united states
aristrachus of samos
The regions of sun are the core,radiation zone,convection zone photosphere,chromosphere and corona.
Mercury: None
Venus: None
Earth: Moon
Mars: Phobos
Jupiter: Ganymede
Saturn: Titan
Uranus: Titania
Neptune: Triton
*Pluto: Charon
*Pluto is not a planet but in case your are curious...
Johannes Kepler and Sir Isaac Newton
Continents.
U.S. F-86 and MIG-15
The rings of the planet Saturn.
the constellation is called perseus.it is of this guy Perseus holding Medusa\'s head. (the person who had snakes for hair).
The September equinox occurs at the midpoint between the Summer and Winter equinoxes. In the winter solstice, the north pole of the earth is tilted away from the sun, and in the summer solstice the north bole is tilted toward the sun. So the september equinox marks the point where the earth is exactly half way between summer and winter in its orbit. During this time, the day everywhere in the northern hemisphere is almost exactly 12 hours (half).
* * * * *
You cannot have a Winter or Summer equinox. They are called solstices!
reflecting
In many places including the United States, winter is defined as the period from the winter solstice to the vernal equinox, spring is defined as the period from the vernal equinox to the summer solstice, summer is defined as the period from the summer solstice to the autumnal equinox, and fall or autumn is defined as the period from the autumnal equinox to the winter solstice. In the northern hemisphere, the winter solstice is the December solstice, the vernal equinox is the March equinox, the summer solstice is the June solstice, and the autumnal equinox is the September equinox. In the southern hemisphere, the winter solstice is the June solstice, the vernal equinox is the September equinox, the summer solstice is the December solstice, and the autumnal equinox is the March equinox. The dates of the March equinox range from the 19th to the 22nd of March, the dates of the June solstice range from the 19th to the 23rd of June, the dates of the September equinox range from the 21st to the 24th of September, and the dates of the December solstice range from the 20th to the 23rd of December. Examples of the earliest season start times are in 2096, and examples of the latest season start times are in 1903.