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Latest Astronomical seeing Stories

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2011-08-18 07:25:00

Observations from ESO's Very Large Telescope have shed light on the power source of a rare vast cloud of glowing gas in the early Universe. The observations show for the first time that this giant "Lyman-alpha blob" "” one of the largest single objects known "” must be powered by galaxies embedded within it. The results appear in the 18 August issue of the journal Nature. A team of astronomers has used ESO's Very Large Telescope (VLT) to study an unusual object called a...

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2009-07-22 14:10:00

A consortium of U.S. and Canadian universities on Tuesday announced it has decided to build the world's largest telescope in Hawaii. The telescope, costing $1.2 billion, should allow scientists to see some 13 billion light years away. This is a distance so great, and so far back in time, that researchers should be able to watch the first stars and galaxies as they form. Its mirror will stretch almost 100-feet in diameter (30-meters), which is about three times the diameter of the current...

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2008-10-02 08:05:00

A record two-hour observation of Jupiter using a superior technique to remove atmospheric blur has produced the sharpest whole-planet picture ever taken from the ground. The series of 265 snapshots obtained with the Multi-Conjugate Adaptive Optics Demonstrator (MAD) prototype instrument mounted on ESO's Very Large Telescope (VLT) reveal changes in Jupiter's smog-like haze, probably in response to a planet-wide upheaval more than a year ago. Being able to correct wide field images for...

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2008-07-22 13:45:00

Sometimes seconds count. If a furious, tornado-spitting thunderstorm was bearing down on your home town, a few moments might make all the difference in the world. Will McCarty, a graduate student at the National Space Science and Technology Center, is working with data from NASA's Aqua satellite to improve short-term weather predictions--the kind that could help you dodge that thunderstorm. Guided by his NASA mentor, Gary Jedlovec, McCarty has already learned how to improve 48-hour forecasts...

2007-12-14 06:55:36

Mars will be closer to Earth this month than any time until the year 2016. The red planet is now the brightest "star" in the evening sky and is already above the horizon as evening twilight fades away. But give it at least two more hours – until about 8 p.m. – for it to climb above the poor atmospheric seeing that's near the horizon. By then, this brilliant yellow-orange world will be at an altitude of around 30 degrees as seen from mid-northern latitudes. Your...

2007-04-18 15:33:38

Stunning simulations that give a multi-dimensional glimpse into the interior of stars show that material bubbling around the convection zone induces a rich spectrum of internal gravity waves in the stable layers above and below. The swirling simulations, which are reminiscent of Van Gogh's star paintings, show the interior of a star during the Asymptotic Giant Branch (AGB) phase, the final stage of a low- and intermediate-mass star's life before it becomes a white dwarf. It is during this...

9eec2cc2cc43dda16e969fe65bb596851
2007-04-03 10:30:07

New images and data from ESA's mission to Venus provide new insights into the turbulent and noxious atmosphere of Earth's sister planet. What causes violent winds and turbulences? Is the surface topography playing a role in the complex global dynamics of the atmosphere? Venus Express is on the case. Venus' atmosphere represents a true puzzle for scientists. Winds are so powerful and fast that they circumnavigate the planet in only four Earth days "“ the atmospheric...


Latest Astronomical seeing Reference Libraries

7_6780e401a19a2a410cc76091e7c2309a5
2004-10-19 04:45:43

Adaptive Optics -- Adaptive optics is a technology to improve the performance of Earth-based telescopes, reversing the effect of atmospheric distortions. When light from a star or another astronomical object enters the Earth's atmosphere, the different temperature layers and different wind speeds distort and move the image in various ways (see seeing for a proper discussion). The net result is that an 8 meters or 10 meters telescope (like the VLT or Keck), while theoretically capable...

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Word of the Day
cenobite
  • One of a religious order living in a convent or in community; a monk: opposed to anchoret or hermit (one who lives in solitude).
  • A social bee.
This word comes from the Latin 'coenobium,' convent, which comes from the Greek 'koinobios,' living in community.
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