What`s Up - April 2016
... Alphard is one of the ‘bright giants’ in our neighbourhood. But our ‘neighbourhood’ is rather large. Alphard is 11 million times as far away from us as our own sun – so it looks a lot dimmer to us! To the south of Sirius, and nearly overhead, is Canopus, second brightest star in the sky, lighting th ...
... Alphard is one of the ‘bright giants’ in our neighbourhood. But our ‘neighbourhood’ is rather large. Alphard is 11 million times as far away from us as our own sun – so it looks a lot dimmer to us! To the south of Sirius, and nearly overhead, is Canopus, second brightest star in the sky, lighting th ...
U7 Review WS KEY
... b. They are explosions that occur at the beginning of a star’s life. c. They can be brighter than an entire galaxy for several days. d. They are explosions in which a star throws its outer layers into space. A rapidly spinning neutron star is called a(n) __quasar___ . An object so massive that l ...
... b. They are explosions that occur at the beginning of a star’s life. c. They can be brighter than an entire galaxy for several days. d. They are explosions in which a star throws its outer layers into space. A rapidly spinning neutron star is called a(n) __quasar___ . An object so massive that l ...
d - Haus der Astronomie
... By averaging, we find the approximate distance to the Andromeda Galaxy: (2,52 ± 0,14) 10 lyly ...
... By averaging, we find the approximate distance to the Andromeda Galaxy: (2,52 ± 0,14) 10 lyly ...
Option_E_Astrophysics_
... Magnitudes are a way of assigning a number to a star so we know how bright it is Similar to how the Richter scale assigns a number to the strength of an earthquake Betelgeuse and Rigel, stars in Orion with apparent magnitudes 0.3 and 0.9 ...
... Magnitudes are a way of assigning a number to a star so we know how bright it is Similar to how the Richter scale assigns a number to the strength of an earthquake Betelgeuse and Rigel, stars in Orion with apparent magnitudes 0.3 and 0.9 ...
Stellar evolution
... Low mass stars (K and M stars): a trillion years! While on Main Sequence, stellar core has H -> He fusion, by p-p chain in stars like Sun or less massive. In more massive stars, “CNO cycle” becomes more important. ...
... Low mass stars (K and M stars): a trillion years! While on Main Sequence, stellar core has H -> He fusion, by p-p chain in stars like Sun or less massive. In more massive stars, “CNO cycle” becomes more important. ...
solar system
... nd the length of daylight. During the spring, the days are warm in middle parts of the Northern Hemiphere, the northern half of the Earth. Summer follows with hot days and warm nights. In utumn, the days become cooler, leading to the cold of winter. The four periods are called climatic seasons when ...
... nd the length of daylight. During the spring, the days are warm in middle parts of the Northern Hemiphere, the northern half of the Earth. Summer follows with hot days and warm nights. In utumn, the days become cooler, leading to the cold of winter. The four periods are called climatic seasons when ...
Star Jeopardy Review #2
... Star formation may be triggered by __________ which help gravity through compression of interstellar clouds to greater densities. ...
... Star formation may be triggered by __________ which help gravity through compression of interstellar clouds to greater densities. ...
Chapter 29
... In what ways are Polaris and the Sun similar and in what ways are they different? Similar: Color and temperature Different: Size and luminosity ...
... In what ways are Polaris and the Sun similar and in what ways are they different? Similar: Color and temperature Different: Size and luminosity ...
Night Sky Checklist October–November
... The following information may help you understand why these objects are on the Night Sky Checklists. Constellations and asterisms (Astronomers recognize 88 official constellations, but asterisms are unofficial and made from parts of one or more constellation. All are imaginary dot-to-dot drawings in ...
... The following information may help you understand why these objects are on the Night Sky Checklists. Constellations and asterisms (Astronomers recognize 88 official constellations, but asterisms are unofficial and made from parts of one or more constellation. All are imaginary dot-to-dot drawings in ...
Name - MIT
... A) A 100 kg mass moving at 1 km/s. B) A 20 kg mass moving at 2 km/s. C) A 2 kg mass moving at 5 km/s. D) A 10 kg mass moving at 4 km/s. E) A 5 kg mass moving at 2 km/s. 7) The Homestake Gold Mine experiment was designed to detect neutrinos. What insight can be gained from such an experiment? A) The ...
... A) A 100 kg mass moving at 1 km/s. B) A 20 kg mass moving at 2 km/s. C) A 2 kg mass moving at 5 km/s. D) A 10 kg mass moving at 4 km/s. E) A 5 kg mass moving at 2 km/s. 7) The Homestake Gold Mine experiment was designed to detect neutrinos. What insight can be gained from such an experiment? A) The ...
EM review
... Brightness measured in terms of radiated flux, F. This is the total amount of light energy emitted per surface area. Assuming that the star is spherical, F=L/4πr2, where L is the star’s luminosity. Also defined is the absolute magnitude of a star, M. This is the apparent magnitude a star would hav ...
... Brightness measured in terms of radiated flux, F. This is the total amount of light energy emitted per surface area. Assuming that the star is spherical, F=L/4πr2, where L is the star’s luminosity. Also defined is the absolute magnitude of a star, M. This is the apparent magnitude a star would hav ...
Astrophysics
... closer together millions of years ago. If Hubble’s graph is used, the origin of this movement = approx. 10 000 million years old ...
... closer together millions of years ago. If Hubble’s graph is used, the origin of this movement = approx. 10 000 million years old ...
Exploring Space
... Expansion lasting forever as stars die out and the universe is filled with dense black dwarfs and black holes The Big Crunch- will gravity pull everything back into a high density, high energy mass as it was before the big bang? ...
... Expansion lasting forever as stars die out and the universe is filled with dense black dwarfs and black holes The Big Crunch- will gravity pull everything back into a high density, high energy mass as it was before the big bang? ...
Stellar Evolution
... The star expands to larger than it ever was during its lifetime a few to about a hundred times bigger. ...
... The star expands to larger than it ever was during its lifetime a few to about a hundred times bigger. ...
Chapter 26
... The Big Bang Theory Astronomers theorize that the universe came into being at a single moment, in an event called the big bang. Big Bang Theory (not the tv show!)- states that the universe began in an instant, billions of years ago, in an enormous explosion. ...
... The Big Bang Theory Astronomers theorize that the universe came into being at a single moment, in an event called the big bang. Big Bang Theory (not the tv show!)- states that the universe began in an instant, billions of years ago, in an enormous explosion. ...
The Life Cycle of a Star
... The Sun’s Death • Since the Sun is considerably smaller it will not explode in a supernova. • Instead it is predicted that it will become a red giant in about ~6 billion years. • When this occurs, all the water on earth will be vaporized and life will cease to exist. • In the final phase the Sun wi ...
... The Sun’s Death • Since the Sun is considerably smaller it will not explode in a supernova. • Instead it is predicted that it will become a red giant in about ~6 billion years. • When this occurs, all the water on earth will be vaporized and life will cease to exist. • In the final phase the Sun wi ...
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.