<\/p>\n
+ The telescope discovered radio noise from the Andromeda GalaxyGreat Nebula in Andromeda\u2014the first definite detection of an extragalactic radio source\u2014and the remains of Tycho’s Supernova<\/strong> in the radio frequency.\n<\/p>\n <\/p>\n + A well-known example of such a nebula is the Crab Nebula, left over from a supernova<\/strong> that was observed in China and North America in 1054.\n<\/p>\n <\/p>\n + By studying the color shifts in the light from the supernova<\/strong> from Earth, they discovered that these billion-year old nova were still accelerating.\n<\/p>\n <\/p>\n + Otherwise they may be the remaining rocky cores of gas giants that survived the supernova<\/strong> and then decayed into their current orbits.\n<\/p>\n <\/p>\n + Baade and Zwicky suggested that the release of the gravitational binding energy of the neutron stars powers the supernova<\/strong><\/strong>: “In the supernova<\/strong><\/strong> process, mass in bulk is annihilated”.\n<\/p>\n <\/p>\n + Tycho’s Supernova<\/strong> also called SN 1572 or B Cassiopeiae \u2013 was a supernova<\/strong> of Type Ia in the constellation Cassiopeia.\n<\/p>\n <\/p>\n + A supernova<\/strong> occurs when a high-mass star reaches the end of its life.\n<\/p>\n + It will rapidly go through its life cycle before exploding as a type II supernova<\/strong> sometime in the next million years.\n<\/p>\n <\/p>\n + Spectroscopic discovery of the supernova<\/strong> 2003dh associated with GRB0303291.\n<\/p>\n <\/p>\n + Some nebulae are formed as the result of supernova<\/strong> explosions, the death throes of massive, short-lived stars.\n<\/p>\n <\/p>\n + SN 1604 was a supernova<\/strong> seen in 1604.\n<\/p>\n <\/p>\n + SN 1994D was a Supernova<\/strong>#TypesType IA supernova<\/strong> near the NGC 4526 galaxy.\n<\/p>\n <\/p>\n + The materials thrown off from the supernova<\/strong> explosion are ionized by the energy and the compact object that it can produce.\n<\/p>\n <\/p>\n + In a macho supernova<\/strong> explosion the temperature and pressure are so high that heavy elements can be made.\n<\/p>\n <\/p>\n + A supernova<\/strong> may also result from mass transfer onto a white dwarf from a star companion in a double star system.\n<\/p>\n <\/p>\n + Recent analysis of historical records have found that the supernova<\/strong> that created the Crab Nebula probably appeared in April or early May, rising to its maximum brightness of between apparent magnitude \u22127 and \u22124.5 by July.\n<\/p>\n <\/p>\n + A supernova<\/strong> can briefly emit as much energy as an entire galaxy, brightening by more than 20 magnitudes.\n<\/p>\n <\/p>\n + SN 1604 is sometimes called Kepler’s Nova or Kepler’s Supernova<\/strong> or Kepler’s Star since Johannes Kepler studied it.\n<\/p>\n <\/p>\n + The supernova<\/strong> event was recorded in the year 1054 and is labelled SN 1054.\n<\/p>\n <\/p>\n + The supernova<\/strong> is some 3.8 billion light-years from Earth.\n<\/p>\n <\/p>\n + The star’s exact age and future are not known, but it is expected to end in a brilliant supernova<\/strong> or hypernova in 1 to 3 million years.\n<\/p>\n <\/p>\n + Looking for the origin of a supernova<\/strong><\/strong>, they suggested that in supernova<\/strong><\/strong> explosions ordinary stars are turned into stars that consist of extremely closely packed neutrons, which they called neutron stars.\n<\/p>\n <\/p>\n + Light and X-ray emission from supernova<\/strong> remnants comes from ionized gas.\n<\/p>\n <\/p>\n + When a supernova<\/strong> happens in a nebula, the explosion pushes the gas in the nebula together.\n<\/p>\n <\/p>\n + SN 1604 is the last supernova<\/strong> to have been seen in our galaxy.\n<\/p>\n <\/p>\n + When it dies it is expected to explode to a Supernova<\/strong> and then turn into a Black hole.\n<\/p>\n <\/p>\n + Taurus also contains the Katy PerryCrab Nebula, which is a supernova<\/strong> remnant.\n<\/p>\n <\/p>\n + This suggested that a supernova<\/strong> may have happened as well.\n<\/p>\n <\/p>\n + Eventually, the white dwarf could explode as a type Ia supernova<\/strong> if it approaches the Chandrasekhar limit.\n<\/p>\n <\/p>\n + The most recent was SN 1994D, which was the supernova<\/strong> of a white dwarf that was made of carbon and oxygen.\n<\/p>\n <\/p>\n + Schmidt and Adam Riess led the High-z Supernova<\/strong> Search Team which found evidence that the Universe’s expansion rate is now accelerating.\n<\/p>\n <\/p>\n + It is the last element to be produced before the violent collapse of a supernova<\/strong> scatters the iron into space.\n<\/p>\n <\/p>\n + The supernova<\/strong> was 168,000 light years away, and so happened 168,000 years ago.\n<\/p>\n <\/p>\n + The last time people saw a supernova<\/strong> in our own galaxy, the Milky Way, was in the year 1604.\n<\/p>\n <\/p>\n + In 1572, a supernova<\/strong> called Tycho’s Star, or SN 1572, was seen in Cassiopeia by many people.\n<\/p>\n <\/p>\n + Today we know that a supernova<\/strong> is the death of an old star.\n<\/p>\n <\/p>\n + This sweeps up an expanding shell of gas and dust, which we see as a supernova<\/strong> remnant.\n<\/p>\n <\/p>\n + The supernova<\/strong> is the only way heavy elements can be made.\n<\/p>\n <\/p>\n + It looks like a remnant from a supernova<\/strong> explosion that happened between 35,000 and 100,000 years ago.\n<\/p>\n <\/p>\n + SN 1987A was a supernova<\/strong> in a small galaxy that is orbiting our Milky Way galaxy.\n<\/p>\n <\/p>\n + The X-ray glow is from material heated to about ten million degrees Celsius by a shock wave generated by the supernova<\/strong> explosion.\n<\/p>\n <\/p>\n + The nebula was observed by John Bevis in 1731; it corresponds to a bright supernova<\/strong> recorded by ChinaChinese and Islamic astronomers in 1054.\n<\/p>\n <\/p>\n + The X-ray afterglows of GRB 020813 and GRB 021004 with Chandra HETGS: possible evidence for a supernova<\/strong> prior to GRB 020813.\n<\/p>\n <\/p>\n + But supernova<\/strong> explosions happen in only 100 seconds.\n<\/p>\n <\/p>\n + Brian Schmidt, an astrophysicist at Mount Stromlo, led an international group, the High-z Supernova<\/strong> Search Team, which looked at the rate of change of the Cosmic Expansion using type Ia supernova<\/strong>e.\n<\/p>\n <\/p>\n + In the end, supernova<\/strong> explosions and strong stellar winds from the most massive stars blow away the gases of the HII region.\n<\/p>\n <\/p>\n + This supernova<\/strong> helped astronomers learn that things in space could change.\n<\/p>\n <\/p>\n + However, it would take 50 to 100 times more energy than a standard supernova<\/strong> explosion to create a structure of this size and energy.\n<\/p>\n <\/p>\n + A supernova<\/strong> is the explosion of a giant star.\n<\/p>\n <\/p>\n + Tycho’s Supernova<\/strong> was created, but it already existed at SN 1572.\n<\/p>\n <\/p>\n + Iron-60 found in fossilised bacteria in sea floor sediments suggests there was a supernova<\/strong> near the solar system about 2,000,000 years ago.\n<\/p>\n <\/p>\n + The Crab nebula is a supernova<\/strong> remnant which probably exploded in 1054 AD.\n<\/p>\n <\/p>\n + The absolute luminosity of this type of supernova<\/strong> can be calculated from its light curve, so these explosions can be used to fix the distance to other galaxies.\n<\/p>\n <\/p>\n + The “r” process is thought to occur in supernova<\/strong> explosions because the conditions of high temperature, high neutron flux and ejected matter are present.\n<\/p>\n <\/p>\n + When a supernova<\/strong> explodes its flash is as bright as a 100 billion stars.\n<\/p>\n <\/p>\n + In a few years, Eta Carinae produced almost as much visible light as a supernova<\/strong> explosion, but it survived.\n<\/p>\n <\/p>\n + The supernova<\/strong> explosion is caused by a white dwarf or a star core reaching a certain mass\/density limit, the Chandrasekhar limit.\n<\/p>\n <\/p>\n + The supernova<\/strong> was visible to the naked eye for about two years after its first observation.\n<\/p>\n <\/p>\n + How a Type II supernova<\/strong> explodes.\n<\/p>\n <\/p>\n + Traces of radioactive iron-60, a strong indicator of supernova<\/strong> debris, is buried in the sea floor right across the globe.\n<\/p>\n <\/p>\n + It was often known as 3C 10, which is a radio-source designation, but now people call it Tycho’s supernova<\/strong> remnant.\n<\/p>\n <\/p>\n + It consists of three components: the remains of a supernova<\/strong> Sagittarius A East, the spiral structure Sagittarius A West, and a very bright compact radio source at the center of the spiral, Sagittarius A*.\n<\/p>\n <\/p>\n![\"Some](\"https:\/\/englishteststore.net\/blog\/wp-content\/uploads\/2021\/09\/Some-example-sentences-of-supernova.jpg\" "\\"Some")
Example sentences of “supernova”:<\/h2>\n
+ It will rapidly go through its life cycle before exploding as a type II supernova<\/strong> sometime in the next million years.\r\n
+ Spectroscopic discovery of the supernova<\/strong> 2003dh associated with GRB0303291.\r\n
+ Some nebulae are formed as the result of supernova<\/strong> explosions, the death throes of massive, short-lived stars.\r\n
<\/pre>\nMore in-sentence examples of “supernova”:<\/h2>\n
+ The star's exact age and future are not known, but it is expected to end in a brilliant supernova<\/strong> or hypernova in 1 to 3 million years.\r\n
+ Looking for the origin of a supernova<\/strong><\/strong>, they suggested that in supernova<\/strong><\/strong> explosions ordinary stars are turned into stars that consist of extremely closely packed neutrons, which they called neutron stars.\r\n
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