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The Engraved Hourglass Nebula (also known as MyCn 18) is a young planetary nebula in the southern constellation Musca about 8,000 light-years from Earth. It was discovered by Annie Jump Cannon and Margaret W. Mayall during their work on an extended Henry Draper Catalogue (the catalogue was built between 1918 and 1924).
Oregon is one of the few places in the world where gem stone quality feldspar is found in large enough pieces to cut into gem stones for jewelry.3. What makes the Oregon Sunstone unique is the âSchillerâ effect that is caused by the microscopic copper platelets found in the stones.The âSchillerâ effect makes the Oregon Sunstone appear to âglowâ as if it was lit from within.regon is one of the few places in the world where gem stone quality feldspar is found in large enough pieces to cut into gem stones for jewelry.3. What makes the Oregon Sunstone unique is the âSchillerâ effect that is caused by the microscopic copper platelets found in the stones.