A solar eclipse occurs when the moon moves between the sun and the
earth, and blocks at least part of the sun's light to an observer
somewhere on earth. A solar eclipse can only occur during the time of new
moon, and only when the moon is close to a node in its orbit.
Solar eclipses are thought of as being rare; but on average a solar
eclipse will occur somewhere on earth about twice a year. An eclipse
may be partial, total, or annular. A total solar eclipse
implies that at some point on earth, the moon will totally occlude the
sun's light for a short period of time. A partial eclipse occurs
when part of the sun's disk is obscured by the moon, but implies that
there is no point on the earth's surface where the disk is totally
covered. An annular eclipse is in effect a total eclipse that occurs when
the moon is sufficiently far away from the earth in its orbit that its
apparent size is too small to completely obscure the sun's face. When
this happens, a ring of fire is visible surrounding the moon at the
height of the eclipse.
A total eclipse is the most spectacular sight of the three types
of eclipse, for during totality, the outer atmosphere or corona
of the sun is visible to the naked eye. This awe inspiring sight
is something that will be remembered for a lifetime.
Detailed information on
coming solar eclipses can be found in a NASA Web site.
The following table lists all the solar eclipses that will
occur up to the year 2006.
Date Type Places Where Eclipse is Visible
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31 May 2003 Annular North Atlantic,Arctic
23 Nov 2003 Total Antarctica
19 Apr 2004 Partial Antarctica, South Atlantic
14 Oct 2004 Partial North Pacific, Arctic
08 Apr 2005 Annular/Total Pacific, Central America
03 Oct 2005 Annular Spain, Africa, Indian Ocean
29 Mar 2006 Total Africa, Turkey, Russia
22 Sep 2006 Annular South America, West Africa
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Suggested Further Reading and Reference:
"Eclipse", by David and Carol Allen (Allen and Unwin, Sydney, 1987)
"Fifty Year Canon of Solar Eclipses", by Fred Espenak (NASA Reference
Publication 1178, 1987)
Material Prepared by Richard Thompson & John Kennewell. © Copyright IPS - Radio and Space Services.