The Sky is Our Laboratory
... • A galaxy is a body of stars, gas, and dark matter kept together by gravity; • The `cosmos’ is a loose definition to indicate the Universe, or components of it. It comes from Greek, to indicate an harmonious whole, opposed to chaos. ...
... • A galaxy is a body of stars, gas, and dark matter kept together by gravity; • The `cosmos’ is a loose definition to indicate the Universe, or components of it. It comes from Greek, to indicate an harmonious whole, opposed to chaos. ...
Neutron Stars
... Leftover core from Type II supernova - a tightly packed ball of neutrons. Diameter: 20 km only! Mass: 1.4 - 3(?) MSun Density: 1014 g / cm3 ! Surface gravity: 1012 higher Escape velocity: 0.6c ...
... Leftover core from Type II supernova - a tightly packed ball of neutrons. Diameter: 20 km only! Mass: 1.4 - 3(?) MSun Density: 1014 g / cm3 ! Surface gravity: 1012 higher Escape velocity: 0.6c ...
After Dark M S
... both are supernovas, the natures of these two exploding stars are very different. The supernova in M51 may mark the death of a massive star. The supernova in M101 may mark the death of a white dwarf star in a binary star system. The discovery and origins of these two exploding stars, more than 20 mi ...
... both are supernovas, the natures of these two exploding stars are very different. The supernova in M51 may mark the death of a massive star. The supernova in M101 may mark the death of a white dwarf star in a binary star system. The discovery and origins of these two exploding stars, more than 20 mi ...
Astronomy_Stars_n_Galaxies_PowerPoint
... that the light given off by a star or galaxy gets “stretched” if it is moving away from us. This causes the light being given off to have a longer wavelength and the object to appear redder than it really is. This is called the red shift. Using Hubble’s idea, astronomers found that all distant galax ...
... that the light given off by a star or galaxy gets “stretched” if it is moving away from us. This causes the light being given off to have a longer wavelength and the object to appear redder than it really is. This is called the red shift. Using Hubble’s idea, astronomers found that all distant galax ...
Document
... explosions. The core of the star collapses, and crushes together every proton with a corresponding electron turning each electron-proton pair into a neutron. The neutrons, however, can often stop the collapse and remain as a neutron star. • Neutron stars are fascinating objects because they are the ...
... explosions. The core of the star collapses, and crushes together every proton with a corresponding electron turning each electron-proton pair into a neutron. The neutrons, however, can often stop the collapse and remain as a neutron star. • Neutron stars are fascinating objects because they are the ...
Teacher Guide - Astronomy Outreach at UT Austin
... “Our galaxy, by conservative estimates, contains 100 billion stars. The small number of stars we can see at night are the nearby stars in our tiny neighborhood of our galaxy. Stars are not eternal, but live long lives compared to our lifetime. Over time they change. Just like you can look at a famil ...
... “Our galaxy, by conservative estimates, contains 100 billion stars. The small number of stars we can see at night are the nearby stars in our tiny neighborhood of our galaxy. Stars are not eternal, but live long lives compared to our lifetime. Over time they change. Just like you can look at a famil ...
Homework 2 (Due Sept 18, 2014)
... b. Find Jupiter’s mass from the fact that its moon Io orbits every 42.5 hours at an average distance of 422,000 km.! c. You discover a planet orbiting a distant star that has about the same mass as the Sun, with an orbital period of 63 days. What is the planet’s orbital distance?! d. Pluto’s moon Ch ...
... b. Find Jupiter’s mass from the fact that its moon Io orbits every 42.5 hours at an average distance of 422,000 km.! c. You discover a planet orbiting a distant star that has about the same mass as the Sun, with an orbital period of 63 days. What is the planet’s orbital distance?! d. Pluto’s moon Ch ...
Doppler Effect - SAVE MY EXAMS!
... For more awesome GCSE and A level resources, visit us at www.savemyexams.co.uk/ ...
... For more awesome GCSE and A level resources, visit us at www.savemyexams.co.uk/ ...
astronomy study guide
... What is the shape of a planets orbit called? Draw a picture of a planet, the sun and the shape of the planets path around the sun. In the diagram above indicate where the planets velocity is the greatest and where it is the slowest Describe Kepler’s 3 laws of planetary motion (in your own word ...
... What is the shape of a planets orbit called? Draw a picture of a planet, the sun and the shape of the planets path around the sun. In the diagram above indicate where the planets velocity is the greatest and where it is the slowest Describe Kepler’s 3 laws of planetary motion (in your own word ...
Star Cycle2013
... A black hole is an extremely massive remnant from which light can not escape. “Black holes are where God divided by zero” Stephen Wright ...
... A black hole is an extremely massive remnant from which light can not escape. “Black holes are where God divided by zero” Stephen Wright ...
Introduction Notes - Sunflower Astronomy
... Eight (or Nine) planets, Sun, minor planets, moons, comets, meteoroids, and dust. Terrestrial Planets: Mercury, Venus, Earth, and Mars Characteristics: dense (rocky), few or no moons, thin atmospheres, weak magnetic fields, ...
... Eight (or Nine) planets, Sun, minor planets, moons, comets, meteoroids, and dust. Terrestrial Planets: Mercury, Venus, Earth, and Mars Characteristics: dense (rocky), few or no moons, thin atmospheres, weak magnetic fields, ...
Nebular Theory
... matter, usually in the form of hydrogen gas, contained in clouds called nebulae. The Sun is located about ½ way out from the center to the edge on the Orion (local) Arm. ...
... matter, usually in the form of hydrogen gas, contained in clouds called nebulae. The Sun is located about ½ way out from the center to the edge on the Orion (local) Arm. ...
Section 14.7: The Sun
... So bright that you can’t see other stars until the sun has set Provides energy needed by all plants and animals Its gravitational pull keeps us in our steady orbit 1.4 million km across (the earth is only 13000 km across) To compare sizes, if the Sun is a basketball, the Earth would be the ...
... So bright that you can’t see other stars until the sun has set Provides energy needed by all plants and animals Its gravitational pull keeps us in our steady orbit 1.4 million km across (the earth is only 13000 km across) To compare sizes, if the Sun is a basketball, the Earth would be the ...
8th Grade Comprehensive Science
... Outside of our Solar System • The distance to everything outside of our solar system is measured in Light Years. • One light year is the distance light will travel in one year. 186,000 miles per second or 300,000 km per second • The closest star to our solar system is over 4 light years away. • Tha ...
... Outside of our Solar System • The distance to everything outside of our solar system is measured in Light Years. • One light year is the distance light will travel in one year. 186,000 miles per second or 300,000 km per second • The closest star to our solar system is over 4 light years away. • Tha ...
Exam #2 Solutions
... The cooler giant stars are mostly K and M giants with temperatures around 5,000 K to 3,000K and luminosities between 50 and 5,000 solar luminosities. The stars are all larger in radius than the Sun, being between 1 and 100 solar radii. All these stars will have very short lifetimes compared to ...
... The cooler giant stars are mostly K and M giants with temperatures around 5,000 K to 3,000K and luminosities between 50 and 5,000 solar luminosities. The stars are all larger in radius than the Sun, being between 1 and 100 solar radii. All these stars will have very short lifetimes compared to ...
Scale of the Universe in space, time, and motion
... • How long does it take light to travel from the Sun to the Earth? • Find Earth’s rotational speed at the equator from the Earth’s diameter and the length of a day. • Starting at Earth and driving on an interstellar highway at 75 mph, how long would it take to reach Alpha Centauri? The center of the ...
... • How long does it take light to travel from the Sun to the Earth? • Find Earth’s rotational speed at the equator from the Earth’s diameter and the length of a day. • Starting at Earth and driving on an interstellar highway at 75 mph, how long would it take to reach Alpha Centauri? The center of the ...
spring_2002_final - University of Maryland Astronomy
... A. These planets are the five brightest objects in the night sky. B. Planets are observed to “twinkle.” C. Planets were observed to move with respect to the stars. D. The epicycle of each planet is easily visible. E. These planets always were observed to lie on the celestial equator. 48. The mass of ...
... A. These planets are the five brightest objects in the night sky. B. Planets are observed to “twinkle.” C. Planets were observed to move with respect to the stars. D. The epicycle of each planet is easily visible. E. These planets always were observed to lie on the celestial equator. 48. The mass of ...
Stars: from Adolescence to Old Age
... But this new period of stability does not last very long As the helium is quickly used up in the fusion into carbon and oxygen, gravity will once more take over The situation is analogous to the end of the main sequence 4 August 2005 ...
... But this new period of stability does not last very long As the helium is quickly used up in the fusion into carbon and oxygen, gravity will once more take over The situation is analogous to the end of the main sequence 4 August 2005 ...
Star Wars
... This is a make-up lab, worth 100 points. You don't have to complete this, unless you have missed more than one lab or were not doing well in the previous labs. This lab is very easy. Work independently and have fun. The lab is based on the movie STAR WARS: A NEW HOPE (1977). Some of the questions as ...
... This is a make-up lab, worth 100 points. You don't have to complete this, unless you have missed more than one lab or were not doing well in the previous labs. This lab is very easy. Work independently and have fun. The lab is based on the movie STAR WARS: A NEW HOPE (1977). Some of the questions as ...
SkyMatters Jan-2017 - CIT Blackrock Castle Observatory
... and is usually reliable in terms of activity. Typically 40 meteors per hour can be seen, but this can rise to over 120. The early hours of the 4th will be the best time for viewing because the first-quarter Moon will have set and the skies should be dark. Don’t be discouraged if you live in a city o ...
... and is usually reliable in terms of activity. Typically 40 meteors per hour can be seen, but this can rise to over 120. The early hours of the 4th will be the best time for viewing because the first-quarter Moon will have set and the skies should be dark. Don’t be discouraged if you live in a city o ...
The Mass Assembly of Galaxies
... Surprinsingly, therefore, massive star formation has occurred near or at the Galactic Center within the past few million years. The most promissing explanations for this are: 1. Stars have formed in-situ out of the fragmentation of a very dense gas disk 2. The young stars come from an in-spiralling ...
... Surprinsingly, therefore, massive star formation has occurred near or at the Galactic Center within the past few million years. The most promissing explanations for this are: 1. Stars have formed in-situ out of the fragmentation of a very dense gas disk 2. The young stars come from an in-spiralling ...
Sequencing the Stars
... The first thing to notice is that my HR diagram for M13 looks similar to the one shown before. There are, of course, some differences. I’m showing more stars. The VizieR database that I used for the “professional” HR diagram excludes stars that are crowded by nearby stars making it hard to obtain ac ...
... The first thing to notice is that my HR diagram for M13 looks similar to the one shown before. There are, of course, some differences. I’m showing more stars. The VizieR database that I used for the “professional” HR diagram excludes stars that are crowded by nearby stars making it hard to obtain ac ...
Document
... Parallax is the change in angle due to motion Circle = 360o (degrees) 1 degree = 60’ (minutes) 1 minute’ = 60” (arcseconds) ...
... Parallax is the change in angle due to motion Circle = 360o (degrees) 1 degree = 60’ (minutes) 1 minute’ = 60” (arcseconds) ...
PowerPoint
... In the paper “A Celestial Cubic”, Charles Groetsch shows how the orbital radius and mass of an unseen planet circling a star can be obtained from the star’s spectral shift data, via the solution of a cubic equation! ...
... In the paper “A Celestial Cubic”, Charles Groetsch shows how the orbital radius and mass of an unseen planet circling a star can be obtained from the star’s spectral shift data, via the solution of a cubic equation! ...
Corvus (constellation)
Corvus is a small constellation in the Southern Celestial Hemisphere. Its name comes from the Latin word ""raven"" or ""crow"". It includes only 11 stars with brighter than 4.02 magnitudes. One of the 48 constellations listed by the 2nd-century astronomer Ptolemy, it remains one of the 88 modern constellations. The four brightest stars, Gamma, Delta, Epsilon, and Beta Corvi from a distinctive quadrilateral in the night sky. The young star Eta Corvi has been found to have two debris disks.