Black holes have no size, but have a huge mass — and there's an enormous one right in the middle of our galaxy.

Wissenschaft & Technik
Great Moments In Science Folgen
From the ground breaking and life saving to the wacky and implausible, Dr Karl Kruszelnicki reveals some of the best moments in science.
Folgen von Great Moments In Science
249 Folgen
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Folge vom 13.11.2018Black hole in the Milky Way: part one
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Folge vom 06.11.2018Geotagged photosAre you accidentally sharing your precise location, whenever you upload a photo?
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Folge vom 30.10.2018Measure EarthReckon you could measure the circumference of the Earth using just a stick and some basic geometry?
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Folge vom 23.10.2018Cigarettes radioactiveYou've probably heard cigarettes are bad for you — but did you know tobacco contains radioactive material?