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Ở Sài Gòn, Có Một Đen Đá Rất Hay Ho
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A black hole dubbed the Unicorn may be galaxy s smallest one
Staff Reporter | Apr 22, 2021 03:43 PM EDT
A black hole dubbed the Unicorn may be galaxy s smallest one (Photo : Ohio State illustration/Lauren Fanfer/Handout via REUTERS)
Scientists have discovered what may be the smallest-known black hole in the Milky Way galaxy and the closest to our solar system - an object so curious that they nicknamed it the Unicorn.
The researchers said the black hole is roughly three times the mass of our sun, testing the lower limits of size for these extraordinarily dense objects that possess gravitational pulls so strong not even light can escape. A luminous star called a red giant orbits with the black hole in a so-called binary star system named V723 Mon.
Modern classics
published : 23 Apr 2021 at 04:00 Seamaster 300 Bronze Gold.
From its first professional diver s watch, Omega has extended the Seamaster family to include Aqua Terra, Diver 300M, Planet Ocean and Heritage Models.
This year, the Swiss brand revisits the Seamaster 300 from the 1950s and the Diver 300M, launched in 1993, to deepen its expertise in timepieces worn underwater.
Alongside Speedmaster and Railmaster, the Seamaster 300 was a part of the Professional Trilogy created in 1957.
The original watch was equipped with an ingenious high-pressure water-proofing system, and its bezel was designed with a safety feature to prevent accidental turning during dives. The black dial featured luminous indexes and large hands for easy reading underwater.
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