Planet-forming disk abruptly shuts down
July 6, 2012 - Astronomy.com
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Astronomers first saw the dusty disk at TYC 8241 2652 using NASA's
Infrared Astronomical Satellite (IRAS) in 1983, and it remained brightly
glowing for 25 years. Like Earth, warm dust absorbs the energy of
visible starlight (sunlight) and reradiates that heat energy as infrared
radiation. An infrared image obtained at the Gemini Telescope in Chile
on May 1, 2012 confirmed that the warm dust has now been gone for 2.5
years.
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