Museum Blog

Articles for author Ka Chun Yu: 12

  • NASA's workforce is pretty big. It is not the largest by federal government standards (a record held by the Department of Defense, which has over 3.2 million). Even the US Postal Service has 600,000 workers (just under Denver's population). NASA “only” has about 80,000 workers, split between 20,000…
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  • I first met Kenji Williams ten years ago at the American Museum of Natural History in New York City. We talked about using digital planetariums (then a relatively new technology) for artistic as well as scientific expressions. Kenji is a classically-trained musician, composer, and filmmaker living o…
  • Lockheed Martin engineer Darrel Williamson gives a presentation about the Orion spacecraft to more than 400 people in DMNS' IMAX theater. The Orion spacecraft finally flew on Friday, December 5, after the launch slipped one day. On the morning of Thursday, December 4, we had an early morning launc…
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  • The dusty protoplanetary disk around the young star HL Tau compared with the Solar System at the same scale. The gaps in the disk are thought to have been created by growing planets which are sweeping up gas and dust. The orbits of Mars, Jupiter, Saturn, Uranus, and Neptune are visible in the depic…
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  • Kepler Orrery II

    Posted 04/02/2012 by Ka Chun Yu | Comments
    Last year, a couple of animations showing solar system candidates from Kepler were posted to Youtube. The sequel is now back! Created by Daniel Fabrycky from the Kepler science team, here are all of the planetary system candidates with more than one planetary companion orbiting the parent star. Th…
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  • All sky surveys provide a sort of fundamental baseline to astronomical observational science.  Such surveys are done using the same telescope and/or instrument, or at least instruments that are similar enough that the differences between them are well understood.  (The latter occurs in …
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  • The disk-shaped nebula around a young star contains all of the raw materials -- gas and dust -- which can eventually accumulate into planets.  How this matter actuallly ends up in planetary form is still a matter of debate.  Our observational technology is not good enough yet to allow u…
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  • The Kepler mission discovered more than 1200 solar system candidates around other stars. Here is a video showing the orbital motions of all of the systems that show evidence of multiple planets as of February 2011: The size of each planet is not shown relative to scale to the size of their orbits, …
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  • To celebrate the 21st anniversary of the Hubble Space Telescope, a spectacular image of the pair of colliding galaxies Arp 273 was released. Click on the image to get a super-enormous 4000-pixel wide version of the image (or this link for the full-size TIFF at roughly 8000 pixels across, and 120 MB…
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  • March 31, 2011 -Our ability to understand the Universe has been enhanced immensely by technology that allows us to detect electromagnetic radiation at wavelengths far beyond what our eyes can sense.  For instance when we look out into the night sky and behold the Milky Way, we are seeing the a…
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