Black Holes ExplainedOverviewImagine a region in space where the force of gravity is so strong that nothing—not even light—can escape. A region with physical conditions so extreme that they have not yet been reproduced in any terrestrial laboratory. A region so dense that an object as tiny as a walnut would have the same mass as our entire planet.First airedMay 1, 2009URL slugblack-holes-explainedGenresDokumenttiKuvatJulisteTaustaEi kuvaaKuvakeEi kuvaaBanneriTuotantokaudetErikoisjaksot0 jaksoaTuotantokausi 112 jaksoaNäyttelijät ja työryhmä
