Sirius Astronomer - Orange County Astronomers
... Later, I learned that the big ribbon of light was my own galaxy, the Milky Way. It wasn’t until years later when someone with more knowledge about the heavens pointed out a fuzzy blob in the northeastern sky. It was the Andromeda Galaxy (M31). Putting binoculars on it confirmed the spiral galaxy sha ...
... Later, I learned that the big ribbon of light was my own galaxy, the Milky Way. It wasn’t until years later when someone with more knowledge about the heavens pointed out a fuzzy blob in the northeastern sky. It was the Andromeda Galaxy (M31). Putting binoculars on it confirmed the spiral galaxy sha ...
The Case against Copernicus
... large” because we can detect no diurnal parallax in them—no noticeable alterations in their positions or appearances caused by the changing angles and distances between an Earth-bound observer and those stars as they pass from the horizon, to overhead, to the horizon. The corollary of this observati ...
... large” because we can detect no diurnal parallax in them—no noticeable alterations in their positions or appearances caused by the changing angles and distances between an Earth-bound observer and those stars as they pass from the horizon, to overhead, to the horizon. The corollary of this observati ...
The Sky is Our Laboratory
... galaxies? 16. How many different types of galaxies are there? • It is called the `bulge’ and it consists of stars, generally fairly old. Most galaxies have bulges.. For instance, elliptical galaxies could be considered to consist entirely of a `bulge’. Most spiral galaxies have bulges. There is a (n ...
... galaxies? 16. How many different types of galaxies are there? • It is called the `bulge’ and it consists of stars, generally fairly old. Most galaxies have bulges.. For instance, elliptical galaxies could be considered to consist entirely of a `bulge’. Most spiral galaxies have bulges. There is a (n ...
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... The diagram • Hot, massive stars end up in the upper left; cool, low mass stars end up in the lower right. • In addition, there are poorly populated areas. One, in the lower left, is populated by hot, very tiny stars (white dwarfs). Another, in the upper right, is populated by giant stars on the gi ...
... The diagram • Hot, massive stars end up in the upper left; cool, low mass stars end up in the lower right. • In addition, there are poorly populated areas. One, in the lower left, is populated by hot, very tiny stars (white dwarfs). Another, in the upper right, is populated by giant stars on the gi ...
Name
... E) three helium nuclei into one carbon nucleus plus energy 31) A white dwarf is ____. A) a precursor to a black hole. B) what most stars become when they die. C) a brown dwarf that has exhausted its fuel for nuclear fusion. D) an early stage of a neutron star. E) a protostar that gives off most of i ...
... E) three helium nuclei into one carbon nucleus plus energy 31) A white dwarf is ____. A) a precursor to a black hole. B) what most stars become when they die. C) a brown dwarf that has exhausted its fuel for nuclear fusion. D) an early stage of a neutron star. E) a protostar that gives off most of i ...
Astronomy Study Guide
... 13. What other kinds of radiation are detected by telescopes? Infrared radiation, ultraviolet radiation, Xrays, and gamma rays 14. A building that contains one or more telescopes is called a(n) observatory 15. Why can the Hubble Space Telescope make images in visible light that are much better than ...
... 13. What other kinds of radiation are detected by telescopes? Infrared radiation, ultraviolet radiation, Xrays, and gamma rays 14. A building that contains one or more telescopes is called a(n) observatory 15. Why can the Hubble Space Telescope make images in visible light that are much better than ...
Society News - Bristol Astronomical Society
... across most of the world. The word Equinox is derived from the Latin words ‘aequus’ (equal) and ‘nox’ (night). The name Equinox is often used to refer to the whole day but to astronomers it refers to the actual time the Sun is directly over the equator. Equinox also refers to the points on the celes ...
... across most of the world. The word Equinox is derived from the Latin words ‘aequus’ (equal) and ‘nox’ (night). The name Equinox is often used to refer to the whole day but to astronomers it refers to the actual time the Sun is directly over the equator. Equinox also refers to the points on the celes ...
Types of Galaxies - Spring Branch ISD
... 13. What other kinds of radiation are detected by telescopes? Infrared radiation, ultraviolet radiation, Xrays, and gamma rays 14. A building that contains one or more telescopes is called a(n) observatory 15. Why can the Hubble Space Telescope make images in visible light that are much better than ...
... 13. What other kinds of radiation are detected by telescopes? Infrared radiation, ultraviolet radiation, Xrays, and gamma rays 14. A building that contains one or more telescopes is called a(n) observatory 15. Why can the Hubble Space Telescope make images in visible light that are much better than ...
Microsoft Word 97
... 4. What does our galaxy look like from the top down? ______________________________________ 5. Where is Earth in the Milky Way? ____________________________________________________ 6. How long does it take for us to go around the Milky Way? _________________________________ 7. What are the 2 galaxie ...
... 4. What does our galaxy look like from the top down? ______________________________________ 5. Where is Earth in the Milky Way? ____________________________________________________ 6. How long does it take for us to go around the Milky Way? _________________________________ 7. What are the 2 galaxie ...
Some Important Introductory Concepts
... “centimeters” or “inches” for everyday objects, “light years” or “parsecs” for stars, “megaparsecs” for galaxies. This is really nothing--you just have to get used to it! Keep thinking about it for a while and soon it will be second nature. It will help if you associate each new unit with some obj ...
... “centimeters” or “inches” for everyday objects, “light years” or “parsecs” for stars, “megaparsecs” for galaxies. This is really nothing--you just have to get used to it! Keep thinking about it for a while and soon it will be second nature. It will help if you associate each new unit with some obj ...
Wazzat Mean - Peterborough Astronomical Association
... and lets you track objects as Earth rotates. A sturdy, vibration-free mount is every bit as important as the telescope’s optics. A mount’s top, or head, can be either alt-azimuth (turning side to side, up and down) or equatorial (turning parallel to the celestial coordinate system). “Go To” mounts c ...
... and lets you track objects as Earth rotates. A sturdy, vibration-free mount is every bit as important as the telescope’s optics. A mount’s top, or head, can be either alt-azimuth (turning side to side, up and down) or equatorial (turning parallel to the celestial coordinate system). “Go To” mounts c ...
The star is born
... The proto-star-phase. Protostars are still in the process of attaining star-like structure. Protostars are accompanied by strong outflows and jets, and are surrounded by accretion disks. The disk is pouring more mass onto the protostar. The protostar is hidden within the cocoon of the birth cloud an ...
... The proto-star-phase. Protostars are still in the process of attaining star-like structure. Protostars are accompanied by strong outflows and jets, and are surrounded by accretion disks. The disk is pouring more mass onto the protostar. The protostar is hidden within the cocoon of the birth cloud an ...
About SDSS - Astro Projects
... The Sloan Digital Sky Survey (SDSS) telescope in New Mexico, for example, has a main mirror 2.5 metres in diameter, and using its standard exposure time of 50 seconds, it can image objects as faint as 'magnitude' 22 in the visible part of the spectrum. [For those who are unfamiliar with the idea of ...
... The Sloan Digital Sky Survey (SDSS) telescope in New Mexico, for example, has a main mirror 2.5 metres in diameter, and using its standard exposure time of 50 seconds, it can image objects as faint as 'magnitude' 22 in the visible part of the spectrum. [For those who are unfamiliar with the idea of ...
1” “Sky-Notes” of the Open University Astronomy Club. October 2005
... reveals more and more detail although increasingly smaller areas of the galaxy fill the eyepiece. 8" telescopes should reveal NGC206 as a hazy patch. It is a large area of star formation. 12" scopes will reveal one or two of the globular clusters. NGC404 (11.9) lg. Located 6' NW of And. The 2nd ma ...
... reveals more and more detail although increasingly smaller areas of the galaxy fill the eyepiece. 8" telescopes should reveal NGC206 as a hazy patch. It is a large area of star formation. 12" scopes will reveal one or two of the globular clusters. NGC404 (11.9) lg. Located 6' NW of And. The 2nd ma ...
Hipparcos
Hipparcos was a scientific satellite of the European Space Agency (ESA), launched in 1989 and operated until 1993. It was the first space experiment devoted to precision astrometry, the accurate measurement of the positions of celestial objects on the sky. This permitted the accurate determination of proper motions and parallaxes of stars, allowing a determination of their distance and tangential velocity. When combined with radial-velocity measurements from spectroscopy, this pinpointed all six quantities needed to determine the motion of stars. The resulting Hipparcos Catalogue, a high-precision catalogue of more than 118,200 stars, was published in 1997. The lower-precision Tycho Catalogue of more than a million stars was published at the same time, while the enhanced Tycho-2 Catalogue of 2.5 million stars was published in 2000. Hipparcos ' follow-up mission, Gaia, was launched in 2013.The word ""Hipparcos"" is an acronym for High precision parallax collecting satellite and also a reference to the ancient Greek astronomer Hipparchus of Nicaea, who is noted for applications of trigonometry to astronomy and his discovery of the precession of the equinoxes.