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Apr 2017 - Bays Mountain Park
... The planetary spotlight shines brightest on Jupiter this month. Jupiter reaches opposition on the 7th, the position in it’s orbit when it is directly opposite the Sun from the Earth. At opposition, it will be just 414 million miles from Earth. This opposition, however, occurs close to Jupiter being ...
... The planetary spotlight shines brightest on Jupiter this month. Jupiter reaches opposition on the 7th, the position in it’s orbit when it is directly opposite the Sun from the Earth. At opposition, it will be just 414 million miles from Earth. This opposition, however, occurs close to Jupiter being ...
Today in Astronomy 102: electron degeneracy pressure and white
... q For stars heavier than about a solar mass, Stoner (prompted, but incorrectly, by Anderson) noticed from his theory that the confinement imparted so much energy to the electrons in the center of the star that the electron speeds are close to the speed of light. q Fowler’s theory of degenerate matte ...
... q For stars heavier than about a solar mass, Stoner (prompted, but incorrectly, by Anderson) noticed from his theory that the confinement imparted so much energy to the electrons in the center of the star that the electron speeds are close to the speed of light. q Fowler’s theory of degenerate matte ...
Stars and Galaxies - La Salle Elementary Public Schools No 122
... What do you think? Before you begin, decide if you agree or disagree with each of these statements. As you view this presentation, see if you change your mind about any of the statements. ...
... What do you think? Before you begin, decide if you agree or disagree with each of these statements. As you view this presentation, see if you change your mind about any of the statements. ...
5 Sun`s Motion
... Throughout year, sun slowly changes its north/south position. 1. Summer Solstice (June 21st) : Sun 23.5° above (north of) celestial equator 2. Autumnal Equinox (Sept. 21st): Sun on celestial equator 3. Winter Solstice (Dec. 21st): Sun 23.5° below (south of) ...
... Throughout year, sun slowly changes its north/south position. 1. Summer Solstice (June 21st) : Sun 23.5° above (north of) celestial equator 2. Autumnal Equinox (Sept. 21st): Sun on celestial equator 3. Winter Solstice (Dec. 21st): Sun 23.5° below (south of) ...
Study Guide for 3RD Astronomy Exam
... List the mass limits of stars and explain why these limits apply. Describe the processes and stages of star formation from a giant molecular cloud to an open cluster. Identify in a photograph the following objects: a GMC, Bok Globule, OB Association, HII region, Open Cluster Describe the t-Tauri win ...
... List the mass limits of stars and explain why these limits apply. Describe the processes and stages of star formation from a giant molecular cloud to an open cluster. Identify in a photograph the following objects: a GMC, Bok Globule, OB Association, HII region, Open Cluster Describe the t-Tauri win ...
Night Sky Course Stars and Star Clusters within the
... Globular Clusters: A group of 100s or thousands of stars bound together in a densely packed spherical swarm of stars orbiting around the center of the Milky Way Galaxy. (Other galaxies have globular Clusters too). Stars in globular clusters are extremely old. They may have been the first parts of th ...
... Globular Clusters: A group of 100s or thousands of stars bound together in a densely packed spherical swarm of stars orbiting around the center of the Milky Way Galaxy. (Other galaxies have globular Clusters too). Stars in globular clusters are extremely old. They may have been the first parts of th ...
9 spectroscopic parallax
... We can measure apparent magnitude and spectral type. The main sequence lets us infer absolute magnitude from spectral type. Comparing apparent magnitude to absolute magnitude gives us distance. ...
... We can measure apparent magnitude and spectral type. The main sequence lets us infer absolute magnitude from spectral type. Comparing apparent magnitude to absolute magnitude gives us distance. ...
Shining Light on the Stars: The Hertzsprung-Russell
... distance of just over 4.2 light years, or 24 trillion miles, this star is our closest stellar neighbor. The surface of Proxima Centauri appears more mottled than our Sun because red dwarf stars have larger and more star spots. If you look off to the right you can see two other stars nearby. Proxima ...
... distance of just over 4.2 light years, or 24 trillion miles, this star is our closest stellar neighbor. The surface of Proxima Centauri appears more mottled than our Sun because red dwarf stars have larger and more star spots. If you look off to the right you can see two other stars nearby. Proxima ...
CS3_Ch 3 - Leon County Schools
... What do you think? Before you begin, decide if you agree or disagree with each of these statements. As you view this presentation, see if you change your mind about any of the statements. ...
... What do you think? Before you begin, decide if you agree or disagree with each of these statements. As you view this presentation, see if you change your mind about any of the statements. ...
PHYS3380_110415_bw - The University of Texas at Dallas
... determinations that worked out to distances beyond our Milky Way. Cepheids are up to ~ 40,000 times more luminous than our sun can be identified in other galaxies - Edwin Hubble first identified some Cepheids in the Andromeda galaxy, thus proving its extragalactic nature ...
... determinations that worked out to distances beyond our Milky Way. Cepheids are up to ~ 40,000 times more luminous than our sun can be identified in other galaxies - Edwin Hubble first identified some Cepheids in the Andromeda galaxy, thus proving its extragalactic nature ...
1705 Star Charts
... the horizon, is orange Arcturus, the brightest star in the northern sky. As the sky darkens Sirius, the brightest of all the stars, appears midway down the northwest sky. Canopus, second brightest, is southwest of overhead. Midway up the southeast sky are 'The Pointers', Beta and Alpha Centauri. Wel ...
... the horizon, is orange Arcturus, the brightest star in the northern sky. As the sky darkens Sirius, the brightest of all the stars, appears midway down the northwest sky. Canopus, second brightest, is southwest of overhead. Midway up the southeast sky are 'The Pointers', Beta and Alpha Centauri. Wel ...
The Milky Way
... With ground-based telescopes, we can measure parallaxes p ≥ 0.02 arc sec => d ≤ 50 pc ...
... With ground-based telescopes, we can measure parallaxes p ≥ 0.02 arc sec => d ≤ 50 pc ...
Archaeology of the Milky Way - Max-Planck
... Milky Way. On the contrary: these processes are evident even now. Just over ten years ago, astronomers in Heidelberg investigated a small globular star cluster 75,000 light-years away called Palomar 5. They discovered that it orbits the Milky Way, passing through ...
... Milky Way. On the contrary: these processes are evident even now. Just over ten years ago, astronomers in Heidelberg investigated a small globular star cluster 75,000 light-years away called Palomar 5. They discovered that it orbits the Milky Way, passing through ...
Week 3 - OSU Astronomy
... Consider the enormity of volumes in space • If we have a volume of 1 cubic parsec, and a density of 1 H atom per cubic cm, it will contain 1/40 the mass of the sun • Or, 1 solar mass in a cube 3.4 parsec on a side • Or, if the density is 40 per cubic cm, one cubic parsec will have ...
... Consider the enormity of volumes in space • If we have a volume of 1 cubic parsec, and a density of 1 H atom per cubic cm, it will contain 1/40 the mass of the sun • Or, 1 solar mass in a cube 3.4 parsec on a side • Or, if the density is 40 per cubic cm, one cubic parsec will have ...
HR Diagram Explorer Worksheet
... Open the HR Diagram Explorer. Begin by familiarizing yourself with the capabilities of the HertzsprungRussell Diagram Explorer through experimentation. An actual HR Diagram is provided in the upper right panel with an active location indicated by a red x. This active location can be dragged around ...
... Open the HR Diagram Explorer. Begin by familiarizing yourself with the capabilities of the HertzsprungRussell Diagram Explorer through experimentation. An actual HR Diagram is provided in the upper right panel with an active location indicated by a red x. This active location can be dragged around ...
Lecture 2
... Hint #1: how many degrees long is the orange arc, the distance from the celestial equator to the horizon? Start by asking what the length of the pink arc is? 36 degrees Now what is the sum of the pink plus orange arcs? (What is the distance in degrees from zenith to horizon?) 90 degrees So the answe ...
... Hint #1: how many degrees long is the orange arc, the distance from the celestial equator to the horizon? Start by asking what the length of the pink arc is? 36 degrees Now what is the sum of the pink plus orange arcs? (What is the distance in degrees from zenith to horizon?) 90 degrees So the answe ...
North Celestial Pole
... different units are used. Instead of 360°, a circle is broken into 24 hours of right ascension. So, 360° = 24 h R.A., 15° = 1 h R.A., and 1° = 4 min R.A. Note that hours of right ascension is a unit of angle, not time, although there is an obvious connection due to the daily rotation of the celestia ...
... different units are used. Instead of 360°, a circle is broken into 24 hours of right ascension. So, 360° = 24 h R.A., 15° = 1 h R.A., and 1° = 4 min R.A. Note that hours of right ascension is a unit of angle, not time, although there is an obvious connection due to the daily rotation of the celestia ...
γ The potential for intensity interferometry with -ray telescope arrays
... Abstract. Intensity interferometry exploits a quantum optical effect in order to measure objects with extremely small angular scales. The first experiment to use this technique was the Narrabri intensity interferometer, which was successfully used in the 1970s to measure 32 stellar diameters at opti ...
... Abstract. Intensity interferometry exploits a quantum optical effect in order to measure objects with extremely small angular scales. The first experiment to use this technique was the Narrabri intensity interferometer, which was successfully used in the 1970s to measure 32 stellar diameters at opti ...
Week 2
... Thought Question: You go out tonight (Jan. 28) and see a bright star in the constellation Cancer to the south at midnight. One week later at midnight this same star … A. will be somewhat southwest. B. will again be due south. C. will be somewhat southeast. D. won’t be visible (below the horizon). ...
... Thought Question: You go out tonight (Jan. 28) and see a bright star in the constellation Cancer to the south at midnight. One week later at midnight this same star … A. will be somewhat southwest. B. will again be due south. C. will be somewhat southeast. D. won’t be visible (below the horizon). ...
Bonus Article: Get Real About Astrology
... experience, correlations have, and are, being made between the changes taking place in the solar system and interpretation of those changes – with the outcome that a moment in time can therefore be interpreted with good reliability. It also matters little whether it is the birth of a person or the l ...
... experience, correlations have, and are, being made between the changes taking place in the solar system and interpretation of those changes – with the outcome that a moment in time can therefore be interpreted with good reliability. It also matters little whether it is the birth of a person or the l ...
The Celestial Sphere
... First Point of Aries (Υ) The point on the celestial sphere where the ecliptic cuts the equinoctial when the sun just passes the equinoctial from south to north, also known as the vernal equinox position of the sun, which occurs on 21st of March. First Point of Libra The point on the celestial sph ...
... First Point of Aries (Υ) The point on the celestial sphere where the ecliptic cuts the equinoctial when the sun just passes the equinoctial from south to north, also known as the vernal equinox position of the sun, which occurs on 21st of March. First Point of Libra The point on the celestial sph ...
Constellation
![](https://commons.wikimedia.org/wiki/Special:FilePath/Orion_constellation_Hevelius.jpg?width=300)
In modern astronomy, a constellation is a specific area of the celestial sphere as defined by the International Astronomical Union (IAU). These areas had their origins in Western-traditional asterisms from which the constellations take their names. There are 88 officially recognized constellations, covering the entire sky.Thus, any given point in a celestial coordinate system can unambiguously be assigned to a constellation. It is usual in astronomy to give the constellation in which a given object is found along with its coordinates in order to convey a rough idea in which part of the sky it is located. For example, saying the Horsehead Nebula is near Orion's Belt in the constellation Orion immediately locates it just south of the ecliptic and conveys that it is best observable in winter from the Northern Hemisphere.