Multiple Choice, continued Stars, Galaxies, and the Universe
... Today, we know that Copernicus was right: the stars are very far from Earth. In fact, stars are so distant that a new unit of length—the light-year—was created to measure their distance. A light-year is a unit of length equal to the distance that light travels through space in 1 year. Because the sp ...
... Today, we know that Copernicus was right: the stars are very far from Earth. In fact, stars are so distant that a new unit of length—the light-year—was created to measure their distance. A light-year is a unit of length equal to the distance that light travels through space in 1 year. Because the sp ...
File
... A mass of frozen gas, cosmic dust, ice crystals, and organic material that orbits the sun. Sentence: The light of a passing comet is ...
... A mass of frozen gas, cosmic dust, ice crystals, and organic material that orbits the sun. Sentence: The light of a passing comet is ...
26.4 Groups of Stars
... appearance and contains no more than a few thousand stars that are well spread out. Open clusters often contain bright supergiants and gas and dust clouds. Associations are temporary groupings of bright, young stars. In time, gravity from nearby stars breaks these groups apart. Associations are typi ...
... appearance and contains no more than a few thousand stars that are well spread out. Open clusters often contain bright supergiants and gas and dust clouds. Associations are temporary groupings of bright, young stars. In time, gravity from nearby stars breaks these groups apart. Associations are typi ...
Amanda Boyle Starstuff
... black holes and they drag everything down with themselves. But stellar collisions are not so common, at least to us because the universe operates in billions of years, and as a result our fleeting existence makes it difficult to speak with authority on these things. But we do understand the mainstr ...
... black holes and they drag everything down with themselves. But stellar collisions are not so common, at least to us because the universe operates in billions of years, and as a result our fleeting existence makes it difficult to speak with authority on these things. But we do understand the mainstr ...
Gravity Defied From Potato Asteroids to Magnetised Neutron Stars
... gravitation is held off by the pressure of the heated gas. Gravity should take over once this fuel is exhausted unless some other agency saves the star from such a fate. Low mass stars find peace as ‘white dwarfs’ when the electrons settle into a Fermi degenerate phase where the pressure of degenerat ...
... gravitation is held off by the pressure of the heated gas. Gravity should take over once this fuel is exhausted unless some other agency saves the star from such a fate. Low mass stars find peace as ‘white dwarfs’ when the electrons settle into a Fermi degenerate phase where the pressure of degenerat ...
Two-Gyro Performance, Scheduling and Acquisitions
... – This problem was identified by the OTA SEs in some follow-on analysis of the previous problem’s test results. However, the cause of this problem is different. – Problem only occurs with Target-ReAcq style Acqs/ReAcqs where both PASS and the onboard ReAcq process are effectively accounting for a po ...
... – This problem was identified by the OTA SEs in some follow-on analysis of the previous problem’s test results. However, the cause of this problem is different. – Problem only occurs with Target-ReAcq style Acqs/ReAcqs where both PASS and the onboard ReAcq process are effectively accounting for a po ...
Proper Motion of a Star
... measured in arc seconds per year, and symbolized with the Greek letter “mu” μ. Proper motion is generally measured by taking photographs several years apart and measuring the movement of the image of a star with respect to more distant background stars over that time period. Usually decades must ela ...
... measured in arc seconds per year, and symbolized with the Greek letter “mu” μ. Proper motion is generally measured by taking photographs several years apart and measuring the movement of the image of a star with respect to more distant background stars over that time period. Usually decades must ela ...
The star Epsilon UMa, or more commonly known as Alioth
... Different stars have different apparent and absolute bolometric magnitudes. An apparent bolometric magnitude is a number scale invented by a Greek astronomer Hipparchus. This scale describes how bright a star appears in the night sky ranging from 1 for the brightest star to 6 for the dimmest star ab ...
... Different stars have different apparent and absolute bolometric magnitudes. An apparent bolometric magnitude is a number scale invented by a Greek astronomer Hipparchus. This scale describes how bright a star appears in the night sky ranging from 1 for the brightest star to 6 for the dimmest star ab ...
Lab 1: The Celestial Sphere
... something in the sky when we go outside. The altitude-azimuth coordinate system, called the horizon system, fulfills the opposite role: it tells us how to find something in the sky at a given time at a particular location. If somehow we could convert between these systems, we could look up the equat ...
... something in the sky when we go outside. The altitude-azimuth coordinate system, called the horizon system, fulfills the opposite role: it tells us how to find something in the sky at a given time at a particular location. If somehow we could convert between these systems, we could look up the equat ...
The Life Cycle of A Star
... is only a few thousand miles in diameter. It has become a white dwarf. White dwarfs are stable because the inward pull of gravity is balanced by the electrons in the core of the star repulsing each other. With no fuel left to burn, the hot star radiates its remaining heat into the coldness of space ...
... is only a few thousand miles in diameter. It has become a white dwarf. White dwarfs are stable because the inward pull of gravity is balanced by the electrons in the core of the star repulsing each other. With no fuel left to burn, the hot star radiates its remaining heat into the coldness of space ...
Glossary - Royal Astronomical Society of Canada
... element, and a single, concave (diverging) lens as its eyepiece; it has a very narrow field of view, is somewhat limited by chromatic aberration, was the earliest type of telescope (invented c. 1608, in Holland), and was used by Galileo in his epoch-making discoveries of the heavens ...
... element, and a single, concave (diverging) lens as its eyepiece; it has a very narrow field of view, is somewhat limited by chromatic aberration, was the earliest type of telescope (invented c. 1608, in Holland), and was used by Galileo in his epoch-making discoveries of the heavens ...
Big idea # 5 * Earth in space in time
... SC.8.E.5.2 Recognize that the universe contains many billions of galaxies and that each galaxy contains many billions of stars. SC.8.E.5.3 Distinguish the hierarchical relationships between planets and other astronomical bodies relative to solar system, galaxy, and universe, including distance, size ...
... SC.8.E.5.2 Recognize that the universe contains many billions of galaxies and that each galaxy contains many billions of stars. SC.8.E.5.3 Distinguish the hierarchical relationships between planets and other astronomical bodies relative to solar system, galaxy, and universe, including distance, size ...
Dark Skies Above Downeast Maine
... January 3 – The Quadrantid Meteor Shower Peaks. Look for this beautiful shower to be at its best during the early hours of January 3rd. The Quadrantids have a very small window for when the met ...
... January 3 – The Quadrantid Meteor Shower Peaks. Look for this beautiful shower to be at its best during the early hours of January 3rd. The Quadrantids have a very small window for when the met ...
File
... rocky planets in the first 100 million years on the Sun’s existence, while the outer, gaseous planets formed later from the remnants of the Sun’s original nebula. ...
... rocky planets in the first 100 million years on the Sun’s existence, while the outer, gaseous planets formed later from the remnants of the Sun’s original nebula. ...
Aust Curriculum Connections 2012
... Seasonal stars and constellations. Constellations, planets and tonight’s sky. The other planets: orbits and time for a “year”. What are the planets made of? Could I land on Jupiter? How many “years” old would I be if I lived on other planets? How long would it take to travel there? Why are some bodi ...
... Seasonal stars and constellations. Constellations, planets and tonight’s sky. The other planets: orbits and time for a “year”. What are the planets made of? Could I land on Jupiter? How many “years” old would I be if I lived on other planets? How long would it take to travel there? Why are some bodi ...
star_temperatures
... still appear vastly different in brightness if their distances from Earth are different • Reason: intensity of light inversely proportional to the square of the distance the light has to travel – Light wave fronts from point sources are like the surfaces of expanding spheres ...
... still appear vastly different in brightness if their distances from Earth are different • Reason: intensity of light inversely proportional to the square of the distance the light has to travel – Light wave fronts from point sources are like the surfaces of expanding spheres ...
Time and Diurnal Motion
... (June 21) in the town of Syene in southern Egypt (today Aswan, near a huge dam on the river Nile) the noontime Sun was reflected in a deep well, meaning that it was right overhead, at ...
... (June 21) in the town of Syene in southern Egypt (today Aswan, near a huge dam on the river Nile) the noontime Sun was reflected in a deep well, meaning that it was right overhead, at ...
Measuring The Parallax of Barnard's Star
... Subject headings: Parallax, Barnard’s Star, Parsec, Astronomical Unit Barnard’s Star is one of the closest stars to us. It is also the star that has the fastest apparent motion across the sky moving about 11 arcseconds per year. With a right ascension of 17h 53m 26s, it reaches opposition on the nig ...
... Subject headings: Parallax, Barnard’s Star, Parsec, Astronomical Unit Barnard’s Star is one of the closest stars to us. It is also the star that has the fastest apparent motion across the sky moving about 11 arcseconds per year. With a right ascension of 17h 53m 26s, it reaches opposition on the nig ...
December
... Ori), Bellatrix (gamma Ori) and Betelgeuse (alpha Ori). Fully one-third of the 1st magnitude stars visible in the sky (seven of twenty-one) are in the Winter Circle with Sirius, Procyon, Pollux - toss in 2nd magnitude Castor - Capella, Aldebaran, and Rigel on the periphery, and Betelgeuse located of ...
... Ori), Bellatrix (gamma Ori) and Betelgeuse (alpha Ori). Fully one-third of the 1st magnitude stars visible in the sky (seven of twenty-one) are in the Winter Circle with Sirius, Procyon, Pollux - toss in 2nd magnitude Castor - Capella, Aldebaran, and Rigel on the periphery, and Betelgeuse located of ...
Origin of Chemical Elements
... • What can we learn from telescopes? Modern telescopes (especially space telescopes) allow us to observe all the EM waves emitted by stars, not just visible ...
... • What can we learn from telescopes? Modern telescopes (especially space telescopes) allow us to observe all the EM waves emitted by stars, not just visible ...
Mass and the Properties of Main Sequence Stars
... Evolution of Low-Mass Star – II The time it takes to reach the red giant state depends on the mass of the star • For star with lower mass then the Sun, it takes longer. • As the shell hydrogen fusion stops, the helium core of the low mass stars may never a temperature high enough for helium fusion ...
... Evolution of Low-Mass Star – II The time it takes to reach the red giant state depends on the mass of the star • For star with lower mass then the Sun, it takes longer. • As the shell hydrogen fusion stops, the helium core of the low mass stars may never a temperature high enough for helium fusion ...
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.