This year Aphelion, the point in Earth's
when it is farthest from the Sun, occurs tomorrow, July 4th.
Of course, that doesn't
affect the seasons on
our fair planet.
Those are determined by the tilt of Earth's axis of rotation and not
Earth's distance from the Sun, so July is still winter in the south
and summer in northern hemisphere.
But it does mean that on July 4th the Sun will be at its smallest
This composite neatly compares two pictures of the Sun taken with the
same telescope and camera
dates of Perihelion (closest approach) and Aphelion in 2008.
The image labels include Earth's distance in kilometers
from the Sun on the two dates.
to notice, the change in the Sun's
apparent diameter between
and Aphelion is clear.
The difference amounts to a little over 3 percent.
Credit & Copyright:
Enrique Luque Cervigón