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Mimosa
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Two intersecting circles that return with steps of 2 and 5 with very deep intersectins beyond the centres of the circles.

Mimosa designated ? Crucis (Beta Cru, ? Cru), is the second-brightest object in the constellation of Crux, after Acrux (Alpha Crucis), and the 20th-brightest star in the night sky. It forms part of the prominent asterism called the Southern Cross. Mimosa is a binary star or a possible triple star system.

Although Mimosa is at roughly ?60 declination, and therefore not visible north of 30 latitude, in the time of the ancient Greeks and Romans it was visible north of 40 due to the precession of equinoxes, and these civilizations regarded it as part of the constellation of Centaurus.

Mimosa, which is derived from the Latin for 'actor', may come from the flower of the same name.

Based on parallax measurements, Mimosa is located at a distance of 280 ly (86 pc) from the Earth. In 1957, German astronomer Wulff-Dieter Heintz discovered that it is a spectroscopic binary with components that are too close together to resolve with a telescope. The pair orbit each other every 5 years with an estimated separation that varies from 5.4 to 12.0 Astronomical Units. The system is only 8 to 11 million years old.

Mimosa is represented in the flags of Australia, New Zealand, Samoa and Papua New Guinea as one of five stars making up the Southern Cross. It is also featured in the flag of Brazil, along with 26 other stars, each of which represents a state. Mimosa represents the State of Rio de Janeiro.

The design of this puzzle was proposed by Andrei Erashkevich.
It consists of two intersecting circles that return with steps of 2 and 5 and this with very deep intersectins beyond the centres of the circles.

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