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.
Preheat grill for high heat. In a large bowl, mix together the ground beef, Cheddar cheese, horseradish, salt, pepper, garlic powder, and bacon bits using your hands. Shape the mixture into 4 hamburger patties. Lightly oil the grill grate. Place hamburger patties on the grill, and cook for 5 minutes per side, or until well done. Serve on buns.