Ancient astronomy Part 8
... Ancient astronomy Part 8: Native North American astronomy: where medicine wheels demonstrated accurate observation, but calendars had little place ...
... Ancient astronomy Part 8: Native North American astronomy: where medicine wheels demonstrated accurate observation, but calendars had little place ...
Exploring the Universe
... a. Red shift showed that nearly all galaxies are getting farther away from Earth 3. Blue shift: an apparent shift toward shorter wavelengths of light caused when a luminous object moves towards the observer ...
... a. Red shift showed that nearly all galaxies are getting farther away from Earth 3. Blue shift: an apparent shift toward shorter wavelengths of light caused when a luminous object moves towards the observer ...
Galaxies
... Hubble Expansion of Universe During 1920‘s and 30‘s Edwin Hubble was Measuring the distances of stars and galaxies and comparing them to the redshift of their spectra. He discovered that the radial speed of the galaxies increased in proportion to their distance. A plot of later data is shown in the ...
... Hubble Expansion of Universe During 1920‘s and 30‘s Edwin Hubble was Measuring the distances of stars and galaxies and comparing them to the redshift of their spectra. He discovered that the radial speed of the galaxies increased in proportion to their distance. A plot of later data is shown in the ...
Homework #2 Solutions Astronomy 10, Section 2 due: Monday
... 8) If the Earth did not rotate, could you define the celestial poles and equator? No, the celestial poles are the extension of the Earthʼs rotation axis out into space. If the Earth did not rotate, it would have no rotation axis. Likewise, the celestial equator is the Earthʼs equator projected out i ...
... 8) If the Earth did not rotate, could you define the celestial poles and equator? No, the celestial poles are the extension of the Earthʼs rotation axis out into space. If the Earth did not rotate, it would have no rotation axis. Likewise, the celestial equator is the Earthʼs equator projected out i ...
Constellation Argo Navis
... 8,000 light-years away and 300 light-years wide that possesses vast star-forming regions; it has an overall magnitude of 8.0 and a massive apparent diameter, more than 2 degrees. Its central region is called the Keyhole Nebula, named in 1847 by John Herschel. It is about seven light-years wide and i ...
... 8,000 light-years away and 300 light-years wide that possesses vast star-forming regions; it has an overall magnitude of 8.0 and a massive apparent diameter, more than 2 degrees. Its central region is called the Keyhole Nebula, named in 1847 by John Herschel. It is about seven light-years wide and i ...
Chapter 27 Stars and Galaxies
... ball of neutrons, formed from the collapsed core of a supernova. ...
... ball of neutrons, formed from the collapsed core of a supernova. ...
solution
... a sketch and arrows to indicate your selections): (a) reflection nebulae (and the star or stars whose light is being reflected); (b) dark nebulae; (c) H II regions; (d) regions where star formation may be occurring. Explain how you identified each feature. See the annotated figure on the next page. ...
... a sketch and arrows to indicate your selections): (a) reflection nebulae (and the star or stars whose light is being reflected); (b) dark nebulae; (c) H II regions; (d) regions where star formation may be occurring. Explain how you identified each feature. See the annotated figure on the next page. ...
Basic Observations of Stars
... changing directions, expressed as angles. This is called the star’s proper motion. (To calculate the actual speeds through space, we need to know their distances as well.) The changes are more noticeable for nearby stars. A nearby object can appear to ‘whiz’ across the sky even if it is moving at mo ...
... changing directions, expressed as angles. This is called the star’s proper motion. (To calculate the actual speeds through space, we need to know their distances as well.) The changes are more noticeable for nearby stars. A nearby object can appear to ‘whiz’ across the sky even if it is moving at mo ...
Solutions 5
... temperatures, thus, a hotter more luminous star. The greater mass star consumes the available hydrogen at a much higher rate, thus, the star spend less time on the main sequence. Greater mass means that higher mass elements, such as carbon, can be burned. Finally, when the nuclear fuels are exhauste ...
... temperatures, thus, a hotter more luminous star. The greater mass star consumes the available hydrogen at a much higher rate, thus, the star spend less time on the main sequence. Greater mass means that higher mass elements, such as carbon, can be burned. Finally, when the nuclear fuels are exhauste ...
Information and workshee - Athens
... Earth takes 24 hours to completely rotate once on its axis and it is this rotation that gives us day and night. Also discuss that it takes the Earth 365 days to complete on revolution around the Sun. The tilt of the Earth as it revolves around the Sun creates the different seasons on our planet. 3. ...
... Earth takes 24 hours to completely rotate once on its axis and it is this rotation that gives us day and night. Also discuss that it takes the Earth 365 days to complete on revolution around the Sun. The tilt of the Earth as it revolves around the Sun creates the different seasons on our planet. 3. ...
Science Journals * 3-18-13
... near the edge of a disc-shaped galaxy of stars and that the Sun is many thousands of times closer to the earth than any other star. ...
... near the edge of a disc-shaped galaxy of stars and that the Sun is many thousands of times closer to the earth than any other star. ...
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.