Saturday, November 30, 2013

ScienceDaily: Black Holes News

ScienceDaily: Black Holes News


Do black holes come in size medium?

Posted: 29 Nov 2013 06:11 PM PST

Black holes can be petite, with masses only about 10 times that of our sun -- or monstrous, boasting the equivalent in mass up to 10 billion suns. Do black holes also come in size medium? NASA's Nuclear Spectroscopic Telescope Array, or NuSTAR, is busy scrutinizing a class of black holes that may fall into the proposed medium-sized category.

ScienceDaily: Astronomy News

ScienceDaily: Astronomy News


Do black holes come in size medium?

Posted: 29 Nov 2013 06:11 PM PST

Black holes can be petite, with masses only about 10 times that of our sun -- or monstrous, boasting the equivalent in mass up to 10 billion suns. Do black holes also come in size medium? NASA's Nuclear Spectroscopic Telescope Array, or NuSTAR, is busy scrutinizing a class of black holes that may fall into the proposed medium-sized category.

Telescope to track space junk using youth radio station

Posted: 29 Nov 2013 07:18 AM PST

A combination of pop songs, talkback radio and cutting-edge science has enabled Australian astronomers to identify a way to prevent catastrophic, multi-billion dollar space junk collisions, a new study has revealed.

ScienceDaily: Galaxies News

ScienceDaily: Galaxies News


Do black holes come in size medium?

Posted: 29 Nov 2013 06:11 PM PST

Black holes can be petite, with masses only about 10 times that of our sun -- or monstrous, boasting the equivalent in mass up to 10 billion suns. Do black holes also come in size medium? NASA's Nuclear Spectroscopic Telescope Array, or NuSTAR, is busy scrutinizing a class of black holes that may fall into the proposed medium-sized category.

Friday, November 29, 2013

ScienceDaily: Dark Matter News

ScienceDaily: Dark Matter News


Scientists seek other scientists for cosmology problem

Posted: 28 Nov 2013 09:41 AM PST

How do you measure something that is invisible? It's a challenging task, but astronomers have made progress on one front: the study of dark matter and dark energy, two of the most mysterious substances in our cosmos. Dark matter is intermixed with normal matter, but it gives off no light, making it impossible to see. Dark energy is even more slippery, yet scientists think it works against gravity to pull our universe apart at the seams. Now for the third time, an innovative competition has begun again with the goal of finding better tools for probing dark matter and dark energy.

ScienceDaily: Astronomy News

ScienceDaily: Astronomy News


Scientists seek other scientists for cosmology problem

Posted: 28 Nov 2013 09:41 AM PST

How do you measure something that is invisible? It's a challenging task, but astronomers have made progress on one front: the study of dark matter and dark energy, two of the most mysterious substances in our cosmos. Dark matter is intermixed with normal matter, but it gives off no light, making it impossible to see. Dark energy is even more slippery, yet scientists think it works against gravity to pull our universe apart at the seams. Now for the third time, an innovative competition has begun again with the goal of finding better tools for probing dark matter and dark energy.

Thursday, November 28, 2013

ScienceDaily: Galaxies News

ScienceDaily: Galaxies News


Figure eights and peanut shells: How stars move at the center of the galaxy

Posted: 27 Nov 2013 08:03 AM PST

Two months ago astronomers created a new 3-D map of stars at the center of our Galaxy (the Milky Way), showing more clearly than ever the bulge at its core. Previous explanations suggested that the stars that form the bulge are in banana-like orbits, but a new article suggests that the stars probably move in peanut-shell or figure of eight-shaped orbits instead.

Fiery drama of star birth, death

Posted: 27 Nov 2013 08:01 AM PST

The Large Magellanic Cloud is one of the closest galaxies to our own. Astronomers have now used the power of ESO's Very Large Telescope to explore one of its lesser known regions. This new image shows clouds of gas and dust where hot new stars are being born and are sculpting their surroundings into odd shapes. But the image also shows the effects of stellar death — filaments created by a supernova explosion.

ScienceDaily: Black Holes News

ScienceDaily: Black Holes News


Fast, furious, refined: Smaller black holes can eat plenty

Posted: 27 Nov 2013 02:04 PM PST

Gemini observations support an unexpected discovery in the galaxy Messier 101. A relatively small black hole (20-30 times the mass of our sun) can sustain a hugely voracious appetite while consuming material in an efficient and tidy manner -- something previously thought impossible. The research also affects the long quest for elusive intermediate-mass black holes.

ScienceDaily: Astronomy News

ScienceDaily: Astronomy News


SOHO shows new images of Comet ISON

Posted: 27 Nov 2013 02:04 PM PST

As Comet ISON heads toward its closest approach to the sun -- known as perihelion -- on Nov. 28, 2013, scientists have been watching through many observatories to see if the comet has already broken up under the intense heat and gravitational forces of the sun.

Fast, furious, refined: Smaller black holes can eat plenty

Posted: 27 Nov 2013 02:04 PM PST

Gemini observations support an unexpected discovery in the galaxy Messier 101. A relatively small black hole (20-30 times the mass of our sun) can sustain a hugely voracious appetite while consuming material in an efficient and tidy manner -- something previously thought impossible. The research also affects the long quest for elusive intermediate-mass black holes.

Figure eights and peanut shells: How stars move at the center of the galaxy

Posted: 27 Nov 2013 08:03 AM PST

Two months ago astronomers created a new 3-D map of stars at the center of our Galaxy (the Milky Way), showing more clearly than ever the bulge at its core. Previous explanations suggested that the stars that form the bulge are in banana-like orbits, but a new article suggests that the stars probably move in peanut-shell or figure of eight-shaped orbits instead.

Fiery drama of star birth, death

Posted: 27 Nov 2013 08:01 AM PST

The Large Magellanic Cloud is one of the closest galaxies to our own. Astronomers have now used the power of ESO's Very Large Telescope to explore one of its lesser known regions. This new image shows clouds of gas and dust where hot new stars are being born and are sculpting their surroundings into odd shapes. But the image also shows the effects of stellar death — filaments created by a supernova explosion.

ScienceDaily: Cosmic Rays News

ScienceDaily: Cosmic Rays News


Fast, furious, refined: Smaller black holes can eat plenty

Posted: 27 Nov 2013 02:04 PM PST

Gemini observations support an unexpected discovery in the galaxy Messier 101. A relatively small black hole (20-30 times the mass of our sun) can sustain a hugely voracious appetite while consuming material in an efficient and tidy manner -- something previously thought impossible. The research also affects the long quest for elusive intermediate-mass black holes.

Fiery drama of star birth, death

Posted: 27 Nov 2013 08:01 AM PST

The Large Magellanic Cloud is one of the closest galaxies to our own. Astronomers have now used the power of ESO's Very Large Telescope to explore one of its lesser known regions. This new image shows clouds of gas and dust where hot new stars are being born and are sculpting their surroundings into odd shapes. But the image also shows the effects of stellar death — filaments created by a supernova explosion.

ScienceDaily: Nebulae News

ScienceDaily: Nebulae News


Fiery drama of star birth, death

Posted: 27 Nov 2013 08:01 AM PST

The Large Magellanic Cloud is one of the closest galaxies to our own. Astronomers have now used the power of ESO's Very Large Telescope to explore one of its lesser known regions. This new image shows clouds of gas and dust where hot new stars are being born and are sculpting their surroundings into odd shapes. But the image also shows the effects of stellar death — filaments created by a supernova explosion.

Tuesday, November 26, 2013

ScienceDaily: Astronomy News

ScienceDaily: Astronomy News


Sounding rocket to peek at atmosphere of Venus

Posted: 25 Nov 2013 02:21 PM PST

A week after launching a new orbiter to investigate the upper atmosphere of Mars, NASA is sending a sounding rocket to probe the atmosphere of Venus.

Mach 1000 shock wave lights supernova remnant

Posted: 25 Nov 2013 01:48 PM PST

When a star explodes as a supernova, the material blasted outward from the explosion still glows hundreds or thousands of years later, forming a picturesque supernova remnant. What powers such long-lived brilliance? In the case of Tycho's supernova remnant, astronomers have discovered that a reverse shock wave racing inward at Mach 1000 (1,000 times the speed of sound) is heating the remnant and causing it to emit X-ray light.

Search for habitable planets should be more conservative, experts say

Posted: 25 Nov 2013 01:46 PM PST

Scientists should take the conservative approach when searching for habitable zones where life-sustaining planets might exist, according to experts.

Pill-popping galaxy hooked on gas

Posted: 25 Nov 2013 07:12 AM PST

Our Galaxy may have been swallowing "pills" -- clouds of gas with a magnetic wrapper -- to keep making stars for the past eight billion years.

ScienceDaily: Cosmic Rays News

ScienceDaily: Cosmic Rays News


Mach 1000 shock wave lights supernova remnant

Posted: 25 Nov 2013 01:48 PM PST

When a star explodes as a supernova, the material blasted outward from the explosion still glows hundreds or thousands of years later, forming a picturesque supernova remnant. What powers such long-lived brilliance? In the case of Tycho's supernova remnant, astronomers have discovered that a reverse shock wave racing inward at Mach 1000 (1,000 times the speed of sound) is heating the remnant and causing it to emit X-ray light.

ScienceDaily: Nebulae News

ScienceDaily: Nebulae News


Mach 1000 shock wave lights supernova remnant

Posted: 25 Nov 2013 01:48 PM PST

When a star explodes as a supernova, the material blasted outward from the explosion still glows hundreds or thousands of years later, forming a picturesque supernova remnant. What powers such long-lived brilliance? In the case of Tycho's supernova remnant, astronomers have discovered that a reverse shock wave racing inward at Mach 1000 (1,000 times the speed of sound) is heating the remnant and causing it to emit X-ray light.

Pill-popping galaxy hooked on gas

Posted: 25 Nov 2013 07:12 AM PST

Our Galaxy may have been swallowing "pills" -- clouds of gas with a magnetic wrapper -- to keep making stars for the past eight billion years.

Sunday, November 24, 2013

ScienceDaily: Astronomy News

ScienceDaily: Astronomy News


NASA's solar observing fleet to watch Comet ISON's journey around the sun

Posted: 22 Nov 2013 01:56 PM PST

It began in the Oort cloud, almost a light year away. It has traveled for over a million years. It has almost reached the star that has pulled it steadily forward for so long. On Thanksgiving Day, Nov. 28, 2013, Comet ISON will finally sling shot around the sun. Here its inward journey through the solar system will end -- either because it will break up due to intense heat and gravity of the sun, or because, still intact, it speeds back away, never to return.

Friday, November 22, 2013

ScienceDaily: Astronomy News

ScienceDaily: Astronomy News


Black hole birth captured: Biggest, brightest to happen in at least 20 years

Posted: 21 Nov 2013 11:23 AM PST

Intelligent telescopes designed by Los Alamos National Laboratory got a front row seat recently for an unusual birth. "This was the burst of the century," said James Wren, one of the scientists involved in the discovery. "It's the biggest, brightest one to happen in at least 20 years, and maybe even longer than that."

The era of neutrino astronomy has begun

Posted: 21 Nov 2013 11:22 AM PST

Astrophysicists using a telescope embedded in Antarctic ice have detected the mysterious phenomena known as cosmic neutrinos -- nearly massless particles streaming to Earth at the speed of light from outside our solar system, striking in a powerful burst of energy. Researchers now will try to detect the cosmic neutrinos' source.

Monster gamma-ray burst in our cosmic neighborhood

Posted: 21 Nov 2013 11:22 AM PST

Gamma-ray bursts are violent bursts of gamma radiation associated with exploding massive stars. For the first time ever, researchers have observed an unusually powerful gamma-ray burst in the relatively nearby universe -- a monster gamma-ray burst.

Astronomers reveal mystery of brightest ever Gamma-ray Burst

Posted: 21 Nov 2013 11:21 AM PST

For the first time, a team of astronomers from around the world have used data from satellites and observatories to explain the brightest Gamma-ray Burst ever recorded.

Infant galaxies merging near 'cosmic dawn'

Posted: 21 Nov 2013 07:36 AM PST

Astronomers using the combined power of the Atacama Large Millimeter/submillimeter Array (ALMA) telescope and NASA's Hubble Space Telescope have discovered a far-flung trio of primitive galaxies nestled inside an enormous blob of primordial gas nearly 13 billion light-years from Earth.

ScienceDaily: Galaxies News

ScienceDaily: Galaxies News


Monster gamma-ray burst in our cosmic neighborhood

Posted: 21 Nov 2013 11:22 AM PST

Gamma-ray bursts are violent bursts of gamma radiation associated with exploding massive stars. For the first time ever, researchers have observed an unusually powerful gamma-ray burst in the relatively nearby universe -- a monster gamma-ray burst.

Infant galaxies merging near 'cosmic dawn'

Posted: 21 Nov 2013 07:36 AM PST

Astronomers using the combined power of the Atacama Large Millimeter/submillimeter Array (ALMA) telescope and NASA's Hubble Space Telescope have discovered a far-flung trio of primitive galaxies nestled inside an enormous blob of primordial gas nearly 13 billion light-years from Earth.

ScienceDaily: Black Holes News

ScienceDaily: Black Holes News


Black hole birth captured: Biggest, brightest to happen in at least 20 years

Posted: 21 Nov 2013 11:23 AM PST

Intelligent telescopes designed by Los Alamos National Laboratory got a front row seat recently for an unusual birth. "This was the burst of the century," said James Wren, one of the scientists involved in the discovery. "It's the biggest, brightest one to happen in at least 20 years, and maybe even longer than that."

Astronomers reveal mystery of brightest ever Gamma-ray Burst

Posted: 21 Nov 2013 11:21 AM PST

For the first time, a team of astronomers from around the world have used data from satellites and observatories to explain the brightest Gamma-ray Burst ever recorded.

ScienceDaily: Cosmic Rays News

ScienceDaily: Cosmic Rays News


Black hole birth captured: Biggest, brightest to happen in at least 20 years

Posted: 21 Nov 2013 11:23 AM PST

Intelligent telescopes designed by Los Alamos National Laboratory got a front row seat recently for an unusual birth. "This was the burst of the century," said James Wren, one of the scientists involved in the discovery. "It's the biggest, brightest one to happen in at least 20 years, and maybe even longer than that."

The era of neutrino astronomy has begun

Posted: 21 Nov 2013 11:22 AM PST

Astrophysicists using a telescope embedded in Antarctic ice have detected the mysterious phenomena known as cosmic neutrinos -- nearly massless particles streaming to Earth at the speed of light from outside our solar system, striking in a powerful burst of energy. Researchers now will try to detect the cosmic neutrinos' source.

Monster gamma-ray burst in our cosmic neighborhood

Posted: 21 Nov 2013 11:22 AM PST

Gamma-ray bursts are violent bursts of gamma radiation associated with exploding massive stars. For the first time ever, researchers have observed an unusually powerful gamma-ray burst in the relatively nearby universe -- a monster gamma-ray burst.

Astronomers reveal mystery of brightest ever Gamma-ray Burst

Posted: 21 Nov 2013 11:21 AM PST

For the first time, a team of astronomers from around the world have used data from satellites and observatories to explain the brightest Gamma-ray Burst ever recorded.

Thursday, November 21, 2013

ScienceDaily: Black Holes News

ScienceDaily: Black Holes News


Evidence of jet in Milky Way's black hole

Posted: 20 Nov 2013 04:24 PM PST

Astronomers have long sought strong evidence that Sagittarius A*, the supermassive black hole at the center of the Milky Way, is producing a jet of high-energy particles. Finally they have found it.