Cosmic Distance Ladder Terrence Tao (UCLA)
... precise relationship. This gave yet another way to obtain absolute brightness, and hence observed distances. • Because Cepheids are so bright, this method works up to 13,000,000 light years! Most galaxies are fortunate to have at least one Cepheid in them, so we know the distances to all galaxies ou ...
... precise relationship. This gave yet another way to obtain absolute brightness, and hence observed distances. • Because Cepheids are so bright, this method works up to 13,000,000 light years! Most galaxies are fortunate to have at least one Cepheid in them, so we know the distances to all galaxies ou ...
Chapter 2 Discovering the Universe for Yourself
... – very bright when visible; morning or evening “star” ...
... – very bright when visible; morning or evening “star” ...
Working with the Illinois Learning Standards: A Constructivist
... The Milky Way consists solely of that band of light arching across the nighttime sky. • The sun and planets are not part of the Milky Way. ACTIVITIES: ...
... The Milky Way consists solely of that band of light arching across the nighttime sky. • The sun and planets are not part of the Milky Way. ACTIVITIES: ...
Jul - Wadhurst Astronomical Society
... The phases of the Moon we see were explained and we were told that the best time to see the Moon’s craters is not when light from the Sun is full on but is at an oblique angle, revealing the walls of the craters by their shadows. One face of the Moon is always directed towards us but due to the Moon ...
... The phases of the Moon we see were explained and we were told that the best time to see the Moon’s craters is not when light from the Sun is full on but is at an oblique angle, revealing the walls of the craters by their shadows. One face of the Moon is always directed towards us but due to the Moon ...
explaining the seasons and locating the north and south celestial
... persons future could be predicted by what sign of the zodiac he or she was born under (astrology). It is said that the famous astronomer Johannes Kepler , who was imperial court mathematician to king Rudolph II in southern Germany, had as his main function the casting of horoscopes for local dignita ...
... persons future could be predicted by what sign of the zodiac he or she was born under (astrology). It is said that the famous astronomer Johannes Kepler , who was imperial court mathematician to king Rudolph II in southern Germany, had as his main function the casting of horoscopes for local dignita ...
Celestial Motions
... • Why do we see phases of the Moon? – Half the Moon is lit by the Sun; half is in shadow, and its appearance to us is determined by the relative positions of Sun, Moon, and Earth. Half of the Earth is also lit by the Sun. • What causes eclipses? – Lunar eclipse: Earth’s shadow on the Moon – Solar ec ...
... • Why do we see phases of the Moon? – Half the Moon is lit by the Sun; half is in shadow, and its appearance to us is determined by the relative positions of Sun, Moon, and Earth. Half of the Earth is also lit by the Sun. • What causes eclipses? – Lunar eclipse: Earth’s shadow on the Moon – Solar ec ...
lecture 2
... Lunar eclipses occur at FULL Moon PHASE Lunar eclipses do not occur every month because the Moon’s orbital plane is tilted with respect to the ecliptic – a total lunar eclipse occurs when the Moon crosses the ecliptic at full Moon – since the Earth’s shadow is much bigger than the Moon, total lunar ...
... Lunar eclipses occur at FULL Moon PHASE Lunar eclipses do not occur every month because the Moon’s orbital plane is tilted with respect to the ecliptic – a total lunar eclipse occurs when the Moon crosses the ecliptic at full Moon – since the Earth’s shadow is much bigger than the Moon, total lunar ...
Motion in the Sky & Getting to know the Sky
... Problem: Humans live for a short time (100 years) compared to the age of the universe We don’t have the luxury of watching the universe undergo changes over our lifetimes (it actually changes very little on time scales less than a few million years) ...
... Problem: Humans live for a short time (100 years) compared to the age of the universe We don’t have the luxury of watching the universe undergo changes over our lifetimes (it actually changes very little on time scales less than a few million years) ...
Frostburg State Planetarium presents
... • Even the nearest planets appear as * (points) as we see them with our eyes; for even these objects far away Venus at closest 100x farther than our moon • To tell a planet from a star, all night stars twinkle and planets usually shine steady. • Also satellites (especially Space Station) shine stead ...
... • Even the nearest planets appear as * (points) as we see them with our eyes; for even these objects far away Venus at closest 100x farther than our moon • To tell a planet from a star, all night stars twinkle and planets usually shine steady. • Also satellites (especially Space Station) shine stead ...
Shattering geocentric, anthrocentric worldviews since 1543
... Eudoxus (~410-347 BC), a student of Plato came up with one of the first geocentric models of the universe. The Earth was surrounded by concentric spheres that held the moon, the sun, Venus, Mercury, Mars, Jupiter, Saturn and the stars in that order. ...
... Eudoxus (~410-347 BC), a student of Plato came up with one of the first geocentric models of the universe. The Earth was surrounded by concentric spheres that held the moon, the sun, Venus, Mercury, Mars, Jupiter, Saturn and the stars in that order. ...
Astronomy Powerpoint
... Because the sun is made of gas, no sharp boundaries exist between its various layers. Keeping this in mind, we can divide the sun into four parts: the solar interior; the visible surface, or photosphere; and two atmospheric layers, the chromosphere and corona. ...
... Because the sun is made of gas, no sharp boundaries exist between its various layers. Keeping this in mind, we can divide the sun into four parts: the solar interior; the visible surface, or photosphere; and two atmospheric layers, the chromosphere and corona. ...
Boonesborough Days - Tri
... has a moon Charon with a diameter that is more than 50% of its own size. Such a planet-moon ratio is very different from the other six planets that have moons. Many have recently classified Pluto and Charon as double dwarf planets. ...
... has a moon Charon with a diameter that is more than 50% of its own size. Such a planet-moon ratio is very different from the other six planets that have moons. Many have recently classified Pluto and Charon as double dwarf planets. ...
The star
... It is three thousand light years to the Vatican. Once, I believed that space could have no power over faith, just as I believed that the heavens declared the glory of God’s handiwork. Now I have seen that handiwork, and my faith is sorely troubled. I stare at the crucifix that hangs on the cabin wal ...
... It is three thousand light years to the Vatican. Once, I believed that space could have no power over faith, just as I believed that the heavens declared the glory of God’s handiwork. Now I have seen that handiwork, and my faith is sorely troubled. I stare at the crucifix that hangs on the cabin wal ...
study-notes-for-2016-2017-1st-qtr-exam
... The Earth has several unique properties that that make it different from other celestial bodies within our solar system. First of all, Earth sustains life while no other celestial body has been found to sustain life. The Earth is unique and can sustain life for the following reasons. Because of the ...
... The Earth has several unique properties that that make it different from other celestial bodies within our solar system. First of all, Earth sustains life while no other celestial body has been found to sustain life. The Earth is unique and can sustain life for the following reasons. Because of the ...
Sep 2017 - What`s Out Tonight?
... and hugs close to the Sun, so you see it for a short time in the longer in its group. west after sunset or in the east before sunrise. Jupiter can be out Globular Clusters look like fuzzy balls because they contain all night and always outshines any star. Everyone enjoys its 4 tens of thousands star ...
... and hugs close to the Sun, so you see it for a short time in the longer in its group. west after sunset or in the east before sunrise. Jupiter can be out Globular Clusters look like fuzzy balls because they contain all night and always outshines any star. Everyone enjoys its 4 tens of thousands star ...
The Prague Astronomical Clock
... The Position of the Moon Just like the Sun, the Moon slides on its hand so that it always lies on the Zodiac circle. It makes one complete revolution in 24h 50m 28s. The time between two consecutive full moons, a lunar month, is 29½ days. Over this time, the relative positions of the Sun and the Moo ...
... The Position of the Moon Just like the Sun, the Moon slides on its hand so that it always lies on the Zodiac circle. It makes one complete revolution in 24h 50m 28s. The time between two consecutive full moons, a lunar month, is 29½ days. Over this time, the relative positions of the Sun and the Moo ...
astro 001 - courses.psu.edu
... c) they are all circumpolar as observed from Greece d) they can be observed only from Mount Olympus e) space aliens come from a star system located in the middle of the Zodiac 11. The celestial meridian may best be described as __________. a) the great circle on the celestial sphere dividing the sky ...
... c) they are all circumpolar as observed from Greece d) they can be observed only from Mount Olympus e) space aliens come from a star system located in the middle of the Zodiac 11. The celestial meridian may best be described as __________. a) the great circle on the celestial sphere dividing the sky ...
Astro 10 Practice Test 1
... 32. Imagine that you could change the model shown in this picture. Imagine moving Venus’s epicycle so that it’s centered on the Sun, and changing the word `epicycle’ to `orbit’. If you examined Venus through a telescope over a period of time, what would you notice about the appearance of Venus? a. I ...
... 32. Imagine that you could change the model shown in this picture. Imagine moving Venus’s epicycle so that it’s centered on the Sun, and changing the word `epicycle’ to `orbit’. If you examined Venus through a telescope over a period of time, what would you notice about the appearance of Venus? a. I ...
What Is the Solar System? / Why Does the Sun Appear to Move
... A single or complete cycle of an orbital motion ...
... A single or complete cycle of an orbital motion ...
Astro Calendar - Carnegie Science Center
... on April 21 until dawn on April 22. Lyrid meteors can be seen any time after midnight when the constellation Lyra is well above the horizon. The best time to look is from about 2 am until dawn. At that point, the local sky is pointing directly into the meteoroid debris stream, and observers can view ...
... on April 21 until dawn on April 22. Lyrid meteors can be seen any time after midnight when the constellation Lyra is well above the horizon. The best time to look is from about 2 am until dawn. At that point, the local sky is pointing directly into the meteoroid debris stream, and observers can view ...
What`s Up - April 2016
... is 15000 times as luminous as the sun, a rare yellow-white supergiant 313 light years away. If placed at the center of our solar system, its surface would be three quarters of the distance from the centre to the orbit of Mercury, Earth would be global toast, and so would we. Rising in the southeast ...
... is 15000 times as luminous as the sun, a rare yellow-white supergiant 313 light years away. If placed at the center of our solar system, its surface would be three quarters of the distance from the centre to the orbit of Mercury, Earth would be global toast, and so would we. Rising in the southeast ...
43 Astronomy 43.1 Recall that Earth is one of the many planets in
... Objects on Earth cast shadows that help show Earth’s rotation. The angle of the Sun changes the length of an object’s shadow. ● In the morning, the Sun appears low in the sky; objects cast long shadows ● As Earth rotates, the Sun appears higher in the sky, and the shadows get shorter ● At noo ...
... Objects on Earth cast shadows that help show Earth’s rotation. The angle of the Sun changes the length of an object’s shadow. ● In the morning, the Sun appears low in the sky; objects cast long shadows ● As Earth rotates, the Sun appears higher in the sky, and the shadows get shorter ● At noo ...
Lecture 2a
... combined with centuries of data on planetary motions ! formulated complete description of the Solar System that explained/predicted the apparent motion – Unfortunately, the Ptolemy framework was extremely complicated in order to explain retrograde motion. ...
... combined with centuries of data on planetary motions ! formulated complete description of the Solar System that explained/predicted the apparent motion – Unfortunately, the Ptolemy framework was extremely complicated in order to explain retrograde motion. ...
Part II: Ideas in Conflict.
... Do you always see the same constellations at night? How do they change during the year? How do the Sun and Moon move relative to the stars? How do the stars appear to move during the night? Why can’t you see the stars during the day? What if we had no atmosphere? What happens to constellations as yo ...
... Do you always see the same constellations at night? How do they change during the year? How do the Sun and Moon move relative to the stars? How do the stars appear to move during the night? Why can’t you see the stars during the day? What if we had no atmosphere? What happens to constellations as yo ...