A Mercury-bound spacecraft launched from Earth must travel over 91 million kilometres (57 million miles) into the Sun's gravitational potential well. Mercury has an orbital speed of 48 km/s (30 mi/s), whereas Earth's orbital speed is 30 km/s (19 mi/s).
The interior of a raw hamburger usually does contain bacteria, and is safest if cooked well done.. Because E. coli is killed at 155 degrees Fahrenheit, the USDA sets the minimum safe temperature for ground beef at 160 degrees Fahrenheit.
Indoor Grill Meat Cooking Times: 1  Flank Steak: 12 to 14 minutes. 2  Hamburgers: 14 to 17 minutes. 3  Precooked Hot Dogs or Sausages: 5 to 7 minutes.  Chicken Breast: 12 to 15 1  minutes. Fish Fillets or Shrimp: 5 to 7 minutes.