The Goldendale Sentinel - Headlines & History since 1879

By Troy J Carpenter
For The Sentinel 

Eclipses (or when things get in front of other things)



ECLIPSES ON OTHER PLANETS: This picture was taken in March at the Goldendale Observatory with the new C14 imaging telescope and shows Jupiter and its moon Io in the middle of a "shadow transit." From Jupiter's perspective, Io is eclipsing the sun. Such transits can be witnessed regularly, even in small telescopes. The next evening, Io was rendered invisible by Jupiter's shadow for a number of minutes, creating the equivalent of a lunar eclipse.

A little before 10 p.m. PDT on Monday, April 14, the moon's orbit will begin carrying it through a great shadow cast by planet Earth-the first lunar eclipse of 2014.

Instead of discussing this event as it would appear from our vantage point, let us temporarily imagine the experience from the perspective of a person (or robot) gazing up from the lunar surface: the sun will appear to slowly retreat behind our home world, becoming completely obscured by the earthly disk after roughly two hours of gradual motion, thus beginning a period called totality just after midnight. The sun will remain hidden for more than an hour, but all will not be darkness, for, from any viewpoint on the moon, the...

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