US - Real Science
... swallowed a small companion in its past. So what caused the asymmetry and the stellar baby boom? Most of the star formation is taking place in dense gassy regions scattered around the arms. But astronomers simply do not know what is compressing this gas so much that stars are forming at a staggerin ...
... swallowed a small companion in its past. So what caused the asymmetry and the stellar baby boom? Most of the star formation is taking place in dense gassy regions scattered around the arms. But astronomers simply do not know what is compressing this gas so much that stars are forming at a staggerin ...
The star Betelgeuse is about 500 light years away from us. If this star
... a) galaxies were more active in the past and therefore would have collided with each other more frequently b) galaxies were much bigger in the past since they had not contracted completely c) galaxies were closer together in the past because the Universe was smaller ...
... a) galaxies were more active in the past and therefore would have collided with each other more frequently b) galaxies were much bigger in the past since they had not contracted completely c) galaxies were closer together in the past because the Universe was smaller ...
updated
... The blue star in the center of the nebula is the hot carbon core. The green ring is the now ionized outer layers of the star being blown away from the core Structurally the star is schematically represented as follows: ...
... The blue star in the center of the nebula is the hot carbon core. The green ring is the now ionized outer layers of the star being blown away from the core Structurally the star is schematically represented as follows: ...
star
... The main sequence turns out to be a sequence of stellar masses (for almost 90% of the stars) The more massive stars have the more weight and can thus compress their centers to the greater degree, which implies that they are the hotter inside and the better at generating energy from nuclear reactions ...
... The main sequence turns out to be a sequence of stellar masses (for almost 90% of the stars) The more massive stars have the more weight and can thus compress their centers to the greater degree, which implies that they are the hotter inside and the better at generating energy from nuclear reactions ...
E:\2012-2013\SSU\PHS 207spring 2013\3rd test 4
... Why does the average chemical composition of stars now forming differ from that of older stars? The younger stars contain heavier elements created in massive stars and gathered from the supernovae of those stars. The older stars were created before the supernovae released the heavier elements. ...
... Why does the average chemical composition of stars now forming differ from that of older stars? The younger stars contain heavier elements created in massive stars and gathered from the supernovae of those stars. The older stars were created before the supernovae released the heavier elements. ...
the curious incident of the dog in the night-time
... horizon (i.e., the boundary) of the collapsing object curves light so severely it cannot escape. Due to the massive gravitational field the region of space can not be observed, as Christopher states, and so a black hole is formed by its disconnection from the rest of the universe.7 Because astronome ...
... horizon (i.e., the boundary) of the collapsing object curves light so severely it cannot escape. Due to the massive gravitational field the region of space can not be observed, as Christopher states, and so a black hole is formed by its disconnection from the rest of the universe.7 Because astronome ...
Circular ac
... exist on the surface of the planet. It was described as being one of the most Earth-like planets, in terms of size and temperature, yet found.[1][7] It is outside of the zone (around 0.02 AU) where tidal forces from its host star would be ...
... exist on the surface of the planet. It was described as being one of the most Earth-like planets, in terms of size and temperature, yet found.[1][7] It is outside of the zone (around 0.02 AU) where tidal forces from its host star would be ...
Ch 20 Stellar Evolution
... Learning Astronomy from History Sirius is the brightest star in the northern sky and has been recorded throughout history. But there is a mystery! All sightings recorded between about 100 BCE and 200 CE describe it as being red—it is now blue-white. Why? Could there have been an intervening dust clo ...
... Learning Astronomy from History Sirius is the brightest star in the northern sky and has been recorded throughout history. But there is a mystery! All sightings recorded between about 100 BCE and 200 CE describe it as being red—it is now blue-white. Why? Could there have been an intervening dust clo ...
to get the file
... the Celestron, but we could not track many of the stars on our bright star list due to the fact that they either rose after dawn or set before dusk ...
... the Celestron, but we could not track many of the stars on our bright star list due to the fact that they either rose after dawn or set before dusk ...
Mark Rubin
... to primordial, H-based molecules only which are able to cool the gas down to temperatures ~ 102 K. • Therefore the mass of primordial stars should be relatively large and their spectrum is commonly referred to as ‘topheavy’ initial mass function. These features imply very short lifetimes (up to ~106 ...
... to primordial, H-based molecules only which are able to cool the gas down to temperatures ~ 102 K. • Therefore the mass of primordial stars should be relatively large and their spectrum is commonly referred to as ‘topheavy’ initial mass function. These features imply very short lifetimes (up to ~106 ...
Constellations
... Hydra’s name in Latin means “water snake” referring to the constellations shape, witch resembles a twisting snake. ...
... Hydra’s name in Latin means “water snake” referring to the constellations shape, witch resembles a twisting snake. ...
Project Descriptions - UCI Physics and Astronomy
... where θ is the angular size of an object measured in radians, D is the physical diameter of an object, and d is the object’s distance. These unit conversions are also helpful: 2 π radian = 360 degree, and 1 degree = 60 arcminute. How does the maximum angular distance between the moons and Saturn com ...
... where θ is the angular size of an object measured in radians, D is the physical diameter of an object, and d is the object’s distance. These unit conversions are also helpful: 2 π radian = 360 degree, and 1 degree = 60 arcminute. How does the maximum angular distance between the moons and Saturn com ...
The Universe Section 1
... • We learn about stars by studying energy. – Stars produce a full range of electromagnetic radiation, from high-energy X-rays to low-energy radio waves. – Scientists use optical telescopes to study visible light and radio telescopes to study radio waves emitted from astronomical objects. – Earth’s a ...
... • We learn about stars by studying energy. – Stars produce a full range of electromagnetic radiation, from high-energy X-rays to low-energy radio waves. – Scientists use optical telescopes to study visible light and radio telescopes to study radio waves emitted from astronomical objects. – Earth’s a ...
The Oort Cloud
... Pushed out by large molecular clouds, passing stars, or tidal interactions with Milky Way's disc 5 of these enter inner solar system per year It takes thousands of years for them to orbit the sun ...
... Pushed out by large molecular clouds, passing stars, or tidal interactions with Milky Way's disc 5 of these enter inner solar system per year It takes thousands of years for them to orbit the sun ...
DTU_9e_ch12
... can initially be isolated but, as they age, grow and exchange mass. Such mass exchange leads to different fates than if the same stars had evolved in isolation. ...
... can initially be isolated but, as they age, grow and exchange mass. Such mass exchange leads to different fates than if the same stars had evolved in isolation. ...
Astronomy and the Coal Age of Alabama
... space we look, the farther back in time we see. The Minkin site is 310 Myr old. Sunlight that reflected off the trackmakers on a sunny day now is 310 million light years away ...
... space we look, the farther back in time we see. The Minkin site is 310 Myr old. Sunlight that reflected off the trackmakers on a sunny day now is 310 million light years away ...
Perseus (constellation)
Perseus, named after the Greek mythological hero Perseus, is a constellation in the northern sky. It was one of 48 listed by the 2nd-century astronomer Ptolemy and among the 88 modern constellations defined by the International Astronomical Union (IAU). It is located in the northern celestial hemisphere near several other constellations named after legends surrounding Perseus, including Andromeda to the west and Cassiopeia to the north. Perseus is also bordered by Aries and Taurus to the south, Auriga to the east, Camelopardalis to the north, and Triangulum to the west.The galactic plane of the Milky Way passes through Perseus but is mostly obscured by molecular clouds. The constellation's brightest star is the yellow-white supergiant Alpha Persei (also called Mirfak), which shines at magnitude 1.79. It and many of the surrounding stars are members of an open cluster known as the Alpha Persei Cluster. The best-known star, however, is Algol (Beta Persei), linked with ominous legends because of its variability, which is noticeable to the naked eye. Rather than being an intrinsically variable star, it is an eclipsing binary. Other notable star systems in Perseus include X Persei, a binary system containing a neutron star, and GK Persei, a nova that peaked at magnitude 0.2 in 1901. The Double Cluster, comprising two open clusters quite near each other in the sky, was known to the ancient Chinese. The constellation gives its name to the Perseus Cluster (Abell 426), a massive galaxy cluster located 250 million light-years from Earth. It hosts the radiant of the annual Perseids meteor shower—one of the most prominent meteor showers in the sky.