The Formation of Planetary Systems
... 15.1. With raw material readily available in the form of abundant icy grains, protoplanets in the outer solar system grew quickly and soon became massive enough for their strong gravitational fields to capture large amounts of gas directly from the solar nebula. In this view, called the ...
... 15.1. With raw material readily available in the form of abundant icy grains, protoplanets in the outer solar system grew quickly and soon became massive enough for their strong gravitational fields to capture large amounts of gas directly from the solar nebula. In this view, called the ...
stars-notes
... Composition of Stars, continued • A continuous spectrum shows all of the colors, while an absorption spectrum shows which wavelengths of light are absorbed. • The spectrum of a star is an absorption spectrum because the atmosphere of the star absorbs certain portions of the light produced by the sta ...
... Composition of Stars, continued • A continuous spectrum shows all of the colors, while an absorption spectrum shows which wavelengths of light are absorbed. • The spectrum of a star is an absorption spectrum because the atmosphere of the star absorbs certain portions of the light produced by the sta ...
2.3 Peculiar galaxies
... the centre. Now imagine bringing another galaxy close. Our single star can then feel a force due to both galaxies. The net result is quite complicated, and whats more keeps changing with time, as the galaxies move closer. Rather than moving in a nice simple orbit, the stars do quite complex things. ...
... the centre. Now imagine bringing another galaxy close. Our single star can then feel a force due to both galaxies. The net result is quite complicated, and whats more keeps changing with time, as the galaxies move closer. Rather than moving in a nice simple orbit, the stars do quite complex things. ...
chapter 7
... Astronomers have now detected hundreds of planetary bodies, called exoplanets, moving in orbit around other stars. Most of these are more massive than any of the Sun's planets. These planetary-like bodies are detected because of their strong gravitationally interactions with their stars. However, te ...
... Astronomers have now detected hundreds of planetary bodies, called exoplanets, moving in orbit around other stars. Most of these are more massive than any of the Sun's planets. These planetary-like bodies are detected because of their strong gravitationally interactions with their stars. However, te ...
Measuring the Properties of Stars (ch. 17)
... The only method for directly determining the masses of stars is from binary stars, using Newton’s form of Kepler’s 3rd law. There are three types of binary stars, which depend on how close they are to each other, their relative brightnesses, the distance of the binary, and other factors: a.Visual bi ...
... The only method for directly determining the masses of stars is from binary stars, using Newton’s form of Kepler’s 3rd law. There are three types of binary stars, which depend on how close they are to each other, their relative brightnesses, the distance of the binary, and other factors: a.Visual bi ...
Design and the Anthropic Principle
... Stars. This extra deuterium would cause stars to burn much too rapidly to sustain life on any possible planet. On the other hand, if the mass of the universe were slightly smaller, no helium would be generated during the cooling of the big bang. Without helium, stars cannot produce the heavy element ...
... Stars. This extra deuterium would cause stars to burn much too rapidly to sustain life on any possible planet. On the other hand, if the mass of the universe were slightly smaller, no helium would be generated during the cooling of the big bang. Without helium, stars cannot produce the heavy element ...
NASA-TV Highlights
... Hubble Finds Dwarf Galaxies Formed More Than Their Fair Share of Universe's Stars ...
... Hubble Finds Dwarf Galaxies Formed More Than Their Fair Share of Universe's Stars ...
TEKS 8.13 A, B, and C
... the light from Alpha Centauri, our nearest star, to reach the Earth. When you look into the night sky, you are looking into the history of the universe. The sunlight that shines on us left the Sun 8.5 minutes ago. The sunlight that reaches Jupiter left the sun 35 minutes ago. When you look up into t ...
... the light from Alpha Centauri, our nearest star, to reach the Earth. When you look into the night sky, you are looking into the history of the universe. The sunlight that shines on us left the Sun 8.5 minutes ago. The sunlight that reaches Jupiter left the sun 35 minutes ago. When you look up into t ...
Lecture 3
... • Imagine a star with a relatively cool (4000k) atmosphere. Temperature is just a measure of the average velocity of the atoms and molecules in a gas. For a relatively cool gas there are: (1) Few atomic collisions with enough energy to knock electrons up to the 1st excited state so the majority of t ...
... • Imagine a star with a relatively cool (4000k) atmosphere. Temperature is just a measure of the average velocity of the atoms and molecules in a gas. For a relatively cool gas there are: (1) Few atomic collisions with enough energy to knock electrons up to the 1st excited state so the majority of t ...
Ancient Astronomy - Sierra College Astronomy Home Page
... His model of the universe had Earth revolving around a “central fire” which could not be seen because it was blocked by a “counter Earth”. The moon and Sun traveled around the central fire. ...
... His model of the universe had Earth revolving around a “central fire” which could not be seen because it was blocked by a “counter Earth”. The moon and Sun traveled around the central fire. ...
J: Chapter 4: Stars and Galaxies
... fields above sunspot groups rearrange. CMEs can trigger events that produce auroras. Solar prominence Solar flare ...
... fields above sunspot groups rearrange. CMEs can trigger events that produce auroras. Solar prominence Solar flare ...
ies la arboleda – centro tic - plurilingüe
... (A)- The universe was contained in a single point in space. All of the matter and energy of space was then contained at this point. What existed prior to this event is completely unknown. About 13.73 billion years (13.730.000.000 years) ago a tremendous explosion started the expansion of the univers ...
... (A)- The universe was contained in a single point in space. All of the matter and energy of space was then contained at this point. What existed prior to this event is completely unknown. About 13.73 billion years (13.730.000.000 years) ago a tremendous explosion started the expansion of the univers ...
Notes (PowerPoint)
... • Normally counter-clockwise from above north pole • All planets exhibited this sometimes • Plato’s theory had extra spheres and features to handle retrograde motion ...
... • Normally counter-clockwise from above north pole • All planets exhibited this sometimes • Plato’s theory had extra spheres and features to handle retrograde motion ...
Exploring Exploring - MESSENGER Education
... (7 miles) below sea level. What was at the bottom of the Mariana Trench? In 1960, the famous French underwater explorer, Jacques Piccard, and U.S. Navy Lt. Donald Walsh descended in the U.S. Navy bathyscaphe (a type of deep-sea exploration vehicle) Trieste to find out. The water pressure at the bott ...
... (7 miles) below sea level. What was at the bottom of the Mariana Trench? In 1960, the famous French underwater explorer, Jacques Piccard, and U.S. Navy Lt. Donald Walsh descended in the U.S. Navy bathyscaphe (a type of deep-sea exploration vehicle) Trieste to find out. The water pressure at the bott ...
The Milky Way
... So Can Stochastic Star Formation • Random birth of Massive Stars • Their SN explosions compress nearby clouds & make new stars • Differential rotation of galaxy yields spiral appearance by streching the stars out • This best explains "rattier", broken-up spirals (like the Milky Way, though some Den ...
... So Can Stochastic Star Formation • Random birth of Massive Stars • Their SN explosions compress nearby clouds & make new stars • Differential rotation of galaxy yields spiral appearance by streching the stars out • This best explains "rattier", broken-up spirals (like the Milky Way, though some Den ...
center of mass
... 20. In a given volume of space the Red Dwarf (or lower main sequence) stars are the most abundant, however, on many H-R diagrams very few of these stars are plotted. Why? a. Photographic film and CCDs both have low sensitivity to lowenergy red photons. b. They are so very distant that parallax angle ...
... 20. In a given volume of space the Red Dwarf (or lower main sequence) stars are the most abundant, however, on many H-R diagrams very few of these stars are plotted. Why? a. Photographic film and CCDs both have low sensitivity to lowenergy red photons. b. They are so very distant that parallax angle ...
Chapter 09
... 20. In a given volume of space the Red Dwarf (or lower main sequence) stars are the most abundant, however, on many H-R diagrams very few of these stars are plotted. Why? a. Photographic film and CCDs both have low sensitivity to lowenergy red photons. b. They are so very distant that parallax angle ...
... 20. In a given volume of space the Red Dwarf (or lower main sequence) stars are the most abundant, however, on many H-R diagrams very few of these stars are plotted. Why? a. Photographic film and CCDs both have low sensitivity to lowenergy red photons. b. They are so very distant that parallax angle ...
L8 Condensation
... The collapse of the interstellar gas cloud that leads to the formation of the protoplanetary nebula is a relatively violent process during which temperatures high enough to vaporize most (but not all) solids are reached. Therefore, the dust grains originally contained in the gas will mostly get vapo ...
... The collapse of the interstellar gas cloud that leads to the formation of the protoplanetary nebula is a relatively violent process during which temperatures high enough to vaporize most (but not all) solids are reached. Therefore, the dust grains originally contained in the gas will mostly get vapo ...
Earth Science
... nonrenewable resources. Key concepts include a) fossil fuels, minerals, rocks, water, and vegetation; http://njnie.dl.stevens-tech.edu/curriculum/waterproj/index.shtml: Students will team up around the globe to test fresh water. Join in this collaborative project, comparing the water quality of your ...
... nonrenewable resources. Key concepts include a) fossil fuels, minerals, rocks, water, and vegetation; http://njnie.dl.stevens-tech.edu/curriculum/waterproj/index.shtml: Students will team up around the globe to test fresh water. Join in this collaborative project, comparing the water quality of your ...
Correct!
... The sun rises in the northeast in the summer time and the southeast in the winter time. Click on the money bag to return to the scoreboard ...
... The sun rises in the northeast in the summer time and the southeast in the winter time. Click on the money bag to return to the scoreboard ...
Rare Earth hypothesis
In planetary astronomy and astrobiology, the Rare Earth Hypothesis argues that the origin of life and the evolution of biological complexity such as sexually reproducing, multicellular organisms on Earth (and, subsequently, human intelligence) required an improbable combination of astrophysical and geological events and circumstances. The hypothesis argues that complex extraterrestrial life is a very improbable phenomenon and likely to be extremely rare. The term ""Rare Earth"" originates from Rare Earth: Why Complex Life Is Uncommon in the Universe (2000), a book by Peter Ward, a geologist and paleontologist, and Donald E. Brownlee, an astronomer and astrobiologist, both faculty members at the University of Washington.An alternative view point was argued by Carl Sagan and Frank Drake, among others. It holds that Earth is a typical rocky planet in a typical planetary system, located in a non-exceptional region of a common barred-spiral galaxy. Given the principle of mediocrity (also called the Copernican principle), it is probable that the universe teems with complex life. Ward and Brownlee argue to the contrary: that planets, planetary systems, and galactic regions that are as friendly to complex life as are the Earth, the Solar System, and our region of the Milky Way are very rare.