Tag Archives: PLivjPDlt6ApRiBHpsyXWG22G8RPNZ6jlb

Solar System 101 | National Geographic

– [Narrator] Our solar system is one of over 500 known solar systems in the entire Milky Way galaxy. The solar system came into being about 4.5 billion years ago, when a cloud of interstellar gas and dust collapsed, resulting in a solar nebula, a swirling disc of material that collided to form the solar… Read More »

Black Holes 101 | National Geographic

(mysterious music) – [Woman] Black holes are among the most fascinating objects in our universe, and also the most mysterious. A black hole is a region in space where the force of gravity is so strong, not even light, the fastest known entity in our universe, can escape. The boundary of a black hole is… Read More »

Flat Earth vs. Round Earth | Explorer

you think that with the beautiful photographs that we have of our round blue planet it would convince any doubters but there are still some who insist that the world is flat correspondent Mariana van Zeller discovers more about this fast growing movement in California I’m Mariana van Zeller and I’m in Southern California to… Read More »