解析 A 听力原文为: Man: Do you know the Hubble? Woman: I've heard about the name, but I don't know what it is exactly. Is it a car? Man: No. It is the telescope launched into space by NASA on April 20, 1990.反馈 收藏 ...
Hubble's Law:In cosmology, Hubble's Law is the observation that galaxies are moving away from the Earth at a velocity that is proportional to their distance from Earth. This was the first evidence of the expansion of the universe, which laid the groundwork for the Big Bang Theory....
What is a Hubble Telescope made of?Construction of the Hubble:The Hubble Space Telescope was constructed in pieces and later assembled. The spacecraft that would house the mirrors and instruments was built by Lockheed, while the mirror itself was built by Perkins-Elmer....
CCD sensors continue to be used in medical, scientific and industrial equipment. Even theHubble Space Telescopesports a CCD sensor. But the momentum is clearly behind CMOS, and the future of CCD remains unclear.
Free Essay: Seeing the Unseen: The Hubble Telescope The universe is a vast and complex system that has fascinated astronomers for as far back as mankind can...
HubbleSite.org. "What is a Supernova, and What Can it Tell us About the Universe?" (Sept. 16, 2011) http://hubblesite.org/reference_desk/faq/answer.php.id=30&cat=stars IAU Central Bureau for Astronomical Telegrams. "How to Report a Discovery." (Sept. 16, 2011) http://www.cbat...
The technology to build such a device is not possible currently but is within our grasp. NASA is working on testing a key component: the "warp bubble," previously mentioned (Scharr). To create such a field, you rely on what we call "negative energy," or what forms in the vacuum of ...
How would we ever have proven the existence of a black hole, in that case? According to NASA, this image from the Hubble Space Telescope indicates that a huge ring of dark matter probably surrounds the center of the galaxy cluster CL0024+17.Credit: NASA, ESA, M. J. Jee and H. Ford...
In fact, the Hubble Space Telescope is a Ritchey Chretién. The iOptron Photron RC6 (Ritchey Chretién). The secondary mirror in a Ritchey Chretién is held up by four struts (spider vanes), just like a Newtonian telescope. This creates diffraction spikes in the bright stars of an ...
NASA reports that the Hubble Space Telescope generates about 10 TB of new data a year and that the total Hubble archive is currently over 150 TB. Terabyte vs. other data storage values Major vendors with terabyte storage A series of mergers of HDD vendors in the early 2000s left Seagate, ...