Question: Do you belive about the dust cloud that covered the sky and blocked the sun?

Laura Soul answered on 14 Mar 2013:

If you mean the one that happened when the meteorite that made the dinosaurs go extinct hit the Earth then yes I do. There is good evidence for this, first of all we have seen the size of the crater where the meteorite hit so we know the volume of rock that the meteorite threw up into the air when it hit. Also if you look over the whole earth at the rocks that used to be at the surface at the time that the meteorite hit then you can see that they have a layer of clay on them that is the same as the clay from where the meteorite hit. This means that it must have been thrown up into the air in a dust cloud and then floated round the atmosphere and then settled out again to the ground making the layer.

We know that it is very easy for dust cloud of fine particles of things like ash and clay to form and travel round the planet from watching what happens now when volcanoes erupt.

It’s hard to say whether the cloud would have completely blocked the sun, but given that we know how much rock dust got shot up in to the air, and how big the earth is, then we can say that it probably did, and that the dust would have mostly fallen to the ground again before a year was over, so the sun wouldn’t have been blocked for that long.