ _ _ _ is the first planet in the solar system. It is a small planet. It is the closest to the sun. It hasn’t got moons but it has got many craters. 2.-SVEUN: _ _ _ _ _ is the second planet in the solar system. it is a bright and hot. 3.-THARE: is the planet where we live. It is ...
... 1.- RYEUMRC: _ _ _ _ _ _ _ is the first planet in the solar system. It is a small planet. It is the closest to the sun. It hasn’t got moons but it has got many craters. 2.-SVEUN: _ _ _ _ _ is the second planet in the solar system. it is a bright and hot. 3.-THARE: is the planet where we live. It is ...
Solar Furnaces
... (gravity pulling in is balanced by pressure pushing out). • Energy is lost from the surface, but nuclear reactions provide energy to prevent contraction. • But eventually a helium core builds up to 0.1Msun, and there isn’t enough hydrogen left in the core for appreciable ...
... (gravity pulling in is balanced by pressure pushing out). • Energy is lost from the surface, but nuclear reactions provide energy to prevent contraction. • But eventually a helium core builds up to 0.1Msun, and there isn’t enough hydrogen left in the core for appreciable ...
Some Physics of the Kepler Laws and Orbits Kepler`s First Law
... where L is the angular momentum and v is the radial velocity. As mentioned above, this force is attractive. But why doesn’t the Earth collapse into the Sun as one may wonder. This is due to the angular momentum. What the angular momentum does is it creates a barrier that prevents the Earth from coll ...
... where L is the angular momentum and v is the radial velocity. As mentioned above, this force is attractive. But why doesn’t the Earth collapse into the Sun as one may wonder. This is due to the angular momentum. What the angular momentum does is it creates a barrier that prevents the Earth from coll ...
chapter10
... Degenerate stellar remnant (C,O core) Extremely dense: 1 teaspoon of white dwarf material: mass ≈ 16 tons!!! Chunk of white dwarf material the size of a beach ball would outweigh an ocean liner! ...
... Degenerate stellar remnant (C,O core) Extremely dense: 1 teaspoon of white dwarf material: mass ≈ 16 tons!!! Chunk of white dwarf material the size of a beach ball would outweigh an ocean liner! ...
Power Point Presentation
... Its atmosphere is very hot (1100oC) since it is only 6.4 million km from the star When the planet passed in front of the star, the star’s light passed through the planet’s atmosphere and sodium was observed by HST ...
... Its atmosphere is very hot (1100oC) since it is only 6.4 million km from the star When the planet passed in front of the star, the star’s light passed through the planet’s atmosphere and sodium was observed by HST ...
planet
... Earth. Move it to Pluto’s orbit, and it will be instantly disqualified as a planet.” (Allan Stern) • What does clear the neighborhood really mean? – Earth, Mars, Jupiter and Neptune all have asteroids as neighbors (in similar orbits) ...
... Earth. Move it to Pluto’s orbit, and it will be instantly disqualified as a planet.” (Allan Stern) • What does clear the neighborhood really mean? – Earth, Mars, Jupiter and Neptune all have asteroids as neighbors (in similar orbits) ...
Powerpoint - BU Imaging Science
... • He liked the simple explanation of retrograde motion offered by the Sun-centred model • He also used a Sun-centred model to relate the known periods of the planets to their relative distances from the Sun, something not possible with the Ptolemy model • But how could you test these predicted dista ...
... • He liked the simple explanation of retrograde motion offered by the Sun-centred model • He also used a Sun-centred model to relate the known periods of the planets to their relative distances from the Sun, something not possible with the Ptolemy model • But how could you test these predicted dista ...
New Worlds - Universiteit Leiden
... The discs around young stars where planets are formed were first imaged around 15 years ago, roughly at the same time as the first exoplanets were discovered. It took so long because these discs are much smaller and less massive than the clouds from which the stars are formed, and they can easily be ...
... The discs around young stars where planets are formed were first imaged around 15 years ago, roughly at the same time as the first exoplanets were discovered. It took so long because these discs are much smaller and less massive than the clouds from which the stars are formed, and they can easily be ...
In the beginning… Astronomical Observations of Star Formation
... rich in volatiles (C and N) compared to the Earth. ...
... rich in volatiles (C and N) compared to the Earth. ...
Stellar evolution, II
... into helium, the matter in the core becomes degenerate. In a low density gas many possible energy levels of the electrons are open, but as the gas become denser all the lower energy levels are filled. The Pauli exclusion principle states that each energy level can only contain one spin up electron a ...
... into helium, the matter in the core becomes degenerate. In a low density gas many possible energy levels of the electrons are open, but as the gas become denser all the lower energy levels are filled. The Pauli exclusion principle states that each energy level can only contain one spin up electron a ...
Stellar evolution, I
... Subsequent generations of stars start their main sequence phases with different initial compositions. ...
... Subsequent generations of stars start their main sequence phases with different initial compositions. ...
Solar System
... -It is the largest planet in the solar system and the 4th BIGGEST object in the sky! -Since prehistoric times it has been known at a bright “wandering star”. ...
... -It is the largest planet in the solar system and the 4th BIGGEST object in the sky! -Since prehistoric times it has been known at a bright “wandering star”. ...
The Planets
... •Surprisingly the planet Neptune is four times the size of planet Earth •Neptune suffers the most violent weather in our Solar System. ...
... •Surprisingly the planet Neptune is four times the size of planet Earth •Neptune suffers the most violent weather in our Solar System. ...
Slide 1
... Exploration • Why does the position of the stars remain the same, although the position of the Earth in relation to them changes throughout the year? The positions of trees in a forest change, too, when they are observed from different angles – in proportion to the vicinity of the trees to each oth ...
... Exploration • Why does the position of the stars remain the same, although the position of the Earth in relation to them changes throughout the year? The positions of trees in a forest change, too, when they are observed from different angles – in proportion to the vicinity of the trees to each oth ...
Universe and Solar System
... development of thinking regarding the motion of planets and other objects as well as the Big Bang theory, 2) the size, composition and relative location of each planet from the Sun., 3.) the question of how scientists might determine the likely presence of life in the distant solar system, 4.) and w ...
... development of thinking regarding the motion of planets and other objects as well as the Big Bang theory, 2) the size, composition and relative location of each planet from the Sun., 3.) the question of how scientists might determine the likely presence of life in the distant solar system, 4.) and w ...
ASTR 200 : Lecture 15 Ensemble Properties of Stars
... • So, a large cloud (1000s to ~million solar masses) gets cold enough that many cores collapse into stars, giving a cluster • Each star clears gas disk away, but the cluster as a whole also blows out all the remaining interstellar gas, shutting down star formation • The stars settle onto the main se ...
... • So, a large cloud (1000s to ~million solar masses) gets cold enough that many cores collapse into stars, giving a cluster • Each star clears gas disk away, but the cluster as a whole also blows out all the remaining interstellar gas, shutting down star formation • The stars settle onto the main se ...
Problem Set #1
... estimated the relative distances of the Moon and the Sun, but not absolute values. Although we now know the A.U. (the mean radius of the Earth’s orbit) to within about a meter, historically it was very hard to determine. You might think we could just use Newton’s general form of Kepler’s third law, ...
... estimated the relative distances of the Moon and the Sun, but not absolute values. Although we now know the A.U. (the mean radius of the Earth’s orbit) to within about a meter, historically it was very hard to determine. You might think we could just use Newton’s general form of Kepler’s third law, ...
Slide 1
... How stars form: the basic process 1. A cold cloud of gas and dust starts to contract, pulled together by gravity. It breaks up into several smaller clouds and each continues to contract. 2. Within a contracting cloud, each particle attracts every other particle, so that the cloud collapses towards ...
... How stars form: the basic process 1. A cold cloud of gas and dust starts to contract, pulled together by gravity. It breaks up into several smaller clouds and each continues to contract. 2. Within a contracting cloud, each particle attracts every other particle, so that the cloud collapses towards ...
SNC 1D - othsmath
... the next layers outward. Stars rotate. They rotate faster in the middle than they do at the poles A vast cloud of gas and thought to be the birthplace of stars and planets. The hot, condensed object at the centre of a nebula; very young star. The process of energy production in which hydrogen nuclei ...
... the next layers outward. Stars rotate. They rotate faster in the middle than they do at the poles A vast cloud of gas and thought to be the birthplace of stars and planets. The hot, condensed object at the centre of a nebula; very young star. The process of energy production in which hydrogen nuclei ...
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.