Helen of Troy refuge with Leda. The swan gained her affection, and the two mated. Leda then produced an egg, from which Helen emerged. The First Vatican Mythographer introduces the notion that two eggs came from the union: one containing Castor and Pollux; one with Helen and Clytemnestra. Nevertheless, the same author earlier states that Helen, Castor and Pollux were produced from a single egg. Pseudo-Apollodorus states that Leda had intercourse with both Zeus and Tyndareus the night she conceived Helen. On the other hand, in the "Cypria", part of the Epic Cycle, Helen was the daughter of Zeus and the goddess Nemesis.
LEDA 1000714 LEDA 1000714 LEDA 1000714 is a ring galaxy in the constellation Crater. LEDA 1000714 is one of a very rare group of galaxies called Hoag-type galaxies, named after the prototype, Hoag's Object – it is estimated that roughly 0.1% of all galaxies are this type. LEDA 1000714 is unusual because it is a Hoag-type galaxy with two nearly round rings, but with different characteristics. It has been nicknamed Burçin's Galaxy, after Burçin Mutlu-Pakdil, the leader of the photometric study of this galaxy. The structure and photometry of LEDA 1000714 was studied with significant detail in 2017. The core of the