A supernova is a rare phenomenon in the known universe. It is the explosion of a star due to gravitational collapse.
An explosion of a star that causes the star to shine millions of times brighter than usual. TELESCOPE A device which creates a larger image of a far away object. ULTRAVIOLET RAY An invisible form of energy which is given off by the Sun. Ultraviolet rays cause people to get sunburned.
Exploding star becoming 108 times brighter than the Sun in the process.
An explosion of a massive star (with mass greater than 8 to 10 times the mass of the Sun) which ejects, at speeds about a tenth the speed of light, most of the original mass into space. The shell of material left behind may form a white dwarf, neutron star, or black hole, a region where gravity is so strong that no radiation or matter can escape. There is a short billionfold increase in luminosity.
When a star exhausts its nuclear fuel, it under goes a catastrophic collapse. The resulting explosion is known as a supernova. It often is brighter than an entire galaxy.
The explosion of a star Tidal effect - The stretching effect caused by a difference in gravitational pull on two parts of the same body
A violent stellar explosion that releases energy exceeding the luminosity of an entire galaxy or the radiated energy from the Sun over one billion years. Astronomers divide supernovae into two groups: Type I and Type II. Low mass stars most likely produce Type I supernovae, which are caused by white dwarf stars in binary systems that blow off material accumulated from the binary companion. Stars of eight or more solar masses become Type II supernovae, which are simply the explosion at the end of the life of massive stars. Both neutron stars and black holes can result from Type II supernovae. Astronomers can use data from supernovae to estimate the distance to them. Most observed supernova lie within other galaxies, thus allowing astronomers to check distance calibrations outside of the Milky Way and the expansion rate of the universe. In addition, supernovae observations can reveal the relative abundances of elements blown into the interstellar medium as a result of the explosion. This information helps astronomers understand how materials are recycled in galaxies.
This is the immense explosion which takes place when the core of a massive star collapses under its own gravity.
The explosion of a massive star. This explosion occurs in the star's death phase right after the red giant stage. At the peak of the explosion, it can outshine a galaxy.
A SuperNova is a mixed unit of OmniMechs and Elementals commanded by a Star Captain or a Nova Captain. It usually consists of a Binary/Trinary of OmniMechs supported by a Binary/Trinary of Elementals.
A star that explodes and loses most of its mass.
a star which is very bright due to an explosion disrupting its structure.
(plural = supernovae) The death explosion of a massive star whose core has completely burned out. Supernova explosions can temporarily outshine a galaxy. The outer layers are blasted out in an expanding cloud. This cloud is visible long after the initial explosion fades, and is called a supernova remnant (SNR).
Exploding star that suddenly attains a luminosity up to 100 million times the Sun's brightness.
for Type II supernova: final huge mass-loss stage for a dying high-mass star where the outer layers are ejected during the core's collapse to form a neutron star Type I supernova is the result of enough hydrogen accreted onto a white dwarf's surface to put the white dwarf beyond the Chandresekhar limit. The white dwarf collapses and the super-rapid fusion blows the white dwarf apart (contrast with a nova). The luminosity of a supernova can temporarily be as much as an entire galaxy of billions of stars.
A violent explosion that is the endpoint of the evolution of a massive star. Often a compact object is produced such as a neutron star or black hole.
a cosmic flare, providing a singular chance to measure the distance to its host galaxy
a giant star that collapses onto itself when its core runs out of fuel, causing an explosion
a giant star which has come to the end of its life and dies in a massive explosion
a huge stellar explosion releasing vast amounts of energy over a period of weeks
a massive star that burns through its nuclear fuel -- layers of hydrogen, of helium, of carbon, oxygen, silicon, sulphur, etc
a massive star that explodes
an explosion of a massive supergiant star
an explosion of the outer corona and an implosion of the inner core
an explosion that occurs when a very large star -- larger than our sun -- is unable to continue thermonuclear reactions at its core, and the force of gravity causes most of the outer shell of the star to explode
an explosion that signals the death of certain types of stars
an unimaginably huge explosion of a star
an unimaginably powerful implosion-explosion reaction whose force is so great, it can fuse iron and other elements into everything higher on the periodic table
an unimaginably violent event, and all sorts of interesting things happen in it
a rapid explosion of a star at the end of its normal life
a rare celestial phenomenon, the explosion of most of the material in a star
a rare event, but new telescopes equipped with sophisticated electronic sensors allowed the research teams to track dozens of stellar explosions in the sky
a star that explodes and then slowly fades to less than its original (brightness)
a star that has exploded for the last time
a star which becomes extremely bright because of the explosion of its nucleous
a star which explodes catastrophically, with a sudden liberation of most of its energy and the dissipation of nearly the whole mass of the star into space
a stellar explosion which appears to result in the creation of a new star, upon the celestial sphere
a sudden solar explosion, but this pianist's engines are burning longer, more steadily than that
a terminal phase in the life of a star, which can then become a cloud of gas or a compact celestial body such as a pulsar or a black hole
a titanic explosion that completely disrupts a star,
a "violent explosion that occurs when a large star uses up its supply of fuel, collapses under its own weight, and explodes
a violently exploding star
a violent stellar explosion that destroys a star, while ejecting the products of nuclear burning into the gas between stars
the explosion of a high-mass star in its final stages before death
The explosive end of stars that either disrupts the precursor star (supernova of type I; precursor star is a white dwarf of about 1.4 solar masses) or ejects a large part of the precursor star's outer layers, leaving behind a neutron star or black hole (supernova of type II; precursor star has more than about eight solar masses). Supernovae are among the brightest events in today's universe and sometimes shine as brightly as the galaxy in which they reside.
The catastrophic explosion of a star, which blows off most of its mass, increasing in brightness by as much as a billion times. A Type I supernova is due to the thermonuclear detonation of a compact white dwarf star which becomes unstable by accreting mass from an orbiting companion star. A Type II supernova results from the gravitational collapse of a massive star that has exhausted its nuclear fuel.
An explosion caused by the death of a massive star. At its peak energy output, a supernova can outshine a galaxy.
The explosion of a star as it runs out of nuclear fuel. The Earth and beyond
Violently exploding stars which shine very brightly for days or weeks. They occur when the fuel for nuclear reactions is used up, and a star cools. Gravity pulls all the matter down toward the star's center. If this happens quickly, nuclear reactions may suddenly begin again, detonating the star in a nuclear explosion.
The explosion caused when a massive star, at least 8 times the Sun's mass, dies (exhausts its fuel) and collapses. If the original star is less than 20 solar masses, the supernova will leave behind a neutron star. Heavier stars will collapse into black holes. Supernova explosions are among the most energetic events in the Universe, and they forge the heavy elements such as carbon, oxygen, and silicon.
An unusually violent explosion of a star which results in an increase in brightness of hundreds of millions of times.
the death of a star, usually a very violent process
A supernova (Type II) is the explosive event that occurs when the core of a massive star collapses at the end of that star's lifetime. The resulting expansion of the star's outer layers and the subsequent release of radiation, can be produce an event in the optical spectrum equivalent in brightness to an entire galaxy. A Type I supernova occurs in a binary star system containing a white dwarf star which acquires enough material from the companion star to undergo thermonuclear detonation. More.
catastrophic explosion of a star Type Ia due to white dwarf in binary system accreting enough matter to exceed Chandrasekhar limit (spectrum at maximum light shows silicon line but no hydrogen lines) Type Ib due to formation of iron core in massive star which has lost its hydrogen envelope through stellar wind and/or mass loss to binary companion (spectrum contains neither silicon nor hydrogen lines) Type II due to formation of iron core in massive star (spectrum shows strong hydrogen lines)
The sudden, intense brightening produced by the cataclysmic destruction of a star. A core-collapse supernova occurs when fusion stops in the iron core of a high-mass star. Electron degeneration is not able to support the core, which crushes inward upon itself releasing an incredible amount of energy. In binary systems, a white dwarf which accumulates mass beyond the Chandrasekhar limit (1.4 solar masses) from a gravitationally bound companion will undergo a cataclysmic collapse. This produces what is known as a type IA supernova.
Explosion of a massive star at the end of its life. Supernova explosions are so luminous that they can outshine a galaxy. There are two types of supernovae. A supernova type I is most likely a white dwarf star in a binary system which accretes material that builds up until a nuclear explosion disrupts the star. A supernova type II is a massive star which has used up all its nuclear fuel. The star then collapses and the impact of all the material produces a shock wave which blasts the outer layers of the star out.
(More accurately, type II supernova.) When a star burns up all its fuel, it collapses and the released gravitational energy blows off its top layers, creating a supernova explosion. What remains of the star depends on its mass. Low-mass stars crush their atoms and become white dwarfs, about as big as Earth. High mass stars collapse into black holes whose gravity prevents any light from escaping. Stars with masses between those extremes collapse into neutron stars, consisting of extreme dense nuclear matter held together by gravity and nuclear force, with a radius of the order of 10 km.
A catastrophic stellar explosion that can briefly outshine an entire galaxy of billions of stars. It can occur when a supergiant star exhausts all its nuclear fuel causing the core of the star to collapse releasing a vast amount of energy which blasts away the outer parts of the star and leaves behind a neutron star or in extreme cases a black hole.
Explosive death of a star, caused by the sudden onset of nuclear burning (type I), or gravitational collapse followed by an enormously energetic shock wave (type II). One of the most energetic events of the universe, a supernova may temporarily outshine the rest of the galaxy in which it resides. [More Info: Field Guide
A gigantic stellar explosion in which the star's luminosity suddenly increases by as much as a billion times. Most of the star's substance is blown off, leaving behind, at least in some cases, an extremely dense core which may be a neutron star.
A large dying star, the final collapse of which is a cataclysmic explosion, hurling its substance into space.
The death explosion of a massive star, resulting in a sharp increase in brightness followed by a gradual fading. At peak light output, supernova explosions can outshine a galaxy. The outer layers of the exploding star are blasted out in a radioactive cloud. This expanding cloud, visible long after the initial explosion fades from view, forms a supernova remnant .
A short-lived, very bright object in space that results from the cataclysmic explosion marking the death of a very large star; the explosion ejects large quantities of matter into space to form new nebulae.
A supernova is a cataclysmic explosion caused when a star exhausts its fuel and ends its life. Supernovae are the most powerful forces in the universe. All of the heavy elements were created in supernova explosions.
An immense explosion of a star in its later stages of life that may form a black hole or neutron star.
The explosion of a star at the end of its life. Not all stars explode, only those about ten to twenty times more massive than our Sun. A supernova creates the elements that are heavier than iron (such as gold and most of the other metals).
A supernova is a huge explosion that occurs at the end of a mid- to heavy-weight star's life. A supernova releases a tremendous amount of energy, expelling the outer layers of the star and becoming extremely bright. What remains is a neutron star (from a middle-weight star, mass between 1.5 to 3 times the mass of the Sun) or a black hole (from a supergiant star, mass over 3 times the mass of the Sun).
the cataclysmic explosion of a high-mass star.
a violent explosion heralding the death of a star
The end result of the evolution of the most massive stars.A supernova is a massive explosion, where the contents of the star are thrown into space at speeds approaching 0.1c. The energy released over a period of a few weeks can be similar to that released by the Sun in its entire (approx. 10 billion year) lifetime. The result of a supernova can be the creation of a neutron star, or even a black hole.
An extremely violent explosion of a star many times more massive than our Sun. During this explosion, the star may become as bright as all the other stars in a galaxy combined, and in which a great deal of matter is thrown off into space at high velocity and high energy. The remnant of these massive stars collapse into either a neutron star or a black hole.
Only happens in massive stars, it is when the supergiant collapses, sending shockwaves outwards from the star. This then forms a black hole or a neutron star.
the final step in the evolution of a massive star, during which the star explodes reaching an exceptional luminosity, even equal to that of a whole galaxy. The outcome of the explosion can be the destruction of the star, or a neutron star or a black hole. Telescope monture the whole of the structure and the geometry of a telescope, which allows the rotation motion around two axes, in order to follow the movement of a star in the sky.In the altazimuth monture, one of the axes is the vertical line that passes through the observer, the other is parallel to the plane of the horizon. In the equatorial monture, on the contrary, one of the axes is parallel to the axis of terrestrial rotation, the other is parallel to the plane of the horizon, and perpendicular to the former.
A star that explodes and becomes extremely luminous in the process. What remains after the explosion is a neutron star (from a middle-weight star, mass between 1.5 to 3 times the mass of the Sun) or a black hole (from a supergiant star, mass over 3 times the mass of the Sun).
A supermassive star may undergo a cataclysmic explosion at some point after it has exhausted its internal hydrogen used for fuel. The famous crab nebulais a beautiful example of the still-expanding gases surrounding a supernova explosion that occurred in the year 1054.
A stupendous explosion of a massive star, which increases its brightness hundreds of millions of times in a few days.
A huge stellar explosion involving the destruction of a massive star and resulting in a sudden and tremendous brightening.
Large stars can explode and release more energy in three weeks than the Sun gives off in ten billion years (p.97).
The cataclysmic explosion of a massive star in which most of the star is blown off into interstellar space.
A star which is in the proccess of exploding. It is thought to be caused by gravitational collapse. During this time the star's brightness sharply increases and makes it easily identifiable to astronomers. Sometimes supernovas leave behind dense cores.
The explosion that occurs when a large star dies.
The explosive death of a massive star whose energy output causes its expanding gases to glow brightly for weeks or months.
A supernova (plural: supernovae) is a stellar explosion which produces an extremely luminous object that is initially made of plasma—an ionized state of matter. A supernova may briefly out-shine its entire host galaxy before fading from view over several weeks or months. It would take about 10 billion years for the Sun to produce the energy output from the supernova explosion of a massive star.
Supernova was a movie of the week originally released on the Hallmark Channel. The film is a typical disaster movie and as such it had a large number of special effects. Luke Perry is the star of the film and Peter Fonda, a former Golden Globe winner, is also a part of the story.