The "Ankh" is not representative of the sun at all, there are two ancient Egyptian symbols that do mean that, the "Aten"(fig 2) and the "disc"(fig 1)
The word ankh means the key of life, it is the ultimate fertility symbol being made up of a stylised penis and testicles coming forth from a vagina, it is therefore wielded by the priests and the gods to bring forth abundance and is often used in both hieratic and hieroglyphic writing as the symbol for the word "life" (fig 3 Anubis holds the key to life and death)
This is why the early Christians stole it, to replace the Ichthys Icthus symbol (fig 4) which was too obviously related to the vesica pisces and ancient symbol for the womb and the vagina, symbolising birth and rebirth (fig 5) flattened out the top to make it purely a symbol of phallic worship more related to the ethos of the male dominated church.(fig 6)

@LenHazell53 Watch the movie, please, Len. You obviously haven't .

Michael Curtiz' film The Egyptian is loosely based on a novel by Finish author Mika Waltari and is a VERY loose retelling of the Amarna heresy of Akhenaton.
Mr Waltari was not an Egyptologist, nor was he a very good writer, Hollywood even less less well versed mixed up the name Ak-hen-Aton meaning servant of the Sun the word Ankh (life) and based their whole silly story around this mistake.
In reality Akhenaton banned the use of All Symbols of the ancient gods, replacing them with worship of the monotheistic great Aten or Aton the sun disk including the Ankh which was thought to be highly heretical and far too sexual.

@Robecology movies are not actual history........

@LenHazell53 Now you're talking wisdom...and if you are as learned as you suggest you know that the Ankh was established by Ahenaton. Young Tut (Tutankhaton) was last to "push" the symbol...which by his reign was seen as a rebellious one...and was then banned and the wearers of it ostracized.

Again...to me the ankh has no spiritual connection, just that it symbolizes the sun on the horizon...which, as a scientist...I appreciate.

@Robecology WTF are you talking about?
Tutankhaton was the birth name of Tut-Ankh-Amun, and was changed when he became a puppet ruler for the priesthood, as explained above. Of course he pushed the old symbols, his life depended on it.
If by Ahenaton (Who does not exist) you mean Akhenaton you are wrong. As was the film you seem to be basing your knowledge on who call him Akhnaton.
The Ankh as a religious symbol dates from the Early Dynastic Period (3150 - 2613 BCE) and early examples can be found even earlier than that in the pre-dynastic period, during the twin goddesses of the upper and lower Nile Wadjet and Nekhbet, worship periods. This was at least 2000 years before the time of the 18th dynasty.

If you are an honest scientist you ought to be more concerned with facts that with what "feels" appreciable

@LenHazell53 Thanks for correcting me. I was 13 when I first read about the Ankh in the "Egyptian" story....It must have been the late 50's....and I fell in love with the concept . Then I saw the movie andI was hooked...I had to have and wear an ankh.

It's one of my favorites.