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Latest Interstellar medium Stories

12400555d5df18070c7fdf5f4b2f83ea1
2010-06-21 06:45:00

A team of scientists from the Instituto Astrofísica de Canarias (IAC) and the University of Texas has succeeded in identifying one of the most complex organic molecules yet found in the material between the stars, the so-called interstellar medium. The discovery of anthracene could help resolve a decades-old astrophysical mystery concerning the production of organic molecules in space. The researchers report their findings in the journal Monthly Notices of the Royal...

2c480641d5943c1e94c846903e5b38691
2010-05-06 10:39:04

Herschel's HIFI instrument was especially designed to follow the water trail in the Universe over a wide range of scales, from the Solar System out to extragalactic sources. Early results, presented this week at the Herschel First Results Symposium, demonstrate how HIFI uses water to probe the physical and chemical conditions in different regions of the cosmos. Water is an extremely important molecule in the Universe, abundant in a large variety of cosmic environments "” from our own...

2d9c69c2f1dbb681812ad660948aae531
2010-04-14 08:45:00

Dust may be a nuisance around the house but it plays a vital role in the formation of the key ingredient for life on Earth "“ water "“ according to researchers at Heriot-Watt University.  The results from pioneering experiments to solve one of the mysteries of the interstellar space, where did all the water come from, will be presented by Victoria Frankland at the RAS National Astronomy Meeting in Glasgow on Wednesday April 14th. "We think that the Earth's water was delivered...

54ab8541cc8d0e7c656edec916a1a0ea1
2010-03-16 14:37:21

As reported in last week's Lunar and Planetary Science Conference in Houston, two most promising candidates for stardust have been identified. They were collected during NASA´s Stardust mission that probed the interstellar stream during 15 months. Since 2006 not only scientists but also amateurs worldwide are scanning samples for the proverbial needle in the haystack: dust particles from others parts of our galaxy that were carried to our solar system via the interstellar...

e9cfef3ca21f5e971da84eba1967cd381
2010-03-16 09:00:45

Nebulae around stars with girth flicker like candles The birth of the most massive stars"”those ten to a hundred times the mass of the Sun"”has posed an astrophysical riddle for decades. Massive stars are dense enough to fuse hydrogen while they're still gathering material from the gas cloud, so it was a mystery why their brilliant radiation does not heat the infalling gas and blow it away. New simulations by researchers affiliated with the University of Heidelberg, American...

af4e82a026833b48093d932ff38c6775
2010-03-07 09:45:00

NASA scientists said they might have identified the first specks of interstellar dust in materials collected by the agency's Stardust spacecraft. The interstellar dust is comprised of tiny particles that take part in making stars and planets. The Stardust spacecraft's primary job was to catch dust streaming from Comet Wild 2 and return it to Earth for analysis. However, scientists also hoped to collect particles of interstellar dust. The material was collected in a 2.9 billion mile...

304c5ea2476c30ee22a5d5a2f6811eb71
2010-02-10 06:55:00

Astronomy & Astrophysics is publishing new 3D maps of the interstellar gas in the local area around our Sun. A French-American team of astronomers presents new absorption measurements towards more than 1800 stars. They were able to characterize the properties of the interstellar gas within each sight line. This week, Astronomy & Astrophysics publishes new 3D maps of the interstellar gas situated in an area 300 parsecs around the Sun. A French-American team of astronomers presents new...

88edd3e77223dd8fc7f99afbbba61e6c1
2010-01-12 23:10:00

Ever since NASA's Interstellar Boundary Explorer, or IBEX, mission scientists released the first comprehensive sky map of our solar system's edge in particles, solar physicists have been busy revising their models to account for the discovery of a narrow "ribbon" of bright emission that was completely unexpected and not predicted by any model at the time. Further study by a team of scientists funded through NASA's Heliophysics Guest Investigator program has produced a revised model that...

65ec13929f445c62e487b99780695f0d1
2010-01-08 14:50:00

Studies of two supernova remnants using the Japan-U.S. Suzaku observatory have revealed never-before-seen embers of the high-temperature fireballs that immediately followed the explosions. Even after thousands of years, gas within these stellar wrecks retain the imprint of temperatures 10,000 times hotter than the sun's surface. "This is the first evidence of a new type of supernova remnant -- one that was heated right after the explosion," said Hiroya Yamaguchi at the Institute of Physical...

05eb230206e60ea5065e9b0a2c3954781
2009-12-23 13:41:57

The solar system is passing through an interstellar cloud that physics says should not exist. In the Dec. 24th issue of Nature, a team of scientists reveal how NASA's Voyager spacecraft have solved the mystery. "Using data from Voyager, we have discovered a strong magnetic field just outside the solar system," explains lead author Merav Opher, a NASA Heliophysics Guest Investigator from George Mason University. "This magnetic field holds the interstellar cloud together and solves the...


Latest Interstellar medium Reference Libraries

7_9d2e259c13e5a649c6295922288878812
2004-10-19 04:45:43

UV Astronomy -- UV astronomy is the branch of astronomy and astrophysics which deals with objects visible in ultraviolet (UV) radiation. UV radiation ranges approximatively from 10nm (extreme UV) to 380nm (near UV). Ultraviolet line spectrum measurements are used to discern the chemical composition, densities, and temperatures of interstellar medium, and the temperature and composition of hot young stars. UV observations can also provide essential information about the evolution of...

6_53083d96ff77dbf99c47ef10b6a209332
2004-10-19 04:45:41

Molecular Cloud -- Molecular clouds are interstellar nebulae that have a density and size sufficient to permit the formation of H2, molecular hydrogen. However, this molecule is difficult to detect, and the molecule most used to trace the H2 is CO (carbon monoxide). The ratio between CO luminosity and H2 mass is roughly constant, although there are reasons to doubt this assumption in observations of some other galaxies. In the Milky Way, molecular clouds account for roughly one-half...

6_465ffbdda99223eeee479def3ec0523d2
2004-10-19 04:45:41

Interstellar Cloud -- Interstellar cloud is the generic name given to accumulations of gas and dust in our galaxy. Depending on the density, size and temperature of a given cloud, the hydrogen in it can be neutral (HI clouds) or molecular (molecular clouds). Chemical compositions Analysing the composition of interstellar clouds is achieved by studying electromagnetic radiation that we receive from them. Large radio telescopes scan the intensity in the sky of particular frequencies of...

6_02132514ceb20be8f009384c891c09472
2004-10-19 04:45:41

Heliopause -- The heliopause is the boundary where our Sun's solar wind is stopped by the interstellar medium. The solar wind blows a "bubble" in the interstellar medium (the rareified hydrogen and helium gas that permeates the galaxy). The point where the solar wind's strength is no longer great enough to push back the interstellar medium is known as the heliopause, and is often considered to be the outer "border" of the solar system. The distance to the heliopause is not precisely...

6_27cd6c2b382d1ebdf3550737650c941e2
2004-10-19 04:45:41

Emission Nebula -- In astronomy, emission nebulae are clouds of ionized gas, emitting light of various colors. The most common source for ionization are high-energy photons emitted from a nearby young, hot star. Usually, a young star will ionize part of the same cloud from which it was born. Only big, hot stars can release the amount of energy required to ionize a significant part of a cloud. Often, an entire cluster of young stars is doing the work. The nebula's color depends on...

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Word of the Day
vermicular
  • Like a worm in form or movement; vermiform; tortuous or sinuous; also, writhing or wriggling.
  • Like the track or trace of a worm; appearing as if worm-eaten; vermiculate.
  • Marked with fine, close-set, wavy or tortuous lines of color; vermiculated.
  • A form of rusticated masonry which is so wrought as to appear thickly indented with worm-tracks.
This word ultimately comes from the Latin 'vermis,' worm.
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