Are cell mutations always bad? A mutation is a change in the genetic material of an organism. We are made from trillions of cells, each with a nucleus composed of DNA â a set of instructions that tells the cell what to do. Cells copy themselves with astonishing accuracy, but every now and then a piece of code is copied incorrectly.
Seven eclipses occur in a minimum of 12 lunar months (about 354.37 days). Given that the calendar year is only about eleven days longer than 12 lunar months, the first of the seven eclipses has to come in early January for the seventh eclipse to occur before the end of the year.
A partial eclipse happens when the Earth moves between the moon and the sun, but not completely. Futurecast for 7 p.m. to 8 p.m. Friday, February 10th where a break in the clouds should allow for eclipse viewing. A lunar eclipse starts everything off Friday night. The moon will pass into Earthâs penumbra, or outer shadow. The moon wonât be blacked out like in a full eclipse.