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Latest Supernova Stories

Violent Youth Seeded The Universe With Iron
2013-10-31 05:07:20

April Flowers for redOrbit.com - Your Universe Online The universe underwent a turbulent and violent youth more than 10 billion years ago, as evidenced by iron spread evenly between galaxies in one of the largest galaxy clusters in the Universe. This violent youth was responsible for seeding the cosmos with iron and other heavy elements that are critical to life itself, according to the new study published in Nature. Scientists from the Kavli Institute for Particle Astrophysics and...

Largest Known Star Self Destructs
2013-10-16 12:49:05

Lee Rannals for redOrbit.com - Your Universe Online A group of international scientists have been observing as the largest known star in the Universe tears itself apart. Astronomers from the UK, Chile, Germany and the US have watched as W26 in the Westerlund 1 star cluster shed its outer layers and flings a huge cloud of glowing hydrogen gas out to return enriched material back to the interstellar medium. The latest observation, reported in the journal Monthly Notices of the Royal...

Magnetic Jets Stars Final Transformation
2013-09-17 12:37:48

John P. Millis, PhD for redOrbit.com - Your Universe Online In general, main sequence stars die in one of two ways: high mass stars, those several times larger than our Sun, will explode in brilliant supernovae, leaving behind a shock remnant with a dense neutron star or black hole at its center. Lower mass stars like our Sun will transition into a planetary nebula. The outer envelope of the star is expressed into the interstellar medium, and the star’s gravity relinquishes its grip....

Cosmic Rays Origins
2013-08-30 11:25:08

[ Listen To The redOrbit.com Podcast: The Mystery Of The Origins Of Cosmic Rays ] John P. Millis, PhD for redOrbit.com - Your Universe Online Streaming across the Universe are high-energy charged particles, known as cosmic rays. They move through space, interacting with our galactic magnetic field, deflecting in every possible direction. Eventually these fast-moving particles may impact the Earth’s atmosphere. For more than 100 years astronomers have been aware of their existence,...

How Fast Does A Supernova Shockwave Travel? A Japan Team May Have The Answer
2013-08-13 14:51:55

Brett Smith for redOrbit.com - Your Universe Online Some of the most spectacular explosions this side of the Big Bang, supernovae generate unthinkable amounts of force and energy and new research from Keio University in Japan has measured the expansion velocity of a supernova shockwave for the first time. The shockwave measured by the research team was from the supernova remnant W44, which is located approximately 10,000 light years from Earth. Quantifying the expansion and kinetic...

Heavy Metals In The Infant Universe
2013-08-07 05:55:59

April Flowers for redOrbit.com - Your Universe Online A star exploded more than 12 billion years ago, ripping itself apart and blasting debris outward in twin jets at nearly the speed of light. The star shone so brightly at its death that it outshone its entire galaxy by a million times. This flash of light traveled across space for 12.7 billion years to a planet that hadn't even existed at the time of the explosion - our Earth. Astronomers have analyzed this light to learn about a galaxy...

Gold Created By Colliding Stars
2013-07-18 04:18:47

[ Watch the Video: Merging Neutron Stars ] redOrbit Staff & Wire Reports - Your Universe Online A gamma-ray burst (GRB) created by the collision of two neutron stars has given researchers new insight into how gold, one of the rarest elements on Earth, and in the entire universe, is formed. Lead author Edo Berger of the Harvard-Smithsonian Center for Astrophysics (CfA) and his colleagues explain that unlike elements such as carbon or iron, gold cannot be created inside of a star....

Astronomers Detect Relatively Cool Supernova Remnant
2013-07-05 14:00:28

Lee Rannals for redOrbit.com - Your Universe Online An international team of astronomers detected surprisingly low temperatures in the remnant of the supernova 1987A, helping to explain the mystery of why space is filled with dust grains and molecules. The team used the Herschel Space Observatory and Atacama Millimeter and Submillimeter Array (ALMA) to study the supernova remnant. They were able to find a vast reservoir of unexpectedly cold molecules and dust. "The powerful explosion...

Astronomers May Have Witnessed A Collapsing Neutron Star
2013-07-05 04:16:37

John P. Millis, PhD for redOrbit.com - Your Universe Online Radio observatories have recently noticed bursts of radio light emerging in the night sky. The intense flashes exist for only a moment then disappear and do not seem to repeat. These so called 'blitzars' are a mystery, but researchers Heino Falcke (Max-Plank Institute for radio astronomy) and Luciano Rezzolla (Albert-Einstein Institute in Potsdam) have suggested we may be witnessing the death-cry of a supermassive pulsar...


Latest Supernova Reference Libraries

6_19859ff34fd03d00777232e2520ce83f5
2004-10-19 04:45:42

Supernova Remnant -- A supernova remnant (SNR) is made up of the materials left behind by the gigantic explosion of a star in a supernova. There are two possible routes to this end: either a massive star may cease to generate fusion energy in its core, and collapse inward under the force of its own gravity, or a white dwarf star may accumulate material from a companion star until it reaches a critical mass and undergoes a similar collapse. In either case, the resulting supernova...

6_79c799b9f03f60809a9d0aecf38491202
2004-10-19 04:45:42

Supernova -- A supernova is a star that increases its brightness drastically within a matter of days, making it appear as if a "new" star was born (hence "nova"). The "super" prefix distinguishes it from a mere nova, which also involves a star increasing in brightness, though to a lesser extent and through a much different mechanism. Astronomers have classified supernovae in several classes, according to the lines of different elements that appear in their spectra. The first...

6_dac4e7d6b8fb5cf3a1458d796b90d7a92
2004-10-19 04:45:42

Stellar Evolution -- Stellar evolution is the process of formation, life, and death of stars. It is one of the major topics of cosmogony. Star Birth and Life A star starts out as an enormous cloud of gas and dust many light-years across. Star formation begins when the cloud begins to condense under its own gravity. The processes that initiate this contraction are not fully understood. The cloud fragments fuse into stellar mass clouds known as protostars. Protostars do not emit...

6_19859ff34fd03d00777232e2520ce83f4
2004-10-19 04:45:42

Nova -- A nova is an enormous nuclear explosion caused by the accretion of hydrogen onto the surface of a white dwarf star. When a white dwarf has a close companion star, the companion will often begin to have its outer atmosphere drawn away from it by the white dwarf's gravity as the companion star ages and expands into a red giant. The gases so captured consist primarily of hydrogen and helium, the two principle constituents of matter in the universe. The gases are compacted on the...

6_01a86ed4f982e83106471153849423222
2004-10-19 04:45:41

Magnetar -- A magnetar is a neutron star with a strong magnetic field. The theory around these objects was formulated by Robert Duncan and Christopher Thompson. When in a supernova a star collapses to a neutron star, its magnetic field increases dramatically in strength. Duncan and Thompson calculated that the magnetic field of a neutron star, normally an already enormous 1012 tesla could under certain circumstances grow even larger, to about 1015 tesla. Such a highly magnetic neutron...

More Articles (9 articles) »
Word of the Day
baudekin
  • A rich embroidered or brocaded silk fabric woven originally with a warp of gold thread.
'Baudekin' seems to be an alternative form of 'baldachin,' from the Italian 'Baldacco,' Baghdad, the city where the material was made.
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