The second largest crater in the world was formed by the impact of a comet according to a 2014 study by researchers in Canada and Ireland. Colliding with Earth almost 1.85 billion years ago, the estimated diameter of the crater is 81 miles (130 km).
How big is a bacteria compared to a human cell? The size of a typical bacterial cell is 0.5-5.0 micrometers, a average human cell is 10 micrometers.8 people found this useful.Edit.he consensus among biologists is that only 5 to 10% of the trillions of cells in our bodies are human. The rest are alien cells: yeast, fungi, bacteria, viruses.
Using bacterial DNA analysis, the scientists sampled bacteria found on healthy human skin at 20 different spots on the body. The human body contains 10 times as many bacterial cells as it does human cells.sing bacterial DNA analysis, the scientists sampled bacteria found on healthy human skin at 20 different spots on the body. The human body contains 10 times as many bacterial cells as it does human cells.