From 9b58d35185905f8334142bf4988cb784e993aea7 Mon Sep 17 00:00:00 2001 From: Timothy Pearson Date: Mon, 21 Nov 2011 02:23:03 -0600 Subject: Initial import of extracted KDE i18n tarballs --- tde-i18n-en_GB/docs/kdeedu/kstars/csphere.docbook | 28 +++++++++++++++++++++++ 1 file changed, 28 insertions(+) create mode 100644 tde-i18n-en_GB/docs/kdeedu/kstars/csphere.docbook (limited to 'tde-i18n-en_GB/docs/kdeedu/kstars/csphere.docbook') diff --git a/tde-i18n-en_GB/docs/kdeedu/kstars/csphere.docbook b/tde-i18n-en_GB/docs/kdeedu/kstars/csphere.docbook new file mode 100644 index 00000000000..9237efa55e7 --- /dev/null +++ b/tde-i18n-en_GB/docs/kdeedu/kstars/csphere.docbook @@ -0,0 +1,28 @@ + + +Jason Harris + +The Celestial Sphere +Celestial Sphere +Celestial Coordinate Systems + +The celestial sphere is an imaginary sphere of gigantic radius, centred on the Earth. All objects which can be seen in the sky can be thought of as lying on the surface of this sphere. Of course, we know that the objects in the sky are not on the surface of a sphere centred on the Earth, so why bother with such a construct? Everything we see in the sky is so very far away, that their distances are impossible to gauge just by looking at them. Since their distances are indeterminate, you only need to know the direction toward the object to locate it in the sky. In this sense, the celestial sphere model is a very practical model for mapping the sky. The directions toward various objects in the sky can be quantified by constructing a Celestial Coordinate System. + -- cgit v1.2.1