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Credit & Copyright: Nick Wright
Explanation:
Does the Sun return to the same spot on the sky every day?á
No.á
A more visual answer is an
analemma, a composite of sky images taken
at the same time and from the same place over a year.á
At completion, you can see that the Sun makes a
figure
8 on the sky.
The featured unusual analemma does not, however,
picture the
Sun
directly: it was created by looking in the
opposite direction.
All that was required was noting where the
shadow of an edge of a
house was in the
driveway every clear day at the same time.
Starting in March in
Falcon,
Colorado,
USA, the photographer methodically marked the shadow's 1 pm location.
In one frame you can even see the
photographer
himself.
Although this analemma will be completed in 2025, you can start drawing
your own driveway analemma -- using no fancy equipment --
as soon as today.
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NASA Web Site Statements, Warnings, and Disclaimers
NASA Official: Jay Norris. Specific rights apply.
A service of: LHEA at NASA / GSFC
& Michigan Tech. U.
Based on Astronomy Picture
Of the Day
Publications with keywords: analemma
Publications with words: analemma
See also: