Sample Answer Sheet for The 10 Tourist Wonders of the
... Justification: Massive stars end their lives in huge explosions that astronomers call supernovae. As much as 90% of the star’s material can be thrown off during the explosion and, in the process, new (heavier) elements are made, and then distributed at high speed into the Galaxy. In many ways, life ...
... Justification: Massive stars end their lives in huge explosions that astronomers call supernovae. As much as 90% of the star’s material can be thrown off during the explosion and, in the process, new (heavier) elements are made, and then distributed at high speed into the Galaxy. In many ways, life ...
Brightness vs. Distance
... Outside measuring the sun or the stars: Many possible conditions --clouds, fog, water vapor, air pollution, smoke. All absorb or scatter light which decreases the amount that comes through. Also, sunlight and starlight reflect off the “top” of the atmosphere and never reach the Earth. For the sun th ...
... Outside measuring the sun or the stars: Many possible conditions --clouds, fog, water vapor, air pollution, smoke. All absorb or scatter light which decreases the amount that comes through. Also, sunlight and starlight reflect off the “top” of the atmosphere and never reach the Earth. For the sun th ...
Earth
... What is known about stars? What is the sun made of? The sun is a huge, glowing sphere of hot gas. Most of this gas is hydrogen (about 70%) and helium (about 28%). Carbon, nitrogen and oxygen make up 1.5% and the other 0.5% is made up of small amounts of many other elements such as neon, iron, silic ...
... What is known about stars? What is the sun made of? The sun is a huge, glowing sphere of hot gas. Most of this gas is hydrogen (about 70%) and helium (about 28%). Carbon, nitrogen and oxygen make up 1.5% and the other 0.5% is made up of small amounts of many other elements such as neon, iron, silic ...
Foundation 1 - Discovering Astronomy
... 2: Identify the defining characteristic of main-sequence stars and compare the relative lifetimes on the main sequence for stars of different mass. 3: List the names of nuclear fusion reactions and indicate the classes of stars in which each reaction is thought to be active. 4: Identify the physical ...
... 2: Identify the defining characteristic of main-sequence stars and compare the relative lifetimes on the main sequence for stars of different mass. 3: List the names of nuclear fusion reactions and indicate the classes of stars in which each reaction is thought to be active. 4: Identify the physical ...
Astronomy Assignment #1
... 21. Which star is the current pole star? Which star was the pole star 2,000 years ago? Which star will be the pole star 8,000 years from now? 22. Why is there a difference between the sidereal day and solar day? Instructor Assigned Topic: Sketch the apparent motion of the stars, following the examp ...
... 21. Which star is the current pole star? Which star was the pole star 2,000 years ago? Which star will be the pole star 8,000 years from now? 22. Why is there a difference between the sidereal day and solar day? Instructor Assigned Topic: Sketch the apparent motion of the stars, following the examp ...
Sample Exam 1
... a. largest and most massive planet b. a rotational speed slower than Mercury c. dominantly composed of hydrogen d. a very dense atmosphere 17. Micrometeorites are found on the surface of the Earth, what are they called prior to impact? a. meteoroids flying through space, meteors as they cross the Ea ...
... a. largest and most massive planet b. a rotational speed slower than Mercury c. dominantly composed of hydrogen d. a very dense atmosphere 17. Micrometeorites are found on the surface of the Earth, what are they called prior to impact? a. meteoroids flying through space, meteors as they cross the Ea ...
powerpoint version
... If the mass of the core is more than about 3 solar masses the neutron degeneracy is overwhelmed and the core goes on collapsing. When the core diameter reaches the Schwarzschild radius (9 km for a 3 solar mass remnant) nothing, not even light, can escape. ...
... If the mass of the core is more than about 3 solar masses the neutron degeneracy is overwhelmed and the core goes on collapsing. When the core diameter reaches the Schwarzschild radius (9 km for a 3 solar mass remnant) nothing, not even light, can escape. ...
mass_spetral
... When the stars are farther apart (a is increased) they move more slowly in their orbit. Measuring the time it takes for the spectral lines to return to their starting wavelength gives us the orbital ...
... When the stars are farther apart (a is increased) they move more slowly in their orbit. Measuring the time it takes for the spectral lines to return to their starting wavelength gives us the orbital ...
Three types of binary stars.
... When the stars are farther apart (a is increased) they move more slowly in their orbit. Measuring the time it takes for the spectral lines to return to their starting wavelength gives us the orbital period ...
... When the stars are farther apart (a is increased) they move more slowly in their orbit. Measuring the time it takes for the spectral lines to return to their starting wavelength gives us the orbital period ...
Consequences of Neutrino Emission from a Phase
... density (e.g. Witten 1984) Strange matter can be formed in various astrophysical situations, e.g. early Universe (Witten 84), in the core of proto-neutron stars (e.g. Takahara et al. 85), accreting binaries (Cheng & Dai 96) etc. However,the exact phase transition process is still an open question. I ...
... density (e.g. Witten 1984) Strange matter can be formed in various astrophysical situations, e.g. early Universe (Witten 84), in the core of proto-neutron stars (e.g. Takahara et al. 85), accreting binaries (Cheng & Dai 96) etc. However,the exact phase transition process is still an open question. I ...
Our Universe
... including heat and light, cannot exist. •These black holes are a million to a billion times more massive than our sun! •Is there a black hole in the center of our Milky Way- YES! •The fundamental descriptions of black holes are based on equations in the theory of general relativity developed by the ...
... including heat and light, cannot exist. •These black holes are a million to a billion times more massive than our sun! •Is there a black hole in the center of our Milky Way- YES! •The fundamental descriptions of black holes are based on equations in the theory of general relativity developed by the ...
Name - MIT
... E) two helium nuclei into one carbon nucleus plus energy and a neutrino 32) A white dwarf is ____. A) a precursor to a black hole. B) a brown dwarf that has exhausted its fuel for nuclear fusion. C) what most stars become when they die. D) an early stage of a neutron star. E) a protostar that gives ...
... E) two helium nuclei into one carbon nucleus plus energy and a neutrino 32) A white dwarf is ____. A) a precursor to a black hole. B) a brown dwarf that has exhausted its fuel for nuclear fusion. C) what most stars become when they die. D) an early stage of a neutron star. E) a protostar that gives ...
Properties of Stars - Mr. Carter`s Earth
... The Hertzsprung-Russell diagram is actually a graph that illustrates the relationship that exists between the average surface temperature of stars and their absolute magnitude, which is how bright they would appear to be if they were all the same distance away. Rather than speak of the brightness of ...
... The Hertzsprung-Russell diagram is actually a graph that illustrates the relationship that exists between the average surface temperature of stars and their absolute magnitude, which is how bright they would appear to be if they were all the same distance away. Rather than speak of the brightness of ...
Supernovae – the biggest bangs since the Big Bang
... Another way to blow up a star is to consider the evolution of a star with 8 times the mass of the Sun (or more). These stars are very rare. Only one in a thousand stars formed has this much mass. An 8 solar mass star will not live for 10 billion years converting hydrogen into helium in its core. ...
... Another way to blow up a star is to consider the evolution of a star with 8 times the mass of the Sun (or more). These stars are very rare. Only one in a thousand stars formed has this much mass. An 8 solar mass star will not live for 10 billion years converting hydrogen into helium in its core. ...
31_Finding Earths
... and He such as C, O, Fe…). We think these elements helped form the first solids as the gas cloud cooled and these solids acted as nucleation sites for additional material to condense to form rocky cores of planets. ...
... and He such as C, O, Fe…). We think these elements helped form the first solids as the gas cloud cooled and these solids acted as nucleation sites for additional material to condense to form rocky cores of planets. ...
Document
... the same time. • The cluster is as old as the most luminous (massive) star left on the MS. • All MS stars to the left have already used up their H fuel and are gone. • The position of the hottest, brightest star on a cluster’s main sequence is called the main sequence turnoff point. ...
... the same time. • The cluster is as old as the most luminous (massive) star left on the MS. • All MS stars to the left have already used up their H fuel and are gone. • The position of the hottest, brightest star on a cluster’s main sequence is called the main sequence turnoff point. ...
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.