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| | Kids.net.au - Encyclopedia Astronomy and astrophysics - (Site not responding. Last check: 2007-11-07) |
 | | See list of astronomical topics for a more exhaustive list of astronomy-related pages. |
 | | In astronomy, the main way of obtaining information is through the detection and analysis of electromagnetic radiation, photons, but we also receive information from outside the earth carried by cosmic rays, neutrinos, and, in the near future, gravitational waves (see LIGO and LISA[?]). |
 | | A traditional division of astronomy is given by the region of the electromagnetic spectrum observed: |
| www.kidsseek.com /encyclopedia-wiki/as/Astronomy_and_astrophysics (988 words) |
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