Handout Life of Stars
... accretion. As gravity continues to pull ever more matter inward towards the core, its temperature, pressure and density increases. If a critical temperature in the core of a protostar is reached, then nuclear fusion begins and a star is born. If the critical temperature is not reached, however, it e ...
... accretion. As gravity continues to pull ever more matter inward towards the core, its temperature, pressure and density increases. If a critical temperature in the core of a protostar is reached, then nuclear fusion begins and a star is born. If the critical temperature is not reached, however, it e ...
Astronomy 3.0.2 - Session 1
... spherical heads of different sizes and colors. Stick four or five small-headed pins and four or five large-headed pins into separate corks. Pinheads can be any color, but a variety of colors is best, so that students can tell their “planets” apart. For example, you might include a large pinhead in g ...
... spherical heads of different sizes and colors. Stick four or five small-headed pins and four or five large-headed pins into separate corks. Pinheads can be any color, but a variety of colors is best, so that students can tell their “planets” apart. For example, you might include a large pinhead in g ...
Neptunus
... Both ends of the Solar System were studied in the following search for a Planet X, whose existence might or might not be proven by careful investigation of the motions of other bodies. In the inner Solar System, there was a minor oddity in the motion of Mercury that held out the promise of an infra- ...
... Both ends of the Solar System were studied in the following search for a Planet X, whose existence might or might not be proven by careful investigation of the motions of other bodies. In the inner Solar System, there was a minor oddity in the motion of Mercury that held out the promise of an infra- ...
Episode 24 - Vigyan Prasar
... Minimum number of lunar eclipses could be zero, maximum 3. But total number of eclipses (solar + lunar) cannot exceed 7. ...
... Minimum number of lunar eclipses could be zero, maximum 3. But total number of eclipses (solar + lunar) cannot exceed 7. ...
The cosmological distance ladder
... South Bend, IN. I found that South Bend and College Station are 13.78 degrees apart along a great circle arc. I drove from South Bend to College Station and found that the two locations are 1263 miles apart. But, that’s a squiggly route, not the distance along a great circle arc. Using a map and map ...
... South Bend, IN. I found that South Bend and College Station are 13.78 degrees apart along a great circle arc. I drove from South Bend to College Station and found that the two locations are 1263 miles apart. But, that’s a squiggly route, not the distance along a great circle arc. Using a map and map ...
The 2012 Transit of Venus - HubbleSOURCE
... fine-tune the exposure times for the different instruments and filters used. Ref: Visit Status Report ...
... fine-tune the exposure times for the different instruments and filters used. Ref: Visit Status Report ...
Comets
... In some gas species the coma appears small, because they are destroyed by sunlight very quickly. Other species survive for a long time, and, when we look at them, the coma is very ...
... In some gas species the coma appears small, because they are destroyed by sunlight very quickly. Other species survive for a long time, and, when we look at them, the coma is very ...
Answers to Odd-Numbered Exercises and Problems
... The solar system is 25,000 light years from the center of our Milky Way galaxy. One light year is the distance light travels in one year at a speed of 3.0 * 108 m/s. Astronomers have determined that the solar system is orbiting the center of the galaxy at a speed of 230 km/s. a. Assuming the orbit i ...
... The solar system is 25,000 light years from the center of our Milky Way galaxy. One light year is the distance light travels in one year at a speed of 3.0 * 108 m/s. Astronomers have determined that the solar system is orbiting the center of the galaxy at a speed of 230 km/s. a. Assuming the orbit i ...
the atmosphere
... 1. Where does the Earth get most of our energy?____________________________________________ 2. This energy comes in electromagnetic waves which are classified according to what?____________ __________________________________________________________________________________ 3. Name and describe some t ...
... 1. Where does the Earth get most of our energy?____________________________________________ 2. This energy comes in electromagnetic waves which are classified according to what?____________ __________________________________________________________________________________ 3. Name and describe some t ...
Define the following terms in the space provided
... Gregorian year 365.2425 days Earth mass 5.9736× 1024 kilograms Sun mass 1.9891× 1030 kg = 332,980 × Earth mean Earth radius 6371 kilometers Sun radius 6.96265 × 105 km = 109 × Earth Sun luminosity 3.827× 1026 watts ...
... Gregorian year 365.2425 days Earth mass 5.9736× 1024 kilograms Sun mass 1.9891× 1030 kg = 332,980 × Earth mean Earth radius 6371 kilometers Sun radius 6.96265 × 105 km = 109 × Earth Sun luminosity 3.827× 1026 watts ...
THE LATE HEAVY BOMBARDMENT IN THE INNER SOLAR SYSTEM
... required to accrete in the inner solar system at that time, and problems with deriving this mass from the asteroid belt, it is suggested that the Kuiper Belt objects could be a source for this bombardment spike, possibly linked to the late migration of Neptune outwards in the solar system. ...
... required to accrete in the inner solar system at that time, and problems with deriving this mass from the asteroid belt, it is suggested that the Kuiper Belt objects could be a source for this bombardment spike, possibly linked to the late migration of Neptune outwards in the solar system. ...
Life in the Universe - University of Georgia
... If we scale down everything by 100 million times… Sun = a small truck at the Physics Building at UGA K-B objects = millions of microbes + small insects scattered around northern Georgia ...
... If we scale down everything by 100 million times… Sun = a small truck at the Physics Building at UGA K-B objects = millions of microbes + small insects scattered around northern Georgia ...
Lecture13.v1
... gravity strongly perturbed the orbits of almost all the asteroids • Most of them got nudged into highly eccentric orbits, from which they either leave the Solar System or head inwards toward the Sun • A fraction of the asteroids headed inwards may have hit the early Earth! Page 19 ...
... gravity strongly perturbed the orbits of almost all the asteroids • Most of them got nudged into highly eccentric orbits, from which they either leave the Solar System or head inwards toward the Sun • A fraction of the asteroids headed inwards may have hit the early Earth! Page 19 ...
HP Unit GTOR - student handout
... At one time, the scientific community had proposed there was an undiscovered planet called Vulcan that was causing this peculiar effect. ...
... At one time, the scientific community had proposed there was an undiscovered planet called Vulcan that was causing this peculiar effect. ...
1st EXAM VERSION C - Department of Physics and Astronomy
... D. two stars that are clearly seen as separate but associated in the sky. 25. Absorption lines in the spectra of some binary stars are seen to change periodically from single to double lines and back again. Why is this? A. Oscillations on the surfaces of the stars leads to Doppler-shifted lines. B. ...
... D. two stars that are clearly seen as separate but associated in the sky. 25. Absorption lines in the spectra of some binary stars are seen to change periodically from single to double lines and back again. Why is this? A. Oscillations on the surfaces of the stars leads to Doppler-shifted lines. B. ...
ASTRONOMY: WHAT DO YOU NEED TO KNOW
... Degenerate matter is high density matter whose temperature no longer depends on temperature. It is a gas but resists compression. It is found in white dwarfs near the end of a star’s lifetime. Know the characteristics and lifespan characteristics of red dwarfs. Less than 0.4 solar masses; totally co ...
... Degenerate matter is high density matter whose temperature no longer depends on temperature. It is a gas but resists compression. It is found in white dwarfs near the end of a star’s lifetime. Know the characteristics and lifespan characteristics of red dwarfs. Less than 0.4 solar masses; totally co ...
The science behind our Sun and its interaction with Earth The
... How The Sun affects Life On Earth. Our Sun has lived for approximately 4.6 billion years. It is about halfway through its lifespan (Frank, 2008). The Sun's light and heat are absolutely vital to human existence, yet most of us take them for granted. The Sun is the most important factor in Earth supp ...
... How The Sun affects Life On Earth. Our Sun has lived for approximately 4.6 billion years. It is about halfway through its lifespan (Frank, 2008). The Sun's light and heat are absolutely vital to human existence, yet most of us take them for granted. The Sun is the most important factor in Earth supp ...
A report of the SEEDS Direct Imaging Survey
... 120 nights from 2009; finished in 2015 Jan, only <1 night loss due to HiCIAO NIR direct imaging and census of giant planets in the outer regions (10-100AU) around ~500 solar-type and massive stars Exploring protoplanetary disks and debris disks for the origin of their diversity and evolution at the ...
... 120 nights from 2009; finished in 2015 Jan, only <1 night loss due to HiCIAO NIR direct imaging and census of giant planets in the outer regions (10-100AU) around ~500 solar-type and massive stars Exploring protoplanetary disks and debris disks for the origin of their diversity and evolution at the ...
Geo-centric astronomy from Pythagoras to Ptolemy File
... on the same course around the North star. The next night, you will find the entire show being repeated, pretty much in the same position that it was the previous night. In short, the Big Dipper and other stars near the North Star appear to follow a circular path, with the North Star at the center. T ...
... on the same course around the North star. The next night, you will find the entire show being repeated, pretty much in the same position that it was the previous night. In short, the Big Dipper and other stars near the North Star appear to follow a circular path, with the North Star at the center. T ...
Chapter 12
... During the early stages of a star formation the objects are called a protostars. The internal temperature is not high enough to produce fusion. These objects radiate energy away in the form of light. That energy comes from gravitational energy converted to heat. Once they reach the Main Sequence, T ...
... During the early stages of a star formation the objects are called a protostars. The internal temperature is not high enough to produce fusion. These objects radiate energy away in the form of light. That energy comes from gravitational energy converted to heat. Once they reach the Main Sequence, T ...
Formation and evolution of the Solar System
The formation of the Solar System began 4.6 billion years ago with the gravitational collapse of a small part of a giant molecular cloud. Most of the collapsing mass collected in the center, forming the Sun, while the rest flattened into a protoplanetary disk out of which the planets, moons, asteroids, and other small Solar System bodies formed.This widely accepted model, known as the nebular hypothesis, was first developed in the 18th century by Emanuel Swedenborg, Immanuel Kant, and Pierre-Simon Laplace. Its subsequent development has interwoven a variety of scientific disciplines including astronomy, physics, geology, and planetary science. Since the dawn of the space age in the 1950s and the discovery of extrasolar planets in the 1990s, the model has been both challenged and refined to account for new observations.The Solar System has evolved considerably since its initial formation. Many moons have formed from circling discs of gas and dust around their parent planets, while other moons are thought to have formed independently and later been captured by their planets. Still others, such as the Moon, may be the result of giant collisions. Collisions between bodies have occurred continually up to the present day and have been central to the evolution of the Solar System. The positions of the planets often shifted due to gravitational interactions. This planetary migration is now thought to have been responsible for much of the Solar System's early evolution.In roughly 5 billion years, the Sun will cool and expand outward many times its current diameter (becoming a red giant), before casting off its outer layers as a planetary nebula and leaving behind a stellar remnant known as a white dwarf. In the far distant future, the gravity of passing stars will gradually reduce the Sun's retinue of planets. Some planets will be destroyed, others ejected into interstellar space. Ultimately, over the course of tens of billions of years, it is likely that the Sun will be left with none of the original bodies in orbit around it.