The Castlestrange stone is located in the grounds of “Castlestrange House” near Athleague in County Roscommon. It is a granite boulder decorated with flowing spirals in the La Tène style, dating from the Iron Age period between 500 BC and 100 AD.
It is believed that there was a strong Continental influence in Ireland at the time, which the carver was imitating.
Only three other stones of this type have been found in Ireland, of which the Turoe stone in County Galway is the best known. The use of the stones is not known but it is assumed they served some religious or ritual purpose.
The stone is a protected National Monument.
Neptune has not completed an orbit since it was discovered.
Actually it has, but only just. It was discovered Sept 23, 1846 and has an orbital period of 164.79 years. That would mean it completed that orbit mid June of 2011.
Interestingly, Galileo’s logs show that he actually observed Neptune on December 28, 1612, and again on January 27, 1613 but mistook it for a fixed star, not only because of its distant orbit, but also because its orbit was just starting a retrograde motion relative to Earth rendering it practically motionless.
Blue moon over Manhattan