A few lucky people in the Indian Ocean will be treated to a rare event on Monday 26 Jan 2009 when an annular solar eclipse will transform the Sun into a dark disc with a blazing ring-shaped corona around its rim. In solar eclipses, the Moon moves between the Sun and Earth, casting its shadow on the terrestrial surface.
In an annular eclipse, a tiny shift in distance that results from celestial mechanics means the Moon does not completely cover the Sun's face, as it does in a total eclipse.
Instead, for those directly under the alignment, the Moon covers most of the Sun's surface, and a ring-like crown of solar light blazes from the edge of the disk.
For those watching from the fringe of the track, the Sun is partially obscured, as if a bite has been taken out of it.
According to veteran NASA eclipse-watcher Fred Espenak, the total eclipse track will run from west to east on Monday from 0606 GMT to 0952 GMT.
The big event for eclipse junkies this year is on July 22, when a total solar eclipse will be visible from India and China, the world's two most populous countries.