(PRESS RELEASE) DALLAS — The American Gem Trade Association (AGTA) announced the winners of the 2024 AGTA Spectrum & Cutting Edge Awards. This year is extra special because it marks 40 years of ...

"Black opal is the most amazing gemstone on the planet," he says. "The images that come out of it, especially at magnification, are just totally unexpected." Sometimes this was the only chance to ...

8 x 0.5 in. (20.3 x 1.3 cm.) ...

Influence of a Black Hole's Spin: First Evidence of Precession in Ultraluminous Accretion Disks Oct. 7, 2024 — Researchers conducted innovative simulations of spinning black holes grounded in ...

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