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Fastest star leaving our galaxy was blasted out by a supernova
Fastest star leaving our galaxy was blasted out by a supernova
http://arstechnica.com/science/2015/...y-a-supernova/ Most of the stars in our galaxy perform an orderly orbit around the galactic core. But, in recent years, researchers have discovered a class of stars that are moving remarkably quickly, in many cases fast enough to have achieved escape velocity—they'll eventually leave the Milky Way for intergalactic space. What can account for a star moving at nearly 1,000 kilometers a second? One model involves our galaxy's supermassive black hole. When a binary star system gets drawn close to it, orbital interactions can leave one member of the binary orbiting the black hole, while slingshotting the other out of the system at high velocities. Several of the hypervelocity stars can have their paths traced back to the galactic core, providing support for this model. But apparently not all. Researchers have revisited a hypervelocity star called US 708 and found that it's both the fastest moving star we've seen in our galaxy and that it didn't originate in the galactic core. Instead, the properties of the star suggest that it was blasted to its current speed by what's called a double-detonation supernova. US 708 was first recognized as a hypervelocity star back in 2005. It's part of an unusual class of stars called hot subdwarfs. These are the helium-burning former cores of red giants, left over after all the hydrogen has been stripped off. The process of stripping them leaves them low mass (about half the mass of the Sun) and spins them up to high rotational speeds. -- sci.physics is an unmoderated newsgroup dedicated to the discussion of physics, news from the physics community, and physics-related social issues. |
#2
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Fastest star leaving our galaxy was blasted out by a supernova
On Tuesday, March 10, 2015 at 3:39:16 PM UTC, Sam Wormley wrote:
Fastest star leaving our galaxy was blasted out by a supernova http://arstechnica.com/science/2015/...y-a-supernova/ This is truly desperate pseudo-science which is obscuring productive research. https://www.nav.no/no/NAV+og+samfunn...i+folketrygden It is truly amazing that the solar system's galactic orbital motion is ignored when looking at variable orbital speeds of planets as they move part of their orbits with the Sun in our galactic orbital motion and part of their orbits moving in the opposite direction. It is though like magnetic deflection as a large scale analogy but this is what is supposed to occupy empiricists as I rarely stray into this area of research. |
#3
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Fastest star leaving our galaxy was blasted out by a supernova
On Tuesday, March 10, 2015 at 12:23:54 PM UTC-7, oriel36 wrote:
It is truly amazing that the solar system's galactic orbital motion is ignored when looking at variable orbital speeds of planets as they move part of their orbits with the Sun in our galactic orbital motion and part of their orbits moving in the opposite direction. Boy, has your 'intuitive intelligence' failed you once again. The Sun, along with its planets and other orbiting bodies, travel at an average speed of 828,000 km/h (230 km/s) within its trajectory around the galactic center.... http://en.wikipedia.org/wiki/Galactic_year .... whereas the fastest planet, Mercury, has an average orbital speed of only 47.362 km/s, with virtually everything else in the solar system moving somewhat slower. http://en.wikipedia.org/wiki/Mercury_(planet) In other words, with respect to the galactic center, Mercury moves 17,000 times faster than it moves with respect to the Sun... not even worth talking about! The solar system's galactic orbital motion is mostly ignored for good reason... |
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Fastest star leaving our galaxy was blasted out by a supernova
On Tuesday, March 10, 2015 at 12:23:54 PM UTC-7, oriel36 wrote:
It is truly amazing that the solar system's galactic orbital motion is ignored when looking at variable orbital speeds of planets as they move part of their orbits with the Sun in our galactic orbital motion and part of their orbits moving in the opposite direction. Boy, has your 'intuitive intelligence' failed you once again. The Sun, along with its planets and other orbiting bodies, travel at an average speed of 828,000 km/h (230 km/s) within its trajectory around the galactic center.... http://en.wikipedia.org/wiki/Galactic_year .... whereas the fastest planet, Mercury, has an average orbital speed of only 47.362 km/s, with virtually everything else in the solar system moving somewhat slower. http://en.wikipedia.org/wiki/Mercury_(planet) In other words, with respect to the galactic center, Mercury moves almost 5 times faster than it moves with respect to the Sun... so it never moves backwards wrt the galactic center! The solar system's galactic orbital motion is mostly ignored for good reason... |
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Fastest star leaving our galaxy was blasted out by a supernova
On Tuesday, March 10, 2015 at 7:56:04 PM UTC, palsing wrote:
On Tuesday, March 10, 2015 at 12:23:54 PM UTC-7, oriel36 wrote: It is truly amazing that the solar system's galactic orbital motion is ignored when looking at variable orbital speeds of planets as they move part of their orbits with the Sun in our galactic orbital motion and part of their orbits moving in the opposite direction. Boy, has your 'intuitive intelligence' failed you once again. The Sun, along with its planets and other orbiting bodies, travel at an average speed of 828,000 km/h (230 km/s) within its trajectory around the galactic center.... http://en.wikipedia.org/wiki/Galactic_year ... whereas the fastest planet, Mercury, has an average orbital speed of only 47.362 km/s, with virtually everything else in the solar system moving somewhat slower. http://en.wikipedia.org/wiki/Mercury_(planet) In other words, with respect to the galactic center, Mercury moves almost 5 times faster than it moves with respect to the Sun... so it never moves backwards wrt the galactic center! The Sun moves constantly in one direction through space. The planets orbit the Sun hence they spend part of their orbits moving with the Sun in our galactic orbital motion and partly in the opposite direction. |
#6
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Fastest star leaving our galaxy was blasted out by a supernova
oriel36 wrote:
On Tuesday, March 10, 2015 at 7:56:04 PM UTC, palsing wrote: On Tuesday, March 10, 2015 at 12:23:54 PM UTC-7, oriel36 wrote: It is truly amazing that the solar system's galactic orbital motion is ignored when looking at variable orbital speeds of planets as they move part of their orbits with the Sun in our galactic orbital motion and part of their orbits moving in the opposite direction. Boy, has your 'intuitive intelligence' failed you once again. The Sun, along with its planets and other orbiting bodies, travel at an average speed of 828,000 km/h (230 km/s) within its trajectory around the galactic center... http://en.wikipedia.org/wiki/Galactic_year ... whereas the fastest planet, Mercury, has an average orbital speed of only 47.362 km/s, with virtually everything else in the solar system moving somewhat slower. http://en.wikipedia.org/wiki/Mercury_(planet) In other words, with respect to the galactic center, Mercury moves almost 5 times faster than it moves with respect to the Sun... so it never moves backwards wrt the galactic center! The Sun moves constantly in one direction through space. The planets orbit the Sun hence they spend part of their orbits moving with the Sun in our galactic orbital motion and partly in the opposite direction. Of course you lot have all the stars wrapped up in a celestial sphere extend out from the Earth's rotation within the calendar framework hence all the academic pseudo-science The solar system's galactic orbital motion is mostly ignored for good reason... You truly unfortunate people can't even handle the daily rotation of the planet , the fixed reference of the central Sun and the number of rotations to an orbital circuit - " During one orbit around the Sun, Earth rotates about its own axis 366.26 times " Wikipedia http://en.wikipedia.org/wiki/Earth The pure and utter misery of thugs with no sense of wrong nor know when to stop. No the planets move in a helix (roughly) http://calgary.rasc.ca/howfast.htm From the link above. Can we add the Earth's orbital speed to the Sun's Galactic speed to get a total? Not really - relative to the plane of the Milky Way Galaxy, the Earth and other planets orbit the Sun kind of "up and down", in other words the Solar System is tipped on its side as the Sun goes around the Galaxy so the speeds don't really add or subtract - they are almost at right angles to one another |
#7
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Fastest star leaving our galaxy was blasted out by a supernova
On 3/10/15 3:30 PM, oriel36 wrote:
The Sun moves constantly in one direction through space. Direction and speed are both observer dependent -- no absolute velocity. |
#8
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Fastest star leaving our galaxy was blasted out by a supernova
On Tuesday, March 10, 2015 at 9:01:45 PM UTC, Mike Collins wrote:
oriel36 wrote: On Tuesday, March 10, 2015 at 7:56:04 PM UTC, palsing wrote: On Tuesday, March 10, 2015 at 12:23:54 PM UTC-7, oriel36 wrote: It is truly amazing that the solar system's galactic orbital motion is ignored when looking at variable orbital speeds of planets as they move part of their orbits with the Sun in our galactic orbital motion and part of their orbits moving in the opposite direction. Boy, has your 'intuitive intelligence' failed you once again. The Sun, along with its planets and other orbiting bodies, travel at an average speed of 828,000 km/h (230 km/s) within its trajectory around the galactic center... http://en.wikipedia.org/wiki/Galactic_year ... whereas the fastest planet, Mercury, has an average orbital speed of only 47.362 km/s, with virtually everything else in the solar system moving somewhat slower. http://en.wikipedia.org/wiki/Mercury_(planet) In other words, with respect to the galactic center, Mercury moves almost 5 times faster than it moves with respect to the Sun... so it never moves backwards wrt the galactic center! The Sun moves constantly in one direction through space. The planets orbit the Sun hence they spend part of their orbits moving with the Sun in our galactic orbital motion and partly in the opposite direction. Of course you lot have all the stars wrapped up in a celestial sphere extend out from the Earth's rotation within the calendar framework hence all the academic pseudo-science The solar system's galactic orbital motion is mostly ignored for good reason... You truly unfortunate people can't even handle the daily rotation of the planet , the fixed reference of the central Sun and the number of rotations to an orbital circuit - " During one orbit around the Sun, Earth rotates about its own axis 366.26 times " Wikipedia http://en.wikipedia.org/wiki/Earth The pure and utter misery of thugs with no sense of wrong nor know when to stop. No the planets move in a helix (roughly) http://calgary.rasc.ca/howfast.htm From the link above. Can we add the Earth's orbital speed to the Sun's Galactic speed to get a total? Not really - relative to the plane of the Milky Way Galaxy, the Earth and other planets orbit the Sun kind of "up and down", in other words the Solar System is tipped on its side as the Sun goes around the Galaxy so the speeds don't really add or subtract - they are almost at right angles to one another Up and down indeed !, because you celestial sphere thugs can't say which planets are above us in the galactic plane, which are below us, which are moving ahead of us around the galactic axis and stars that are following behind. You can't even handle the annual motion of the stars behind the Sun as the Earth moves through space minus stellar circumpolar motion which defines the orbital plane of the Earth around the Sun - https://www.youtube.com/watch?v=MdFrE7hWj0A Just lazy academics making up stories because they are not good enough to see the possibilities of working the solar system's direction in space into planetary orbital dynamics and the strong hint of electromagnetic influences. That is what you get when you try to equate the fall of an apple with the motions of planets, a worthless overreaching notion where you can't deal with the bigger picture I see. Have a good look at the YouTube demonstration - https://www.youtube.com/watch?v=HkoEz-4RN1Q |
#9
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Fastest star leaving our galaxy was blasted out by a supernova
On Tuesday, March 10, 2015 at 9:21:13 PM UTC, Sam Wormley wrote:
On 3/10/15 3:30 PM, oriel36 wrote: The Sun moves constantly in one direction through space. Direction and speed are both observer dependent -- no absolute velocity. Relics of the early 20th century where they understood nothing of Newton's absolute/relative scheme yet you and the rest can now. Newton wasn't defining 'time' - he was botching the timekeeping facility which renders variations in the natural noon cycle into the 24 hour average - "Absolute time, in astronomy, is distinguished from relative, by the equation of time. For the natural days are truly unequal, though they are commonly considered as equal and used for a measure of time; astronomers correct this inequality for their more accurate deducing of the celestial motions.The necessity of which equation, for determining the times of a phænomenon, is evinced as well from the experiments of the pendulum clock, as by eclipses of the satellites of Jupiter." Newton I have helped some people grow out of the jargon fest of the early 20th century guys and maybe even shown Newton's disruptive scheme but what they haven't done yet is see the possibilities of doing things right for a change. There are compound motions involved that do not involve daily rotation - the Sun's motion through space and the planets motions around the Sun. The more power influence is that the solar system is corralled as all the other stars are into galactic motion so it is no longer possible to use analogies of the behavior of objects at a human level to consider this motion. |
#10
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Fastest star leaving our galaxy was blasted out by a supernova
On Tuesday, March 10, 2015 at 9:22:07 PM UTC, oriel36 wrote:
On Tuesday, March 10, 2015 at 9:01:45 PM UTC, Mike Collins wrote: oriel36 wrote: On Tuesday, March 10, 2015 at 7:56:04 PM UTC, palsing wrote: On Tuesday, March 10, 2015 at 12:23:54 PM UTC-7, oriel36 wrote: It is truly amazing that the solar system's galactic orbital motion is ignored when looking at variable orbital speeds of planets as they move part of their orbits with the Sun in our galactic orbital motion and part of their orbits moving in the opposite direction. Boy, has your 'intuitive intelligence' failed you once again. The Sun, along with its planets and other orbiting bodies, travel at an average speed of 828,000 km/h (230 km/s) within its trajectory around the galactic center... http://en.wikipedia.org/wiki/Galactic_year ... whereas the fastest planet, Mercury, has an average orbital speed of only 47.362 km/s, with virtually everything else in the solar system moving somewhat slower. http://en.wikipedia.org/wiki/Mercury_(planet) In other words, with respect to the galactic center, Mercury moves almost 5 times faster than it moves with respect to the Sun... so it never moves backwards wrt the galactic center! The Sun moves constantly in one direction through space. The planets orbit the Sun hence they spend part of their orbits moving with the Sun in our galactic orbital motion and partly in the opposite direction. Of course you lot have all the stars wrapped up in a celestial sphere extend out from the Earth's rotation within the calendar framework hence all the academic pseudo-science The solar system's galactic orbital motion is mostly ignored for good reason... You truly unfortunate people can't even handle the daily rotation of the planet , the fixed reference of the central Sun and the number of rotations to an orbital circuit - " During one orbit around the Sun, Earth rotates about its own axis 366.26 times " Wikipedia http://en.wikipedia.org/wiki/Earth The pure and utter misery of thugs with no sense of wrong nor know when to stop. No the planets move in a helix (roughly) http://calgary.rasc.ca/howfast.htm From the link above. Can we add the Earth's orbital speed to the Sun's Galactic speed to get a total? Not really - relative to the plane of the Milky Way Galaxy, the Earth and other planets orbit the Sun kind of "up and down", in other words the Solar System is tipped on its side as the Sun goes around the Galaxy so the speeds don't really add or subtract - they are almost at right angles to one another Up and down indeed !, because you celestial sphere thugs can't say which planets are above us in the galactic plane, which are below us, which are moving ahead of us around the galactic axis and stars that are following behind. You can't even handle the annual motion of the stars behind the Sun as the Earth moves through space minus stellar circumpolar motion which defines the orbital plane of the Earth around the Sun - https://www.youtube.com/watch?v=MdFrE7hWj0A Just lazy academics making up stories because they are not good enough to see the possibilities of working the solar system's direction in space into planetary orbital dynamics and the strong hint of electromagnetic influences. That is what you get when you try to equate the fall of an apple with the motions of planets, a worthless overreaching notion where you can't deal with the bigger picture I see. Have a good look at the YouTube demonstration - https://www.youtube.com/watch?v=HkoEz-4RN1Q That should be which 'stars' are above us in the galactic plane , below us and so on. |
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