Document
... • For neutron stars, maximum mass ~3Msun • What happens if a high-mass star is SO big that its central core is bigger than this? • What happens when gravity is stronger than even neutron degeneracy pressure? ...
... • For neutron stars, maximum mass ~3Msun • What happens if a high-mass star is SO big that its central core is bigger than this? • What happens when gravity is stronger than even neutron degeneracy pressure? ...
Types of Planets and Stars
... vary in size, mass, and brightness, but they all convert hydrogen into helium, also known as nuclear fusion. While our sun will spend 10 billion on its main sequence, a star ten times as massive will stick around for only 20 million years. Red Dwarf -- most common stars in the universe. These star ...
... vary in size, mass, and brightness, but they all convert hydrogen into helium, also known as nuclear fusion. While our sun will spend 10 billion on its main sequence, a star ten times as massive will stick around for only 20 million years. Red Dwarf -- most common stars in the universe. These star ...
Space Unit - Questions and Answers
... A solar prominence is a burst of a huge sheet of gases, also from the inner atmosphere. It is much larger than a flare and may last for days or even weeks. The charged particles from a solar flare affect us in two main ways: They produce the beautiful auroras, and they cause problems in communicatio ...
... A solar prominence is a burst of a huge sheet of gases, also from the inner atmosphere. It is much larger than a flare and may last for days or even weeks. The charged particles from a solar flare affect us in two main ways: They produce the beautiful auroras, and they cause problems in communicatio ...
Relative sizes of astronomical objects
... In this comparison our Sun is down to 1 pixel, a mote of dust with an arrow pointing to it. Jupiter is invisible. Betelgeuse (Alpha Orionis) is a red supergiant. If Betelgeuse replaced our Sun, its surface would lie between the orbit of Mars and Jupiter. Antares (Alpha Scorpii) is a red supergiant 7 ...
... In this comparison our Sun is down to 1 pixel, a mote of dust with an arrow pointing to it. Jupiter is invisible. Betelgeuse (Alpha Orionis) is a red supergiant. If Betelgeuse replaced our Sun, its surface would lie between the orbit of Mars and Jupiter. Antares (Alpha Scorpii) is a red supergiant 7 ...
Space Flight to the Stars - Laureate International College
... layers of the star are pulled into the core by gravity. As the outer material crashes into the inner core, the temperature and pressure increase and the star explodes. ...
... layers of the star are pulled into the core by gravity. As the outer material crashes into the inner core, the temperature and pressure increase and the star explodes. ...
star model
... Sources of stellar energy: since stars lose energy by radiation, stars supported by thermal pressure require an energy source to avoid collapse. • Energy loss at stellar surface as measured by stellar luminosity is compensated by energy release from nuclear reactions through the stellar interior. RS ...
... Sources of stellar energy: since stars lose energy by radiation, stars supported by thermal pressure require an energy source to avoid collapse. • Energy loss at stellar surface as measured by stellar luminosity is compensated by energy release from nuclear reactions through the stellar interior. RS ...
Document
... d = 1/p = (1 / 0.375) x 206265 = 5.50 x 105 AU 14. Luminosity of a blackbody is proportional to R2T4. Statement 1, similar colors implies similar temperature, but the size (radius) may be differ a lot, so the two stars may have different luminosities. Statement 2, two stars of similar colors implies ...
... d = 1/p = (1 / 0.375) x 206265 = 5.50 x 105 AU 14. Luminosity of a blackbody is proportional to R2T4. Statement 1, similar colors implies similar temperature, but the size (radius) may be differ a lot, so the two stars may have different luminosities. Statement 2, two stars of similar colors implies ...
Earth Science SOL Review Sheet #1
... Solstices - the longest and shortest days of the year Equinoxes - times of the year when the sun is located directly above the equator so that day and night are of equal length around the world (March 21 and September 22 – 23) Apollo 11 - the 1st manned landing on the moon Galaxy - billions of stars ...
... Solstices - the longest and shortest days of the year Equinoxes - times of the year when the sun is located directly above the equator so that day and night are of equal length around the world (March 21 and September 22 – 23) Apollo 11 - the 1st manned landing on the moon Galaxy - billions of stars ...
Document
... • Betelgeuse is the only star big enough to directly see its surface with a normal telescope. ...
... • Betelgeuse is the only star big enough to directly see its surface with a normal telescope. ...
Here
... Hubble took 11 days to look at a spot in the sky that appeared to be empty. This is what it found. ...
... Hubble took 11 days to look at a spot in the sky that appeared to be empty. This is what it found. ...
Sun and Stars
... which shines because of nuclear fusion in its core. This nuclear fusion releases energy which travels through the star's different layers and then radiates into outer space. ...
... which shines because of nuclear fusion in its core. This nuclear fusion releases energy which travels through the star's different layers and then radiates into outer space. ...
Nebulas & Stars
... is PKS-2349 which is only about 1500 million light years away from Earth Quasars can live for a very long time scientists say that quasars that were discovered around 35 ...
... is PKS-2349 which is only about 1500 million light years away from Earth Quasars can live for a very long time scientists say that quasars that were discovered around 35 ...
Midterm Review Sheet
... Sun’s stability (solar thermostat) Radiation zone & escape of energy generated in Sun’s core Sun’s convection zone (granules) Sunspots Interaction of magnetic fields with charged particles Solar prominence Sola ...
... Sun’s stability (solar thermostat) Radiation zone & escape of energy generated in Sun’s core Sun’s convection zone (granules) Sunspots Interaction of magnetic fields with charged particles Solar prominence Sola ...
Solutions
... 1. Transit of HD209548. The star HD209548, which has a transiting planet, is roughly the same size as our Sun, which has a radius of about 700,000 kilometers. The planetary transits block 1.7% of the ...
... 1. Transit of HD209548. The star HD209548, which has a transiting planet, is roughly the same size as our Sun, which has a radius of about 700,000 kilometers. The planetary transits block 1.7% of the ...
Earth Science 2nd 9 wk review
... is obtained from its ore, hematite. The sun’s energy is the result of the fusion of hydrogen atoms. Produces energy by fusing hydrogen into helium. ...
... is obtained from its ore, hematite. The sun’s energy is the result of the fusion of hydrogen atoms. Produces energy by fusing hydrogen into helium. ...
PHYSICS 015
... too big. For example, if you wanted to allow a 10-solar-mass star to settle down as a neutron star, about 10 km in diameter, it already inside its Schwarzschild radius and is doomed to collapse! Stars can’t ‘know’ that they should shed a lot of their dangerous mass, to prevent this kind of collapse. ...
... too big. For example, if you wanted to allow a 10-solar-mass star to settle down as a neutron star, about 10 km in diameter, it already inside its Schwarzschild radius and is doomed to collapse! Stars can’t ‘know’ that they should shed a lot of their dangerous mass, to prevent this kind of collapse. ...
Lecture 23 - White Dwarfs and Neutron Stars
... • Only two electrons (one up, one down) can go into each energy level. • In a degenerate gas, all low energy levels are filled. • Electrons have energy, and therefore are in motion and exert pressure even if temperature is zero. • White dwarfs are supported by electron degeneracy. ...
... • Only two electrons (one up, one down) can go into each energy level. • In a degenerate gas, all low energy levels are filled. • Electrons have energy, and therefore are in motion and exert pressure even if temperature is zero. • White dwarfs are supported by electron degeneracy. ...
Answers to Science Semester 1Review Possible hazards in the lab
... e.) HR Diagram is a graph that shows the relationship between a star’s surface temperature and absolute magnitude. f.) Black hole are objects so massive and dense that even light cannot escape its gravity. g.) Neutron star is a star that has collapsed under gravity to the point that the electrons an ...
... e.) HR Diagram is a graph that shows the relationship between a star’s surface temperature and absolute magnitude. f.) Black hole are objects so massive and dense that even light cannot escape its gravity. g.) Neutron star is a star that has collapsed under gravity to the point that the electrons an ...
final review sheet
... Midterm 1 onward. I suggest using this review sheet as a way to gauging how well you understand the material. I also STRONGLY recommend going over the practice final on page 121 of the course reader and the multiple choice review questions at the back of each chapter of the book (solutions are on bs ...
... Midterm 1 onward. I suggest using this review sheet as a way to gauging how well you understand the material. I also STRONGLY recommend going over the practice final on page 121 of the course reader and the multiple choice review questions at the back of each chapter of the book (solutions are on bs ...
PHY 231 Lecture 29 (Fall 2006)
... deliver a net power output over a reasonable time interval is not yet a reality ...
... deliver a net power output over a reasonable time interval is not yet a reality ...
Space Unit - Questions and Answers
... 19. What is the difference between meteors and comets? A meteor is a meteoroid that is trapped by Earth’s gravity and pulled down by Earth’s atmosphere. As it falls through Earth’s atmosphere, it rubs against the molecules of the air (this rubbing is called friction), it becomes hot and vaporizes a ...
... 19. What is the difference between meteors and comets? A meteor is a meteoroid that is trapped by Earth’s gravity and pulled down by Earth’s atmosphere. As it falls through Earth’s atmosphere, it rubs against the molecules of the air (this rubbing is called friction), it becomes hot and vaporizes a ...
IK Pegasi
IK Pegasi (or HR 8210) is a binary star system in the constellation Pegasus. It is just luminous enough to be seen with the unaided eye, at a distance of about 150 light years from the Solar System.The primary (IK Pegasi A) is an A-type main-sequence star that displays minor pulsations in luminosity. It is categorized as a Delta Scuti variable star and it has a periodic cycle of luminosity variation that repeats itself about 22.9 times per day. Its companion (IK Pegasi B) is a massive white dwarf—a star that has evolved past the main sequence and is no longer generating energy through nuclear fusion. They orbit each other every 21.7 days with an average separation of about 31 million kilometres, or 19 million miles, or 0.21 astronomical units (AU). This is smaller than the orbit of Mercury around the Sun.IK Pegasi B is the nearest known supernova progenitor candidate. When the primary begins to evolve into a red giant, it is expected to grow to a radius where the white dwarf can accrete matter from the expanded gaseous envelope. When the white dwarf approaches the Chandrasekhar limit of 1.44 solar masses (M☉), it may explode as a Type Ia supernova.