February 2013 - astronomy for beginners
... Lyrae and is the 5th star in Lyra. In the chart above it can be found just north (above) the brightest star α (Vega). The two pairs of the double double are labelled as ε1 and ε2 and are separated by 208″. In turn each pair is separated by just 2″, about 160 AU (1 AU = Earth / Sun distance). The fou ...
... Lyrae and is the 5th star in Lyra. In the chart above it can be found just north (above) the brightest star α (Vega). The two pairs of the double double are labelled as ε1 and ε2 and are separated by 208″. In turn each pair is separated by just 2″, about 160 AU (1 AU = Earth / Sun distance). The fou ...
Perspectives of the Earth, Moon and Sun
... 4. Students learn that Earth is the 3rd planet from the Sun; it revolves around the Sun and the Moon revolves around the Earth, which also rotates. (10 mins) Students are reminded that the Earth both rotates on its axis and revolves around the Sun. Answer: We can’t feel the rotation of the Earth bec ...
... 4. Students learn that Earth is the 3rd planet from the Sun; it revolves around the Sun and the Moon revolves around the Earth, which also rotates. (10 mins) Students are reminded that the Earth both rotates on its axis and revolves around the Sun. Answer: We can’t feel the rotation of the Earth bec ...
Stars
... In a star like the Sun, electron degeneracy stops the contraction of the core before the temperature gets high enough to start carbon burning. Supported against further contraction, the core cannot get any more energy by gravitational contraction. From this point on, the core cools down like an ordi ...
... In a star like the Sun, electron degeneracy stops the contraction of the core before the temperature gets high enough to start carbon burning. Supported against further contraction, the core cannot get any more energy by gravitational contraction. From this point on, the core cools down like an ordi ...
Slide 1 - Indiana University Astronomy
... When a neutron star and a black hole orbit each other, the gases sucked off of the neutron star cause what kind of disk around the black hole before disappearing into it? A. Chandrasekhar Disk B. Double Disk C. Funnel Disk D. Accretion Disk ...
... When a neutron star and a black hole orbit each other, the gases sucked off of the neutron star cause what kind of disk around the black hole before disappearing into it? A. Chandrasekhar Disk B. Double Disk C. Funnel Disk D. Accretion Disk ...
Introductory Physics I (54
... 39) The age of the universe is A) between 10 million and 16 million years. B) between 1 billion and 1.6 billion years. C) between 100 million and 160 million years. D) between 10 billion and 16 billion years. E) between 100 billion and 160 billion years. 40) Which of the following is smallest? A) s ...
... 39) The age of the universe is A) between 10 million and 16 million years. B) between 1 billion and 1.6 billion years. C) between 100 million and 160 million years. D) between 10 billion and 16 billion years. E) between 100 billion and 160 billion years. 40) Which of the following is smallest? A) s ...
Time From the Perspective of a Particle Physicist
... For heavy white dwarves with a companion star • acquire mass, if becomes > 1.4 M(Sun) SUPERNOVA (Ia). p + e n + neutrino • Usually leaves neutron star For high mass stars • fusion continues beyond C,O to Iron • if Mass(core) > 1.4 M(Sun) core collapses in SUPERNOVA (II) • leaves either Neutron Sta ...
... For heavy white dwarves with a companion star • acquire mass, if becomes > 1.4 M(Sun) SUPERNOVA (Ia). p + e n + neutrino • Usually leaves neutron star For high mass stars • fusion continues beyond C,O to Iron • if Mass(core) > 1.4 M(Sun) core collapses in SUPERNOVA (II) • leaves either Neutron Sta ...
The supernova of AD1181 – an update
... Recently it has become clear that not only is 3C 58 much less luminous than the Crab nebula, despite being about the same age, but also that (see Green and Scheuer 1993 or Woltjer et al. 1997) the form of its synchrotron spectrum is quite different from that of the Crab. The flat radio spectra of th ...
... Recently it has become clear that not only is 3C 58 much less luminous than the Crab nebula, despite being about the same age, but also that (see Green and Scheuer 1993 or Woltjer et al. 1997) the form of its synchrotron spectrum is quite different from that of the Crab. The flat radio spectra of th ...
This project is now funded
... carry any astronauts. It is very difficult to repair an unmanned spacecraft in Earth’s orbit, and impossible once it leaves orbit. So the components are designed to be rugged and reliable. But history shows that systems in unmanned spacecraft do fail. This may mean that parts of the mission cannot b ...
... carry any astronauts. It is very difficult to repair an unmanned spacecraft in Earth’s orbit, and impossible once it leaves orbit. So the components are designed to be rugged and reliable. But history shows that systems in unmanned spacecraft do fail. This may mean that parts of the mission cannot b ...
How do stars appear to move to an observer on the
... Open clusters Globular clusters Difference – globular clusters have more stars, are in the core of the galaxy and a spherical shape. Open cluster are a loose grouping and are in the spiral arms. Binary stars Used to determine stellar mass Consist of two stars, a multiple star system has more then tw ...
... Open clusters Globular clusters Difference – globular clusters have more stars, are in the core of the galaxy and a spherical shape. Open cluster are a loose grouping and are in the spiral arms. Binary stars Used to determine stellar mass Consist of two stars, a multiple star system has more then tw ...
1700_orbits
... • Astronomers knew the relative distances of the planets, but not the absolute distances. • Known: Jupiter is 5 times farther from the Sun than the Earth is. It takes Jupiter 12 times longer to go around the Sun than it does for the Earth. • Not known: How many kilometers (or miles) are the Earth an ...
... • Astronomers knew the relative distances of the planets, but not the absolute distances. • Known: Jupiter is 5 times farther from the Sun than the Earth is. It takes Jupiter 12 times longer to go around the Sun than it does for the Earth. • Not known: How many kilometers (or miles) are the Earth an ...
AST 341 - Homework IV - Solutions
... The differential optical depth can be written as dτ = −κρds, where ds is the measured distance of the photon’s path and we can write ds = dr in this case, 1 dP ...
... The differential optical depth can be written as dτ = −κρds, where ds is the measured distance of the photon’s path and we can write ds = dr in this case, 1 dP ...
Magnitudes lesson plan
... that he could see from his latitude into six classes of brightness. His idea of six classes probably came from the Babylonians whose base number was six. The formal introduction of six magnitudes has been credited to Ptolemy (100-150 A.D.) who was a Greek/Egyptian astronomer. He simply advanced the ...
... that he could see from his latitude into six classes of brightness. His idea of six classes probably came from the Babylonians whose base number was six. The formal introduction of six magnitudes has been credited to Ptolemy (100-150 A.D.) who was a Greek/Egyptian astronomer. He simply advanced the ...
Project 4: The HR diagram. Open clusters
... they must be very small, so they're called white dwarfs. ...
... they must be very small, so they're called white dwarfs. ...
matthewchristianstarprodject
... plasma formed by certain types of stars when they die. The name originated in the 18th century because of their similarity in appearance to giant planets when viewed through small optical telescopes, and is unrelated to the planets of the solar system. They are a relatively short-lived phenomeno ...
... plasma formed by certain types of stars when they die. The name originated in the 18th century because of their similarity in appearance to giant planets when viewed through small optical telescopes, and is unrelated to the planets of the solar system. They are a relatively short-lived phenomeno ...
A Summary of Stages
... A star on the Main Sequence is undergoing (for over 90% of its life) steady core hydrogen burning, due to its interior structure. While lower-mass M.S. stars (<8 suns, according to your text, although the exact value is not known) are producing sufficient energy by just using the proton-proton chain ...
... A star on the Main Sequence is undergoing (for over 90% of its life) steady core hydrogen burning, due to its interior structure. While lower-mass M.S. stars (<8 suns, according to your text, although the exact value is not known) are producing sufficient energy by just using the proton-proton chain ...
Gingin Observatory July 2015 Newsletter
... Uranus Uranus rises around midnight mid-month. On the 27th, the planet appears stationary against the back ground stars and thereafter is in retrograde motion until late December. Whilst it is moving very slowly at this time it will be close to the 5th magnitude double star Zeta Piscium. In fact, Ur ...
... Uranus Uranus rises around midnight mid-month. On the 27th, the planet appears stationary against the back ground stars and thereafter is in retrograde motion until late December. Whilst it is moving very slowly at this time it will be close to the 5th magnitude double star Zeta Piscium. In fact, Ur ...
Aquarius (constellation)
Aquarius is a constellation of the zodiac, situated between Capricornus and Pisces. Its name is Latin for ""water-carrier"" or ""cup-carrier"", and its symbol is 20px (Unicode ♒), a representation of water.Aquarius is one of the oldest of the recognized constellations along the zodiac (the sun's apparent path). It was one of the 48 constellations listed by the 2nd century AD astronomer Ptolemy, and it remains one of the 88 modern constellations. It is found in a region often called the Sea due to its profusion of constellations with watery associations such as Cetus the whale, Pisces the fish, and Eridanus the river.