“Scientists had predicted Earth should have Trojans, but they have been difficult to find because they are relatively small and appear near the sun from Earth’s point of view.” By way of a friend, NASA researchers have discovered Earth’s very own trojan asteroid. (It’s the green circle above.) “Trojans are asteroids that share an orbit with a planet near stable points in front of or behind the planet…The asteroid’s orbit is well-defined and for at least the next 100 years, it will not come closer to Earth than 15 million miles.“