aphelion: the point where the earth is farthest (152 million kilometers) from the sun while in its orbit. Currently, this occurs on July 5.
Aphelion - The point in the orbit of a planet that is farthest from the Sun.
Apparent Temperature - The air temperature perceived by a person.
Arctic (A) Air Mass - A bitterly cold air mass that forms over the frozen Arctic Ocean.
Aphelion - The point on the annual orbit of a body (about the sun) that is farthest from the sun; at present, the earth reaches this point (152 million kilometer from the sun) on about 5 July. Opposite of perihelion.
APHELION
The point on the earth's orbit that is farthest from the sun. Although the position is part of a 21,000 year cycle, currently it occurs around July, when the earth is about 3 million miles farther from the sun than at perihelion.
Although the position is part of a 21,000 year cycle, currently it occurs around January, when the earth is about 3 million miles closer to the sun than at aphelion. This term can be applied to any other celestial body in orbit around the sun.
Spring Mar 20 18;26 Fall Sept 23 04:03 Summer June 21 12:26 Winter Dec 22 00:22 2007 2007 Spring Mar 21 00:07 Fall Sept 23 09:51 Summer June 21 18:06 Winter Dec 22 06:08 2008 2008 Perihelion Jan 3 00 Equinoxes Mar 20 05 48 Sept 22 15 44 Aphelion July ...
NOAA National Weather Service - Cite This Source - This Definition
Browse Related Terms: Aphelion, apogee, Astronomical Unit, perigee, Perihelion, recurrence, Rotation, Solar Noon, Tidal Cycle, Tide Prediction ...
Perihelion The point in the orbit of a planet or comet which is nearest the Sun (as opposed to the aphelion, which is the point in the orbit farthest from the Sun).
Opposite of aphelion.PermafrostA layer of soil at varying depths below the surface in which the temperature has remained below freezing continuously from a few to several thousands of years.
 See also: Weather, Earth, Orbit, Pressure, Meteor
  
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