The Evening Sky Map
... Conjunction – An alignment of two celestial bodies such that they present the least angular separation as viewed from Earth. Constellation – A defined area of the sky containing a star pattern. Diffuse Nebula – A cloud of gas illuminated by nearby stars. Double Star – Two stars that appear close to ...
... Conjunction – An alignment of two celestial bodies such that they present the least angular separation as viewed from Earth. Constellation – A defined area of the sky containing a star pattern. Diffuse Nebula – A cloud of gas illuminated by nearby stars. Double Star – Two stars that appear close to ...
Black Holes S.Chandrasekhar (1910-1995) March 27
... because nothing can go faster than light. No escape means there is no more contact with something that falls in. It increases the hole mass, changes the spin or charge, but otherwise loses its identity. ...
... because nothing can go faster than light. No escape means there is no more contact with something that falls in. It increases the hole mass, changes the spin or charge, but otherwise loses its identity. ...
DTU 8e Chap 11 Characterizing Stars
... Determining stellar distances from Earth is the first step to understanding the nature of the stars. Distances to the nearer stars can be determined by stellar parallax, which is the apparent shift of a star’s location against the background stars while Earth moves along its orbit around the Sun. Th ...
... Determining stellar distances from Earth is the first step to understanding the nature of the stars. Distances to the nearer stars can be determined by stellar parallax, which is the apparent shift of a star’s location against the background stars while Earth moves along its orbit around the Sun. Th ...
Planetarium Key Points
... Constellation shape change with epoch and observer position; shape is not for ever becouse of star’s proper motion, but no detectable change during human life at naked eye Constellations and asterisms; we use structures invented by assirian priests in XII century BC: Orion, Ursa Major, Ursa Mino ...
... Constellation shape change with epoch and observer position; shape is not for ever becouse of star’s proper motion, but no detectable change during human life at naked eye Constellations and asterisms; we use structures invented by assirian priests in XII century BC: Orion, Ursa Major, Ursa Mino ...
OSP2016Level 3 Map - Oregon Star Party
... What is it? V404 Cyg is a black hole (12+/- 3 solar masses) with late K or early G type stellar companion that’s slightly smaller than the Sun, orbiting each other in less than 6.5 days. They are approximately 7800 light years away. Why you want to see it: The stellar companion is distorted into a ...
... What is it? V404 Cyg is a black hole (12+/- 3 solar masses) with late K or early G type stellar companion that’s slightly smaller than the Sun, orbiting each other in less than 6.5 days. They are approximately 7800 light years away. Why you want to see it: The stellar companion is distorted into a ...
the southern astronomer
... neighbouring constellation of Canes Venatici, a globular cluster, M3. This object is considered to be one of the finest northern sky globular clusters and can be easily made out in a pair of binoculars. ...
... neighbouring constellation of Canes Venatici, a globular cluster, M3. This object is considered to be one of the finest northern sky globular clusters and can be easily made out in a pair of binoculars. ...
Slide 1
... This reduces the electron degeneracy pressure further and accelerates the collapse. In less than a second, the core collapses into a ball of neutrons only about 10 km in radius -- a neutron star. A neutron star is supported by gravity against a different kind of pressure, neutron degeneracy pressure ...
... This reduces the electron degeneracy pressure further and accelerates the collapse. In less than a second, the core collapses into a ball of neutrons only about 10 km in radius -- a neutron star. A neutron star is supported by gravity against a different kind of pressure, neutron degeneracy pressure ...
Modified True/False - Indicate whether the statement is true or false
... ____ 21. HS-ESS1-1 Which of the following stages is the earliest in the development of a star? a. Nebula c. Neutron star b. Protostar d. Giant ____ 22. HS-ESS1-1 All stars, including the Sun, have the following identical composition: a. 73 percent hydrogen; 25 percent helium; and 2 percent oxygen b. ...
... ____ 21. HS-ESS1-1 Which of the following stages is the earliest in the development of a star? a. Nebula c. Neutron star b. Protostar d. Giant ____ 22. HS-ESS1-1 All stars, including the Sun, have the following identical composition: a. 73 percent hydrogen; 25 percent helium; and 2 percent oxygen b. ...
The Ring Nebula, NGC 6720
... that is a favorite of both amateur and professional astronomers alike. Located in the constellation Lyra (the lyre, or harp), the nebula is situated within the famous Summer Triangle of bright stars (Vega, Altair, and Deneb) for northern hemisphere observers. At a distance of 2,300 light-years, and ...
... that is a favorite of both amateur and professional astronomers alike. Located in the constellation Lyra (the lyre, or harp), the nebula is situated within the famous Summer Triangle of bright stars (Vega, Altair, and Deneb) for northern hemisphere observers. At a distance of 2,300 light-years, and ...
MS Word version
... Question 6: Set the simulator up for an observer at the south pole. Make sure that there are still stars (~20) in the simulator and click animate continuously. Describe the circumpolar stars seen from the south pole. ...
... Question 6: Set the simulator up for an observer at the south pole. Make sure that there are still stars (~20) in the simulator and click animate continuously. Describe the circumpolar stars seen from the south pole. ...
SMMP_BISANA - Infinity and Beyond
... stage, the fusion between astronomy and mythology is so complete that no further distinction is made between them"--the stars were no longer merely identified with certain gods or heroes, but actually were perceived as divine(Seznec, 37-40). ...
... stage, the fusion between astronomy and mythology is so complete that no further distinction is made between them"--the stars were no longer merely identified with certain gods or heroes, but actually were perceived as divine(Seznec, 37-40). ...
sa`d al-malik - WordPress.com
... decided that he would make a perfect cup-bearer. The story then differs - one version telling how Zeus sent his pet eagle, Aquila, to carry Ganymede to Olympus, another that it was Zeus, himself, disguised as an eagle, who swept up the youth and carried him to the home of the gods. In either case, o ...
... decided that he would make a perfect cup-bearer. The story then differs - one version telling how Zeus sent his pet eagle, Aquila, to carry Ganymede to Olympus, another that it was Zeus, himself, disguised as an eagle, who swept up the youth and carried him to the home of the gods. In either case, o ...
English Summary
... the nebulous objects in the Messier Catalogue could be resolved into stars. We know now that these objects are galaxies. He called the others Planetary Nebulae because he found them similar in appearance to Uranus, the planet he had recently discovered. It took much longer to understand that these o ...
... the nebulous objects in the Messier Catalogue could be resolved into stars. We know now that these objects are galaxies. He called the others Planetary Nebulae because he found them similar in appearance to Uranus, the planet he had recently discovered. It took much longer to understand that these o ...
at A-stars?
... brightness because they cannot achieve proper balance between power welling up from the core and power radiated from the surface • Most pulsating variable stars inhabit an instability strip on the H-R diagram • The most luminous ones are known as Cepheid variables: important for distance measureme ...
... brightness because they cannot achieve proper balance between power welling up from the core and power radiated from the surface • Most pulsating variable stars inhabit an instability strip on the H-R diagram • The most luminous ones are known as Cepheid variables: important for distance measureme ...
Stellar balancing act — dynamic equilibrium. A star spends most of
... Standing shock – a strong pressure wave that forms due to neutron-star bounce, but which stalls a certain distance from the neutron star as outer material rains down on it. All core-collapse supernovae measured to date, Type Ib, Ic, and II, are not spherical. They may be “football” shaped or “pancak ...
... Standing shock – a strong pressure wave that forms due to neutron-star bounce, but which stalls a certain distance from the neutron star as outer material rains down on it. All core-collapse supernovae measured to date, Type Ib, Ic, and II, are not spherical. They may be “football” shaped or “pancak ...
Galaxies - Wallkill Valley Regional High School
... Galaxies contain millions or billions of stars held together by gravity Gravity holds galaxies together in clusters Clusters of galaxies can form even larger groups called superclusters How do we see galaxies? We can see our own Milky Way without the use of a telescope Spyglasses let us see further ...
... Galaxies contain millions or billions of stars held together by gravity Gravity holds galaxies together in clusters Clusters of galaxies can form even larger groups called superclusters How do we see galaxies? We can see our own Milky Way without the use of a telescope Spyglasses let us see further ...
Sky Diary - Society for Popular Astronomy
... on 15 October. This means that both planets are visible during nearly all of the available darkness on any night in the period, with Neptune up first and Uranus following on. Neptune will be a telescopic object, little more than 2 seconds of arc in apparent size, shining at a faint +7.8 magnitude ag ...
... on 15 October. This means that both planets are visible during nearly all of the available darkness on any night in the period, with Neptune up first and Uranus following on. Neptune will be a telescopic object, little more than 2 seconds of arc in apparent size, shining at a faint +7.8 magnitude ag ...
Cygnus (constellation)
Cygnus /ˈsɪɡnəs/ is a northern constellation lying on the plane of the Milky Way, deriving its name from the Latinized Greek word for swan. The swan is one of the most recognizable constellations of the northern summer and autumn, it features a prominent asterism known as the Northern Cross (in contrast to the Southern Cross). Cygnus was among the 48 constellations listed by the 2nd century astronomer Ptolemy, and it remains one of the 88 modern constellations.Cygnus contains Deneb, one of the brightest stars in the night sky and one corner of the Summer Triangle, as well as some notable X-ray sources and the giant stellar association of Cygnus OB2. One of the stars of this association, NML Cygni, is one of the largest stars currently known. The constellation is also home to Cygnus X-1, a distant X-ray binary containing a supergiant and unseen massive companion that was the first object widely held to be a black hole. Many star systems in Cygnus have known planets as a result of the Kepler Mission observing one patch of the sky, the patch is the area around Cygnus. In addition, most of the eastern part of Cygnus is dominated by the Hercules–Corona Borealis Great Wall, a giant galaxy filament that is the largest known structure in the observable universe; covering most of the northern sky.