exercise 1
... Uranus, and Neptune). The inner planets are small and are composed primarily of rock and iron. The outer planets are much larger and consist mainly of hydrogen, helium, and ice. Pluto does not belong to either group, and there is an ongoing debate as to whether Pluto should be categorized as a major ...
... Uranus, and Neptune). The inner planets are small and are composed primarily of rock and iron. The outer planets are much larger and consist mainly of hydrogen, helium, and ice. Pluto does not belong to either group, and there is an ongoing debate as to whether Pluto should be categorized as a major ...
Slide 1
... Terrestrial Planet = small and rocky (inner planets) Jovian Planet = large gaseous (outer planets) http://player.discoveryeducation.com/index.cfm?guidAssetId=21B610C4-B1BB-40E08760-825A41B19E12&blnFromSearch=1&productcode=US ...
... Terrestrial Planet = small and rocky (inner planets) Jovian Planet = large gaseous (outer planets) http://player.discoveryeducation.com/index.cfm?guidAssetId=21B610C4-B1BB-40E08760-825A41B19E12&blnFromSearch=1&productcode=US ...
Integrative Studies 410 Our Place in the Universe
... fuel to burn) we can obtain the lifetime • Large hot blue stars: ~ 20 million years • The Sun: 10 billion years • Small cool red dwarfs: trillions of years ...
... fuel to burn) we can obtain the lifetime • Large hot blue stars: ~ 20 million years • The Sun: 10 billion years • Small cool red dwarfs: trillions of years ...
Where are we at within the Universe? Earth
... How many stars are in our solar system? There is only one star, the Sun, in our solar system. Our Milky Way Galaxy has over 200 billion stars, and the Universe has more stars than there are grains of sand on all of the beaches of the entire planet Earth. The Sun, though an average size and temperatu ...
... How many stars are in our solar system? There is only one star, the Sun, in our solar system. Our Milky Way Galaxy has over 200 billion stars, and the Universe has more stars than there are grains of sand on all of the beaches of the entire planet Earth. The Sun, though an average size and temperatu ...
Interstellar clouds
... • Planetary nebula may form around low-mass dying stars • Form when the mass ejected by the AGB star piles up in a dense expanding shell. • Planetary nebula are visible for about 50,000 years of so, and can be illuminated by a white dwarf. ...
... • Planetary nebula may form around low-mass dying stars • Form when the mass ejected by the AGB star piles up in a dense expanding shell. • Planetary nebula are visible for about 50,000 years of so, and can be illuminated by a white dwarf. ...
instructor notes: week 2
... 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 ...
6.4 What can you see?
... • Using telescopes and space exploration, astronomer have gathered more evidence to support Keplers heliocentric model • This has led to the discovery of hundreds of other planets going around other stars • In observing the Universe, scientists have discovered other galaxies so more models have been ...
... • Using telescopes and space exploration, astronomer have gathered more evidence to support Keplers heliocentric model • This has led to the discovery of hundreds of other planets going around other stars • In observing the Universe, scientists have discovered other galaxies so more models have been ...
ISP 205 Review Questions, Week 10
... center? Gas pressure holds the Sun up. The individual atoms inside the sun are flying around in random directions and constantly bouncing off each other in new random directions. This keeps them from falling to the center. This is what we mean by gas pressure. Gas pressure is proportional to the den ...
... center? Gas pressure holds the Sun up. The individual atoms inside the sun are flying around in random directions and constantly bouncing off each other in new random directions. This keeps them from falling to the center. This is what we mean by gas pressure. Gas pressure is proportional to the den ...
The Universe: Big, weird and kind of scary!
... Solar Eclipse: When the moon comes between the earth and sun and casts its shadow on part of the earth. ...
... Solar Eclipse: When the moon comes between the earth and sun and casts its shadow on part of the earth. ...
The Science of Life in the Universe (Chap 2
... your reasoning clearly. Even if we discover a civilization around other stars, we will never be able to talk with them with the same ease with which we carry on conversations with people on Earth. ...
... your reasoning clearly. Even if we discover a civilization around other stars, we will never be able to talk with them with the same ease with which we carry on conversations with people on Earth. ...
Lecture 3 notes - Department of Physics and Astronomy
... your reasoning clearly. Even if we discover a civilization around other stars, we will never be able to talk with them with the same ease with which we carry on conversations with people on Earth. ...
... your reasoning clearly. Even if we discover a civilization around other stars, we will never be able to talk with them with the same ease with which we carry on conversations with people on Earth. ...
Slide 1
... • Astronomers think that most of the stars in the Milky Way galaxy could also have planets orbiting around them. These are called “extra-solar planets”. ...
... • Astronomers think that most of the stars in the Milky Way galaxy could also have planets orbiting around them. These are called “extra-solar planets”. ...
Lifecycle of a Star
... Massive main sequence star runs out of hydrogen & begins fusing helium, carbon, oxygen, etc. ...
... Massive main sequence star runs out of hydrogen & begins fusing helium, carbon, oxygen, etc. ...
Find the Sun9/16/2010 - Home
... Yes. The Sun appears smaller when viewed from planets that are successively further away. Demo: Show the visitor how the Sun looks from Earth. Ask the visitor to predict how the Sun would look from Pluto, then open that file and show them. Repeat with Mercury. Do the constellations look different wh ...
... Yes. The Sun appears smaller when viewed from planets that are successively further away. Demo: Show the visitor how the Sun looks from Earth. Ask the visitor to predict how the Sun would look from Pluto, then open that file and show them. Repeat with Mercury. Do the constellations look different wh ...
Discussion of Chapter 2 Material
... your reasoning clearly. Even if we discover a civilization around other stars, we will never be able to talk with them with the same ease with which we carry on conversations with people on Earth. ...
... your reasoning clearly. Even if we discover a civilization around other stars, we will never be able to talk with them with the same ease with which we carry on conversations with people on Earth. ...
The Science of Life in the Universe (Chap 2
... your reasoning clearly. Even if we discover a civilization around other stars, we will never be able to talk with them with the same ease with which we carry on conversations with people on Earth. ...
... your reasoning clearly. Even if we discover a civilization around other stars, we will never be able to talk with them with the same ease with which we carry on conversations with people on Earth. ...
early astronomical history
... – Ptolemy of Alexandria improved the geocentric model by assuming each planet moved on a small circle, which in turn had its center move on a much larger circle centered on the Earth – The small circles were called epicycles and were incorporated so as to explain retrograde motion – Ptolemy’s model ...
... – Ptolemy of Alexandria improved the geocentric model by assuming each planet moved on a small circle, which in turn had its center move on a much larger circle centered on the Earth – The small circles were called epicycles and were incorporated so as to explain retrograde motion – Ptolemy’s model ...
Chapter 28 Stars and Their Characteristics
... bright a star “appears” to be from Earth. The Apparent Magnitude of a star is affected by Absolute- Magnitude (Volume x Luminosity) and Distance from Observer. Betelgeuse, one of the brightest stars in the Universe, does not appear to be as bright as our Sun, because of its distance from us compared ...
... bright a star “appears” to be from Earth. The Apparent Magnitude of a star is affected by Absolute- Magnitude (Volume x Luminosity) and Distance from Observer. Betelgeuse, one of the brightest stars in the Universe, does not appear to be as bright as our Sun, because of its distance from us compared ...
The Science of Life in the Universe (Chap 2
... your reasoning clearly. Even if we discover a civilization around other stars, we will never be able to talk with them with the same ease with which we carry on conversations with people on Earth. ...
... your reasoning clearly. Even if we discover a civilization around other stars, we will never be able to talk with them with the same ease with which we carry on conversations with people on Earth. ...
THE SUN: OUR STAR
... hydrogen in the core has been used up. This is where the Sun is in its lifetime right now. Point C is reached when there is no more hydrogen in the core and the fusion of hydrogen starts in the shell around the core. The radius of the Sun will swell to 40% larger than its present size and twice its ...
... hydrogen in the core has been used up. This is where the Sun is in its lifetime right now. Point C is reached when there is no more hydrogen in the core and the fusion of hydrogen starts in the shell around the core. The radius of the Sun will swell to 40% larger than its present size and twice its ...
Powerpoint
... Solar system formed out of a "whirlpool" in a "universal fluid". Planets formed out of eddies in the fluid. Sun formed at center. Planets in cooler regions. Cloud called "Solar Nebula". This is pre-Newton and modern science. But basic idea correct, and the theory evolved as science advanced, as we'l ...
... Solar system formed out of a "whirlpool" in a "universal fluid". Planets formed out of eddies in the fluid. Sun formed at center. Planets in cooler regions. Cloud called "Solar Nebula". This is pre-Newton and modern science. But basic idea correct, and the theory evolved as science advanced, as we'l ...
Discussion of Chapter 2 Material
... your reasoning clearly. Even if we discover a civilization around other stars, we will never be able to talk with them with the same ease with which we carry on conversations with people on Earth. ...
... your reasoning clearly. Even if we discover a civilization around other stars, we will never be able to talk with them with the same ease with which we carry on conversations with people on Earth. ...
Exam #1 Review
... planets. For example: be able to discuss the differences in mass, density, size, etc.; be able to determine how many times larger the planet Jupiter is when compared to the Earth; number of moons; etc.. 14. If given a measurement scale (e.g. 1cm = 1000miles) and the distances and/or radii for ...
... planets. For example: be able to discuss the differences in mass, density, size, etc.; be able to determine how many times larger the planet Jupiter is when compared to the Earth; number of moons; etc.. 14. If given a measurement scale (e.g. 1cm = 1000miles) and the distances and/or radii for ...
Formation of the Solar System
... travelling at a speed of over one billion kilometres per hour, and that a light year equals nearly 10 trillion kilometres, it is no wonder many are baffled when told the circular disk of our galaxy is approximately 100,000 light years across. The sun is located about two thirds of the way out from t ...
... travelling at a speed of over one billion kilometres per hour, and that a light year equals nearly 10 trillion kilometres, it is no wonder many are baffled when told the circular disk of our galaxy is approximately 100,000 light years across. The sun is located about two thirds of the way out from t ...
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.