Serbia gets Chinese-made Sinopharm jabs

Serbia became one of the first European countries to receive a Chinese-made COVID-19 vaccine on Saturday when one million doses of a jab produced by Sinopharm arrived at Belgrade airport.

New Horizons spacecraft answers the question: How dark is space?

How dark is the sky, and what does that tell us about the number of galaxies in the visible universe? Astronomers can estimate the total number of galaxies by counting everything visible in a Hubble deep field and then multiplying ...

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