telescopes

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Latest blogosphere posts tagged “telescopes”

 

• Sifting through the atmospheres of far-off worlds

  
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  Gone are the days of being able to count the number of known planets on your fingers. Today, there are more than 800 confirmed exoplanets—planets that orbit stars beyond our sun—and more than 2,700 other candidates. What are these exotic planets made of? Unfortunately, you cannot stack them in a jar like marbles ...
  1 week ago

• Telescopes and Fireworks

  
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  Telescopes and fireworks are hardly a synonymous combination, but it’s going to happen this time in celebration of Bernard Lovell’s 100th birthday when music meets science. Bernard Lovell and Charles Husband were both responsible for the creation of the fantastic Lovell telescope in 1955. At 250ft it was the ...
  1 week ago

• The Interstellar Mind of Robert Goddard

  
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  From Centauri Dreams : Astronautics pioneer Robert H. Goddard is usually thought of in connection with liquid fuel rockets. It was his test flight of such a rocket in March of 1926 that demonstrated a principle he had been working on since patenting two concepts for future engines, one a liquid fuel design, the ...
  2 weeks ago

• “A major difference between the hurricanes is that the one on Saturn is much bigger…”

  
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  As I mentioned previously , Saturn doesn’t get the love some of our other gas giants do .   [All hail our friend and lord , Jupiter!  Keeping Ogdy at bay…  - Ed]   Indeed… [new link]  But, with the help of Cassini , Saturn does provide some wondrous images .   In some of its first sunlit ...
  3 weeks ago

• Hunting for Brown Dwarf Planets

  
  Centauri Dreams — Authority: 134
  Brown dwarfs fascinate me because they’re the newest addition to the celestial menagerie, exotic objects about which we know all too little. The evidence suggests that brown dwarfs can form planets, but so far we’ve found only a few. Two gravitational microlensing detections on low mass stars have been reported, ...
  3 weeks ago

• Blowing Distortion Out of Palomar’s Eye (Jun, 1950)

  
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  Preventing distortion in modern telescopes is a bit more complicated . Blowing Distortion Out of Palomar’s Eye ORDINARY electric fans—a dozen of them—plus an “overcoat” of insulating foil are helping the Big Eye of the Palomar Observatory to see clearer and farther into the vastness of the ...
  3 weeks ago

• The Formation of Stars

  
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  Overview:  How Stars Are Made Astronomers and physicists have theorized that stellar formation happens when clouds of gas and interstellar dust collapse, molecules of hydrogen attract one another, and nuclear fusion generates energy and heat.  During the process, these young stars are very faint, with energy near ...
  3 weeks ago

• The Alpha Centauri Angle

  
  Centauri Dreams — Authority: 134
  Apropos of yesterday’s article on the discovery of Proxima Centauri, it’s worth noting that Murray Leinster’s story “Proxima Centauri,” which ran in Astounding Stories in March of 1935, was published just seven years after H. A. Alden’s parallax findings demonstrated beyond all doubt that Proxima was the ...
  3 weeks ago

• ‘Standard candle’ supernova extraordinarily magnified by gravitational lensing

  
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  A team of researchers at the Kavli IPMU led by Robert Quimby has identified what may prove to be the first ever Type Ia supernova (SNIa) magnified by a strong gravitational lens. In this work, the ‘standard candle’ property of Type Ia supernovae is used to directly measure the magnification due to gravitational ...
  3 weeks ago

• Finding Proxima Centauri

  
  Centauri Dreams — Authority: 134
  It’s fascinating to realize how recent our knowledge of the nearest stars has emerged. A little less than a century has gone by since Proxima Centauri was discovered by one Robert Thorburn Ayton Innes (1861-1933), a Scot who had moved to Australia and went on to work at the Union Observatory in Johannesburg. Innes ...
  4 weeks ago

• A Gravitationally Lensed Supernova?

  
  Centauri Dreams — Authority: 134
  I keep a close eye on gravitational lensing, not only because of the inherent fascination of the subject but also because the prospect of using the Sun’s own lensing to study distant astrophysical phenomena could lead to near-term missions to 550 AU and beyond. And because I’m also intrigued by ‘standard ...
  4 weeks ago

• Solar Dynamics Observatory: Three years in three minutes

  
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  What it says on the tin.  Three years after First Light , Nasa’s Solar Dynamics Observatory (SDO) has released three stunning minutes of images compiled during its  virtually unbroken coverage of the sun’s rise toward solar maximum .  Enjoy!  [Video from NasaExplorer on YouTube . Credit: NASAs Goddard ...
  4 weeks ago

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