Trojan asteroid seen in Earth's orbit by Wise telescope. Read more about sharing. Astronomers have detected an asteroid not far from Earth, moving in the same orbit around the Sun. The 200-300m-wide rock sits in front of our planet at a gravitational sweet spot, and poses no danger.
Calories Burned. A half mile is a relatively short distance to run, so you shouldn't expect a big calorie burn. According to the website Cool Running, a 200-pound person will burn 79 calories running half a mile. A 175-pound person will use less energy, burning just 69 calories per half mile.
Weight Loss. A single pound of fat is equal to 3,500 calories. Running for half a mile per day will put a dent in this goal, but the results won't be quick. At this rate a 200-pound person would need to run half a mile each day for 44 days to lose just one pound.