Astronomical Distances
... arcsecond”. So what on earth does that mean? First of all parallax; close one eye then hold a pencil out in front of you at arm’s length. Then keeping your arm still, change which eye you are looking through. It will appear as though the pencil has moved. The same is true if you apply this to the ap ...
... arcsecond”. So what on earth does that mean? First of all parallax; close one eye then hold a pencil out in front of you at arm’s length. Then keeping your arm still, change which eye you are looking through. It will appear as though the pencil has moved. The same is true if you apply this to the ap ...
Lecture 2+3 - University of Texas Astronomy Home Page
... Topics in class this/next week -- Math review and conventions adopted -- ‘Natural’ units: Angstrom, Astronomical Unit , parcsec and light year -- Important astronomical objects and concepts Building blocks of matter: protons, electron neutrons and atoms Stars: Energy Generation Death of Stars: Plan ...
... Topics in class this/next week -- Math review and conventions adopted -- ‘Natural’ units: Angstrom, Astronomical Unit , parcsec and light year -- Important astronomical objects and concepts Building blocks of matter: protons, electron neutrons and atoms Stars: Energy Generation Death of Stars: Plan ...
Math Primer - UMass Amherst
... First of all – Units are good things! You can say the distance to Boston in miles (or km) instead of inches (or cm)! Translating to useful units is a very handy skill. The key to changing units is remembering to replace a unit by something equivalent ...
... First of all – Units are good things! You can say the distance to Boston in miles (or km) instead of inches (or cm)! Translating to useful units is a very handy skill. The key to changing units is remembering to replace a unit by something equivalent ...
Chapter 19 Notes Stars Stars are bright balls of gas that are trillions
... ii. Blue and white are hot stars. c. Astronomers use an instrument called a spectrograph to break a star’s light into a spectrum i. Spectrum- a band of colors produced when white light passes through a prism. ii. When an element emits light, only some colors of the spectrum show up. d. Emission Line ...
... ii. Blue and white are hot stars. c. Astronomers use an instrument called a spectrograph to break a star’s light into a spectrum i. Spectrum- a band of colors produced when white light passes through a prism. ii. When an element emits light, only some colors of the spectrum show up. d. Emission Line ...
Figure 1
... the extinction-corrected ages and masses of star clusters and associations. These extensive inventories of massive stars, clustered systems, and SFHs will be used for a number of science goals (listed to the right), and will be delivered to the community (see Data Products below). LEGUS observatio ...
... the extinction-corrected ages and masses of star clusters and associations. These extensive inventories of massive stars, clustered systems, and SFHs will be used for a number of science goals (listed to the right), and will be delivered to the community (see Data Products below). LEGUS observatio ...
Lunar Observations of Changes in the Earth`s Albedo (LOCEA)
... • A stable platform pointed at the whole Earth. The ~±6° librations can be tracked with steering mirror in front of telescope • Wavelength range -- 300 - 3000 nm • Optics should capture light from the Earth seen as a 2° disk. Flux is large, 105 e/(s pixel) in visible • For resolution of 100 x 100 pi ...
... • A stable platform pointed at the whole Earth. The ~±6° librations can be tracked with steering mirror in front of telescope • Wavelength range -- 300 - 3000 nm • Optics should capture light from the Earth seen as a 2° disk. Flux is large, 105 e/(s pixel) in visible • For resolution of 100 x 100 pi ...
The Universe and Galaxies - West Jefferson Local Schools
... - universe - sum of all _________ and energy that ever has, does, and ever will exist everything physical that exists in _________ and _________ - _________ – the study of how the universe began, what it is made of and how it continues to evolve and change - Of what is the universe made / composed ...
... - universe - sum of all _________ and energy that ever has, does, and ever will exist everything physical that exists in _________ and _________ - _________ – the study of how the universe began, what it is made of and how it continues to evolve and change - Of what is the universe made / composed ...
Ch. 27 Notes
... difficult – if lucky gravitational lensing can be used when a galaxy's image is being magnified by the gravity of a massive cluster of galaxies parked in front of it, making it appear 11 times brighter. ...
... difficult – if lucky gravitational lensing can be used when a galaxy's image is being magnified by the gravity of a massive cluster of galaxies parked in front of it, making it appear 11 times brighter. ...
I. Parallax
... respective to the background stars when viewed ______ _______________. Because of Earth’s orbit around the Sun, this happens when astronomers view a “nearby” star at ___ _________________________. C. An example of this is when you hold your finger ___________ ________________and view it first with _ ...
... respective to the background stars when viewed ______ _______________. Because of Earth’s orbit around the Sun, this happens when astronomers view a “nearby” star at ___ _________________________. C. An example of this is when you hold your finger ___________ ________________and view it first with _ ...
Edwin Hubble
... • “We are assuming that the universe expands uniformly, at a constant rate, and that the recessional velocity (V) is linearly proportional to the distance (r). Hubble's constant (H0), is determined by observational data, and remains unchanged by the values of (V) and (r).” • (helped prove ...
... • “We are assuming that the universe expands uniformly, at a constant rate, and that the recessional velocity (V) is linearly proportional to the distance (r). Hubble's constant (H0), is determined by observational data, and remains unchanged by the values of (V) and (r).” • (helped prove ...
Old Final
... A) the closer you are to a black hole the slower time passes for you to an outside observer B) light can not escape them C) because of their immense density they can always suck in anything D) light is redshifted while leaving the potential well E) we have no knowledge of what happens beyond the Sch ...
... A) the closer you are to a black hole the slower time passes for you to an outside observer B) light can not escape them C) because of their immense density they can always suck in anything D) light is redshifted while leaving the potential well E) we have no knowledge of what happens beyond the Sch ...
File - Adopt A Constellation
... • Constellations - A pattern or group of stars in the sky that humans observe in a pattern and give a name. • People of ancient time saw the constellations as character or animals in the sky. They made up stories to explain how the object, animal, or character came into the night sky • Earth rotate ...
... • Constellations - A pattern or group of stars in the sky that humans observe in a pattern and give a name. • People of ancient time saw the constellations as character or animals in the sky. They made up stories to explain how the object, animal, or character came into the night sky • Earth rotate ...
Achievements and Challenges for Australian Science
... Large Magellanic Cloud. No supernova visible to the naked eye had been seen for over 400 years so this was indeed a very rare event and it provided all astronomers in the Southern Hemisphere with an unprecedented opportunity to follow the development of an exploding star from the beginning. Although ...
... Large Magellanic Cloud. No supernova visible to the naked eye had been seen for over 400 years so this was indeed a very rare event and it provided all astronomers in the Southern Hemisphere with an unprecedented opportunity to follow the development of an exploding star from the beginning. Although ...
properties of stars 2012
... Variable Stars are those whose luminosity varies. A PULSATING variable is a star that is swelling and shrinking. As it swells, the same energy is spread over a larger area, the star cools and appears dimmer. (also, star cols because less pressure allows energy to escape) As it shrinks, it heats up ...
... Variable Stars are those whose luminosity varies. A PULSATING variable is a star that is swelling and shrinking. As it swells, the same energy is spread over a larger area, the star cools and appears dimmer. (also, star cols because less pressure allows energy to escape) As it shrinks, it heats up ...
Hypothesis vs. Theory ~The Big Bang
... Was formed as the gravitational pull of denser material ...
... Was formed as the gravitational pull of denser material ...
Phys 214. Planets and Life
... Massive stars, with denser and hotter cores, burn faster their fuel than smaller stars, living shorter (only a few million years). Smaller stars, like our Sun, live much longer, 10 billions years. Very small star can live up to hundreds of billions of years. ...
... Massive stars, with denser and hotter cores, burn faster their fuel than smaller stars, living shorter (only a few million years). Smaller stars, like our Sun, live much longer, 10 billions years. Very small star can live up to hundreds of billions of years. ...
STELLAR EVOLUTION
... the next fusion process, until they exhaust all fuel possibilities. The star then ends its existence as a star. A portion of the star’s mass remains as a dead star. The main sequence lifetime of stars depends on the star’s initial mass (the mass contained with the star when it formed). Solar-mass ...
... the next fusion process, until they exhaust all fuel possibilities. The star then ends its existence as a star. A portion of the star’s mass remains as a dead star. The main sequence lifetime of stars depends on the star’s initial mass (the mass contained with the star when it formed). Solar-mass ...
Powerpoint Presentation (large file)
... from Earth when the Earth and the planet pass each other ...
... from Earth when the Earth and the planet pass each other ...
Linking Asteroids and Meteorites through Reflectance
... • 90% of classified stars are on main sequence • Main sequence stars are “young” stars • If a star is leaving the main sequence, it is at the end of its lifespan of burning hydrogen into ...
... • 90% of classified stars are on main sequence • Main sequence stars are “young” stars • If a star is leaving the main sequence, it is at the end of its lifespan of burning hydrogen into ...
James Webb Space Telescope – A Bigger and Better
... Astronomers cannot conduct experiments on the Universe, instead they must patiently observe the night sky as they find it, teasing out its secrets only by collecting and analysing the light received from celestial bodies. Since the time of Galileo, the foremost tool of astronomy has been the telesco ...
... Astronomers cannot conduct experiments on the Universe, instead they must patiently observe the night sky as they find it, teasing out its secrets only by collecting and analysing the light received from celestial bodies. Since the time of Galileo, the foremost tool of astronomy has been the telesco ...
... order to use the hi-precision pointing option it is helpful to use an illuminated reticle eyepiece. But you can also use the CCD or equivalently a 6.4 mm eyepiece. It is not at all necessary that you use this option. In fact, we suggest that you leave if off most of the time. It may come in handy if ...
History of astronomy - Part I.
... Eratosthenes (276-194 BC) figured out a way to measure the circumference of the Earth. Where he worked in Alexandria, he noted that on the summer solstice the elevation angle of the Sun reached 83 degrees (just like College Station). But he heard that in Syene, to the south, the sunlight went strai ...
... Eratosthenes (276-194 BC) figured out a way to measure the circumference of the Earth. Where he worked in Alexandria, he noted that on the summer solstice the elevation angle of the Sun reached 83 degrees (just like College Station). But he heard that in Syene, to the south, the sunlight went strai ...
Slide Pack Best Scope?
... able to reach other worlds relatively quickly. The Apollo missions reached the Moon in about 2. 1/2 days, the Voyager probes reached Jupiter in about 2 years but these spacecraft moved at great speeds ...
... able to reach other worlds relatively quickly. The Apollo missions reached the Moon in about 2. 1/2 days, the Voyager probes reached Jupiter in about 2 years but these spacecraft moved at great speeds ...
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.