Jul - Wadhurst Astronomical Society
... due to light from the Sun passing first through the Earth’s atmosphere. He also explained the difference between a total Solar eclipse, when the Moon is closer to us and an Annular eclipse when the Moon’s orbit takes it further away and is visually smaller leaving a bright annular ring. This was fol ...
... due to light from the Sun passing first through the Earth’s atmosphere. He also explained the difference between a total Solar eclipse, when the Moon is closer to us and an Annular eclipse when the Moon’s orbit takes it further away and is visually smaller leaving a bright annular ring. This was fol ...
chapter 26 instructor notes
... While the Eggen, Lynden-Bell, and Sandage mechanism has been proposed for the formation of disk galaxies like spirals and lenticulars, the formation of ellipticals has generally been considered to have been a faster process in which star formation was extremely efficient, leaving nothing for the cre ...
... While the Eggen, Lynden-Bell, and Sandage mechanism has been proposed for the formation of disk galaxies like spirals and lenticulars, the formation of ellipticals has generally been considered to have been a faster process in which star formation was extremely efficient, leaving nothing for the cre ...
Word doc - UC-HiPACC - University of California, Santa Cruz
... gravitational force. If many stars form all at once—that is, if star formation efficiency is high—they will stay together as a gravitationally bound open cluster (like the Pleiades) or a globular cluster (like M13 in Hercules). For more than a decade, it has been known that any two stars that are me ...
... gravitational force. If many stars form all at once—that is, if star formation efficiency is high—they will stay together as a gravitationally bound open cluster (like the Pleiades) or a globular cluster (like M13 in Hercules). For more than a decade, it has been known that any two stars that are me ...
Astronomical distances and Stellar magnitudes
... 1. What is meant by a light year? 2. What is meant by an astronomical unit (AU)? 3. What is meant by a parsec (pc)? 4. What is meant by a mega parsec (Mpc)? 5. What is meant by the apparent magnitude of an astronomical object? 6. Give the approximate distance of the following in AU: (a) Sun to the E ...
... 1. What is meant by a light year? 2. What is meant by an astronomical unit (AU)? 3. What is meant by a parsec (pc)? 4. What is meant by a mega parsec (Mpc)? 5. What is meant by the apparent magnitude of an astronomical object? 6. Give the approximate distance of the following in AU: (a) Sun to the E ...
Celestial Equator
... their places in 48 constellations. The Ptolemaic constellations left a blank area centered not on the present south pole but on a point which, because of precession, would have been the south pole c. 2800 BC, a fact that is consistent with the belief that the constellation system had its origin abou ...
... their places in 48 constellations. The Ptolemaic constellations left a blank area centered not on the present south pole but on a point which, because of precession, would have been the south pole c. 2800 BC, a fact that is consistent with the belief that the constellation system had its origin abou ...
Meteors - Little Worksheets
... across the sky. Some people believe that seeing a shooting star will bring them good luck. It’s hard to find a shooting star because they disappear fast. The correct name for a shooting star is meteor. Besides very large objects like stars, planets and moons, space has lots of little objects. These ...
... across the sky. Some people believe that seeing a shooting star will bring them good luck. It’s hard to find a shooting star because they disappear fast. The correct name for a shooting star is meteor. Besides very large objects like stars, planets and moons, space has lots of little objects. These ...
Chapter 8 - TeacherWeb
... Gravity pulls the dust and gas together into a sphere. As the sphere becomes denser it becomes hotter. Hydrogen changes to helium by a process called nuclear fusion. When a star dies its materials return to space---sometimes to form new stars. Stars can be classified by their size, mass, brightness, ...
... Gravity pulls the dust and gas together into a sphere. As the sphere becomes denser it becomes hotter. Hydrogen changes to helium by a process called nuclear fusion. When a star dies its materials return to space---sometimes to form new stars. Stars can be classified by their size, mass, brightness, ...
May 2009 Tz 2
... (d) Alnitak is a main sequence star with a luminosity similar to that of Antares. Use the value quoted in (c)(ii) to deduce that the mass of Alnitak is in the range 16 MS to 40 MS, where MS is the mass of the Sun. ...
... (d) Alnitak is a main sequence star with a luminosity similar to that of Antares. Use the value quoted in (c)(ii) to deduce that the mass of Alnitak is in the range 16 MS to 40 MS, where MS is the mass of the Sun. ...
Integrative Studies 410 Our Place in the Universe
... • Some have names that go back to ancient times (e.g. Castor and Pollux, Greek mythology) • Some were named by Arab astronomers (e.g. Aldebaran, Algol, etc.) • Since the 17th century we use a scheme that lists stars by constellation – in order of their apparent brightness – labeled alphabetically in ...
... • Some have names that go back to ancient times (e.g. Castor and Pollux, Greek mythology) • Some were named by Arab astronomers (e.g. Aldebaran, Algol, etc.) • Since the 17th century we use a scheme that lists stars by constellation – in order of their apparent brightness – labeled alphabetically in ...
Death of Stars
... Birth Place of Stars: Dark and cold inter-stellar clouds These clouds are made of more hydrogen than helium. These clouds have very small amount of heavier elements. ...
... Birth Place of Stars: Dark and cold inter-stellar clouds These clouds are made of more hydrogen than helium. These clouds have very small amount of heavier elements. ...
The Milky Way Galaxy
... Galaxy contains old stars and little in the way of dust and gas. • The disk of the galaxy contains gas, dust, younger stars with more complex chemical compositions, and active regions of star formation like the Orion nebula. ...
... Galaxy contains old stars and little in the way of dust and gas. • The disk of the galaxy contains gas, dust, younger stars with more complex chemical compositions, and active regions of star formation like the Orion nebula. ...
The Hertzsprung – Russell Diagram Star Data Table
... which type of star? (hint: red giant, main sequence, white dwarf) ...
... which type of star? (hint: red giant, main sequence, white dwarf) ...
SO FAR:
... • Π, Θ, Z velocities but relative to Local Standard of Rest • LSR is point instantaneously centered on Sun, but moving in a perfectly circular orbit. • Solar motion: motion of sun relative to LSR ...
... • Π, Θ, Z velocities but relative to Local Standard of Rest • LSR is point instantaneously centered on Sun, but moving in a perfectly circular orbit. • Solar motion: motion of sun relative to LSR ...
Level :3ASS3-4 School Year: 2009/2010 English
... Our solar system consists of an average star we call the Sun, the planets Mercury, Venus, Earth, Mars, Jupiter, Saturn, Uranus, Neptune, and Pluto. It includes also the satellites of the planets; numerous comets, asteroids, and meteoroids. The moon is the satellite rotating around the Erath and the ...
... Our solar system consists of an average star we call the Sun, the planets Mercury, Venus, Earth, Mars, Jupiter, Saturn, Uranus, Neptune, and Pluto. It includes also the satellites of the planets; numerous comets, asteroids, and meteoroids. The moon is the satellite rotating around the Erath and the ...
Spiral Elliptical Irregular - SMS 8th Grade Astronomy Unit
... The Earth’s Place in the Universe Earth is one of eight (+Pluto!) planets in the solar system We are __________________ million miles away from the sun This is called an Astronomical Unit (AU) (it would take a jet 17 years to travel this far!) Pluto is 39 AU from the sun…How many miles is that? ____ ...
... The Earth’s Place in the Universe Earth is one of eight (+Pluto!) planets in the solar system We are __________________ million miles away from the sun This is called an Astronomical Unit (AU) (it would take a jet 17 years to travel this far!) Pluto is 39 AU from the sun…How many miles is that? ____ ...
The coolest White Dwarf— older than the age of the universe?
... he discovery of an IMBP (Intermediate Mass Binary Pulsar, see figure 1) was reported in the Astrophysical Journal.1 A pulsar is a neutron star that is the remnant of a compact core of a star emitting two flashes of light on each full rotation due to its strong bipolar magnetic fields. These flashes ...
... he discovery of an IMBP (Intermediate Mass Binary Pulsar, see figure 1) was reported in the Astrophysical Journal.1 A pulsar is a neutron star that is the remnant of a compact core of a star emitting two flashes of light on each full rotation due to its strong bipolar magnetic fields. These flashes ...
Sample Exam 1
... 23. Saturn’s rings are clusters of relatively small, individual particles; the rings observed on Jupiter are violent storm clouds swirling above the polar regions of the planet. a. True b. False 24. Why do we see essentially the same face of the Moon at all times? a. because the Moon does not rotate ...
... 23. Saturn’s rings are clusters of relatively small, individual particles; the rings observed on Jupiter are violent storm clouds swirling above the polar regions of the planet. a. True b. False 24. Why do we see essentially the same face of the Moon at all times? a. because the Moon does not rotate ...
mid term exam crossword
... 105. 90% of the universe that we can see, a nebula is primarily 107. what the sun will become 110. the shape of every orbit 116. explained the forces involved with an orbiting object 117. path of a revolving object, Pluto's _____ ...
... 105. 90% of the universe that we can see, a nebula is primarily 107. what the sun will become 110. the shape of every orbit 116. explained the forces involved with an orbiting object 117. path of a revolving object, Pluto's _____ ...
Ursa Major
Ursa Major /ˈɜrsə ˈmeɪdʒər/ (also known as the Great Bear and Charles' Wain) is a constellation in the northern celestial hemisphere. One of the 48 constellations listed by Ptolemy (second century AD), it remains one of the 88 modern constellations. It can be visible throughout the year in most of the northern hemisphere. Its name, Latin for ""the greater (or larger) she-bear"", stands as a reference to and in direct contrast with Ursa Minor, ""the smaller she-bear"", with which it is frequently associated in mythology and amateur astronomy. The constellation's most recognizable asterism, a group of seven relatively bright stars commonly known as the ""Big Dipper"", ""the Wagon"" or ""the Plough"" (among others), both mimicks the shape of the lesser bear (the ""Little Dipper"") and is commonly used as a navigational pointer towards the current northern pole star, Polaris in Ursa Minor. The Big Dipper and the constellation as a whole have mythological significance in numerous world cultures, usually as a symbol of the north.The third largest constellation in the sky, Ursa Major is home to many deep-sky objects including seven Messier objects, four other NGC objects and I Zwicky 18, the youngest known galaxy in the visible universe.