Name - MIT
... A) More distant planets orbit the Sun at slower speeds. B) The orbit of each planet about the Sun is an ellipse with the Sun at one focus. C) The force of attraction between any two objects decreases with the square of the distance between their centers. D) As a planet moves around its orbit, it swe ...
... A) More distant planets orbit the Sun at slower speeds. B) The orbit of each planet about the Sun is an ellipse with the Sun at one focus. C) The force of attraction between any two objects decreases with the square of the distance between their centers. D) As a planet moves around its orbit, it swe ...
Kaler`s MEASURING THE SKY
... motion across the sky) along a steady path called the ecliptic. Since there are 365 (actually 365.2422...) days in the year, and 360° in the circle, the Sun moves to the east at the slow pace of only a bit under a degree per day. At the same time it is constantly moving (rather, appearing to move) f ...
... motion across the sky) along a steady path called the ecliptic. Since there are 365 (actually 365.2422...) days in the year, and 360° in the circle, the Sun moves to the east at the slow pace of only a bit under a degree per day. At the same time it is constantly moving (rather, appearing to move) f ...
58KB - NZQA
... sequence to a bright giant earlier in its life cycle. Sirius A is using hydrogen as its fuel source, while Adhara is fusing heavier elements to get its fuel. Sirius A is a main sequence star that is seen as very bright (luminous) in the night sky, because it is very close to Earth (in space terms). ...
... sequence to a bright giant earlier in its life cycle. Sirius A is using hydrogen as its fuel source, while Adhara is fusing heavier elements to get its fuel. Sirius A is a main sequence star that is seen as very bright (luminous) in the night sky, because it is very close to Earth (in space terms). ...
The All-Seeing, All-Magnifying Eye
... If a planet’s gravity deflects light in our direction, we see its star brighten as the deflected light is concentrated toward us. This brightening can last from 15 minutes to a month, depending upon the mass of the planet and how far it is from the star. The brightening can be up to about one magni ...
... If a planet’s gravity deflects light in our direction, we see its star brighten as the deflected light is concentrated toward us. This brightening can last from 15 minutes to a month, depending upon the mass of the planet and how far it is from the star. The brightening can be up to about one magni ...
Astronomy - Dallas ISD
... During maximum sunspot activity, because the high magnetic fields in sunspots give rise to solar flares. ...
... During maximum sunspot activity, because the high magnetic fields in sunspots give rise to solar flares. ...
Characteristics of Stars - Laconia School District
... and luminosity on the y-axis. Since stars go through a definite "life cycle" which can be mapped on the H-R diagram, a star's location on the diagram can indicate both its mass and its relative age. ...
... and luminosity on the y-axis. Since stars go through a definite "life cycle" which can be mapped on the H-R diagram, a star's location on the diagram can indicate both its mass and its relative age. ...
OGT TYPE QUESTIONS
... nuclei with small masses (such as hydrogen) join together, or fuse, to form a larger, more massive nucleus (such as helium). During this process, a massive amount of energy and radioactive emissions (such as gamma rays) are produced. Combustion, and even nuclear fission, would consume too much matte ...
... nuclei with small masses (such as hydrogen) join together, or fuse, to form a larger, more massive nucleus (such as helium). During this process, a massive amount of energy and radioactive emissions (such as gamma rays) are produced. Combustion, and even nuclear fission, would consume too much matte ...
Week 9 notes
... • Now think about a hot stellar atmosphere (say 40000k). Here the collisions in the gas are energetic enough to ionize the H atoms. • Again, even if there is lots of hydrogen, if there are few H atoms with electrons in the 1st excited state, there will be no evidence for the hydrogen in the visible ...
... • Now think about a hot stellar atmosphere (say 40000k). Here the collisions in the gas are energetic enough to ionize the H atoms. • Again, even if there is lots of hydrogen, if there are few H atoms with electrons in the 1st excited state, there will be no evidence for the hydrogen in the visible ...
lecture 1 - University of Florida Astronomy
... – Sun moves east ward relative to stars on celestial sphere – It moves 360 degrees in a year about 1 degree per day – The constellations through which we see the sun move are the constellations of the ...
... – Sun moves east ward relative to stars on celestial sphere – It moves 360 degrees in a year about 1 degree per day – The constellations through which we see the sun move are the constellations of the ...
Diapositiva 1
... enormous but extremely faint halo of gaseous material, over three lightyears across, which surrounds the brighter, familiar planetary nebula. Made with data from the Nordic Optical Telescope in the Canary Islands, the composite picture shows extended emission from the nebula. Planetary nebulae have ...
... enormous but extremely faint halo of gaseous material, over three lightyears across, which surrounds the brighter, familiar planetary nebula. Made with data from the Nordic Optical Telescope in the Canary Islands, the composite picture shows extended emission from the nebula. Planetary nebulae have ...
Astronomy 110: Survey of Astronomy Homework #2
... a. How would the force between the Sun and Earth change if you doubled the distance between them? b. How would the force between the Sun and Earth change if you replaced the Sun with a star twice as massive? c. Compare the gravitational force between Earth and the Sun to that between Jupiter and the ...
... a. How would the force between the Sun and Earth change if you doubled the distance between them? b. How would the force between the Sun and Earth change if you replaced the Sun with a star twice as massive? c. Compare the gravitational force between Earth and the Sun to that between Jupiter and the ...
What is a white dwarf?
... • Supernovae are MUCH, MUCH more luminous (about 10 million times) • Nova: H to He fusion in a surface layer, white dwarf left intact ...
... • Supernovae are MUCH, MUCH more luminous (about 10 million times) • Nova: H to He fusion in a surface layer, white dwarf left intact ...
Exercises - Leiden Observatory
... i-iii. Answer question (a) iii, iv and v for the dynamical timescale. iv. In stellar evolution models one often assumes that stars evolve quasi-statically, i.e. that the star remains in hydrostatic equilibrium throughout. Why can we make this assumption? v. Rapid changes that are sometimes observed ...
... i-iii. Answer question (a) iii, iv and v for the dynamical timescale. iv. In stellar evolution models one often assumes that stars evolve quasi-statically, i.e. that the star remains in hydrostatic equilibrium throughout. Why can we make this assumption? v. Rapid changes that are sometimes observed ...
6-Where to Survey - The Challenger Learning Center
... Image credit: http://www.universetoday.com/wp-content/uploads/2011/02/oort-cloud-nasa.jpg ...
... Image credit: http://www.universetoday.com/wp-content/uploads/2011/02/oort-cloud-nasa.jpg ...
Basic Astronomy Note - Mr. Dewey – Grade 7/8
... Our sun is one star of billions that make up our galaxy (Milky Way). It is 100,000 light years in diameter, which means it would take 100,000 years to travel from edge to edge at the incredible speed of light (roughly 300,000 kilometers per second). The Milky Way, that bright band of light in the ni ...
... Our sun is one star of billions that make up our galaxy (Milky Way). It is 100,000 light years in diameter, which means it would take 100,000 years to travel from edge to edge at the incredible speed of light (roughly 300,000 kilometers per second). The Milky Way, that bright band of light in the ni ...
Ursa Minor
Ursa Minor (Latin: ""Smaller She-Bear"", contrasting with Ursa Major), also known as the Little Bear, is a constellation in the northern sky. Like the Great Bear, the tail of the Little Bear may also be seen as the handle of a ladle, hence the name Little Dipper. It was one of the 48 constellations listed by the 2nd-century astronomer Ptolemy, and remains one of the 88 modern constellations. Ursa Minor has traditionally been important for navigation, particularly by mariners, due to Polaris being the North Star.Polaris, the brightest star in the constellation, is a yellow-white supergiant and the brightest Cepheid variable star in the night sky, ranging from apparent magnitude 1.97 to 2.00. Beta Ursae Minoris, also known as Kochab, is an aging star that has swollen and cooled to become an orange giant with an apparent magnitude of 2.08, only slightly fainter than Polaris. Kochab and magnitude 3 Gamma Ursae Minoris have been called the ""guardians of the pole star"". Planets have been detected orbiting four of the stars, including Kochab. The constellation also contains an isolated neutron star—Calvera—and H1504+65, the hottest white dwarf yet discovered with a surface temperature of 200,000 K.