THE LIFE CYCLE OF A STAR
... This is very small, hot star, the last stage in the life cycle of a star like the Sun. White dwarfs have a mass similar to that of the Sun, but only 1% of the Sun's diameter; approximately the diameter of the Earth. The surface temperature of a white dwarf is 8000C or more, but being smaller than th ...
... This is very small, hot star, the last stage in the life cycle of a star like the Sun. White dwarfs have a mass similar to that of the Sun, but only 1% of the Sun's diameter; approximately the diameter of the Earth. The surface temperature of a white dwarf is 8000C or more, but being smaller than th ...
doc
... 8. How do we study the x-rays emitted from black holes? 9. Which 2 wave types can be detected by earth-based telescopes? ...
... 8. How do we study the x-rays emitted from black holes? 9. Which 2 wave types can be detected by earth-based telescopes? ...
Star Formation - University of Redlands
... space. • Since space is full of dust, the farther away stars are, the redder they look. • Enough dust and eventually all visible light is scattered or absorbed. ...
... space. • Since space is full of dust, the farther away stars are, the redder they look. • Enough dust and eventually all visible light is scattered or absorbed. ...
AST 101 Final Exam DO NOT open the exam until
... 20.) You are watching TV in the year 3014, and an ad for a new weight less plan comes on. The plan has you go to the distant planet ”Weightlossian”, which is larger in size than the Earth, but has a much smaller mass than the Earth. The advertisement boasts that you’ll have shed pounds the moment yo ...
... 20.) You are watching TV in the year 3014, and an ad for a new weight less plan comes on. The plan has you go to the distant planet ”Weightlossian”, which is larger in size than the Earth, but has a much smaller mass than the Earth. The advertisement boasts that you’ll have shed pounds the moment yo ...
Unit 2 The History of Astronomy
... characteristic set of light wavelengths. • Scientists can use that “light signature” to identify unknown elements. • When analyzing light from the Sun, astronomers found a unique pattern of wavelengths. – Since at the time there was no known counterpart to the element on Earth, scientists named it f ...
... characteristic set of light wavelengths. • Scientists can use that “light signature” to identify unknown elements. • When analyzing light from the Sun, astronomers found a unique pattern of wavelengths. – Since at the time there was no known counterpart to the element on Earth, scientists named it f ...
Lucas - WordPress.com
... Rider” form a nakedeye double star. They are traveling through space together about 80 lightyears away from us, separated by about a lightyear. However, it is unknown if they are actually gravitationally bound to each other. A telescope splits Mizar itself into two stars, but these both are again ...
... Rider” form a nakedeye double star. They are traveling through space together about 80 lightyears away from us, separated by about a lightyear. However, it is unknown if they are actually gravitationally bound to each other. A telescope splits Mizar itself into two stars, but these both are again ...
Exoplanets. I
... Planets do not orbit the Sun - they both orbit the center of mass. The radius of the orbit is inversely proportional to the mass The radius of the Sun’s orbit with respect to the Earth is 1/300,000 AU, or 500 km R 1 M1 = R 2 M 2 ...
... Planets do not orbit the Sun - they both orbit the center of mass. The radius of the orbit is inversely proportional to the mass The radius of the Sun’s orbit with respect to the Earth is 1/300,000 AU, or 500 km R 1 M1 = R 2 M 2 ...
NearInfrared
... light pass though space, dust absorbs a fraction of this. The exact amount depends primarily on the total quantity of dust between the observed and the emitting source. Since dust is formed during the late stages of stellar evolution regions such as nuclei of galaxies, where many generations of star ...
... light pass though space, dust absorbs a fraction of this. The exact amount depends primarily on the total quantity of dust between the observed and the emitting source. Since dust is formed during the late stages of stellar evolution regions such as nuclei of galaxies, where many generations of star ...
Characteristics of Stars
... 25%- helium 2% other elements This is close to the composition of the sun ...
... 25%- helium 2% other elements This is close to the composition of the sun ...
Why Build Big Telescopes? Ideas for Teaching Resolution
... Sensitivity is a measure of how much light a telescope can gather. All other things being equal, a telescope of larger primary mirror or lens is more sensitive than one with a smaller primary, that is, it can collect more light. The size of a primary mirror or lens is normally expressed in terms of ...
... Sensitivity is a measure of how much light a telescope can gather. All other things being equal, a telescope of larger primary mirror or lens is more sensitive than one with a smaller primary, that is, it can collect more light. The size of a primary mirror or lens is normally expressed in terms of ...
Astronomy - Career Account Web Pages
... The Universe's Most Ancient Object The farthest and one of the very earliest galaxies ever seen in the universe appears as a faint red blob in this ultra-deep–field exposure taken with NASA's Hubble Space Telescope. This is the deepest infrared image taken of the universe. Based on the object's colo ...
... The Universe's Most Ancient Object The farthest and one of the very earliest galaxies ever seen in the universe appears as a faint red blob in this ultra-deep–field exposure taken with NASA's Hubble Space Telescope. This is the deepest infrared image taken of the universe. Based on the object's colo ...
December
... production from all sources of fuel. Because the surface-area-tomass ratio of our planet (like all large rocky worlds) is small, that energy has a hard time escaping, building-up and releasing sporadically in catastrophic events: volcanoes and earthquakes! Yet volcanoes occur on worlds that you migh ...
... production from all sources of fuel. Because the surface-area-tomass ratio of our planet (like all large rocky worlds) is small, that energy has a hard time escaping, building-up and releasing sporadically in catastrophic events: volcanoes and earthquakes! Yet volcanoes occur on worlds that you migh ...
Telescopes and Optics
... • Stars, galaxies and gas emit at radio frequencies - synchrotron radiation. • Easier to build - surface of telescope does not need to be as accurate (1/10th of a wavelength). • Dishes made of wire and metal. • Resolution poorer. ...
... • Stars, galaxies and gas emit at radio frequencies - synchrotron radiation. • Easier to build - surface of telescope does not need to be as accurate (1/10th of a wavelength). • Dishes made of wire and metal. • Resolution poorer. ...
of this release
... ellipse ranging between 1 and 5 astronomical units, but this means the planet would cross, and quickly disrupt, the newfound asteroid belt. Instead, Backman and colleagues argue that this planet must have a more circular orbit that keeps it just outside the belt. The other candidate planet was first ...
... ellipse ranging between 1 and 5 astronomical units, but this means the planet would cross, and quickly disrupt, the newfound asteroid belt. Instead, Backman and colleagues argue that this planet must have a more circular orbit that keeps it just outside the belt. The other candidate planet was first ...
Lecture 17 Review
... either explodes or fragments into smaller clouds which form individual stars. A second question is, can the mass of the gas be too small. The answer is yes. If the mass of the cloud is too small it heats up from gravitational contraction, but never gets hot enough to ignite. The gas ball then reache ...
... either explodes or fragments into smaller clouds which form individual stars. A second question is, can the mass of the gas be too small. The answer is yes. If the mass of the cloud is too small it heats up from gravitational contraction, but never gets hot enough to ignite. The gas ball then reache ...
Galaxies - C. Levesque
... this creates a black hole • A black hole is an object so dense that not even light can escape it. • We can find black holes by looking for objects in space ...
... this creates a black hole • A black hole is an object so dense that not even light can escape it. • We can find black holes by looking for objects in space ...
ch6
... slightly different focal points. This effect, called spherical aberration, causes image blurring. Spherical aberration can be corrected by using : - a parabolic objective mirror - or using a correcting mirror ...
... slightly different focal points. This effect, called spherical aberration, causes image blurring. Spherical aberration can be corrected by using : - a parabolic objective mirror - or using a correcting mirror ...
AN INTRODUCTION TO ASTRONOMY Dr. Uri Griv Department of Physics, Ben-Gurion University
... Explanation: Born in 1564, Galileo used a telescope to explore the Solar System. In 1610, he became the first to be amazed by Saturn’s rings, After nearly 400 years, Saturn’s magnificent rings still offer one of the most stunning astronomical sights. Uniquely bright compared to the rings of the othe ...
... Explanation: Born in 1564, Galileo used a telescope to explore the Solar System. In 1610, he became the first to be amazed by Saturn’s rings, After nearly 400 years, Saturn’s magnificent rings still offer one of the most stunning astronomical sights. Uniquely bright compared to the rings of the othe ...
International Ultraviolet Explorer
The International Ultraviolet Explorer (IUE) was an astronomical observatory satellite primarily designed to take ultraviolet spectra. The satellite was a collaborative project between NASA, the UK Science Research Council and the European Space Agency (ESA). The mission was first proposed in early 1964, by a group of scientists in the United Kingdom, and was launched on January 26, 1978 aboard a NASA Delta rocket. The mission lifetime was initially set for 3 years, but in the end it lasted almost 18 years, with the satellite being shut down in 1996. The switch-off occurred for financial reasons, while the telescope was still functioning at near original efficiency.It was the first space observatory to be operated in real time by astronomers who visited the groundstations in the United States and Europe. Astronomers made over 104,000 observations using the IUE, of objects ranging from solar system bodies to distant quasars. Among the significant scientific results from IUE data were the first large scale studies of stellar winds, accurate measurements of the way interstellar dust absorbs light, and measurements of the supernova SN1987A which showed that it defied stellar evolution theories as they then stood. When the mission ended, it was considered the most successful astronomical satellite ever.