 Here's an asteroid that looks like a comet. This asteroid belongs to a class of icy bodies found between Jupiter and Neptune called centaurs. It most likely originated from the Kuiper Belt. Visible light snapshots by Hubble reveal that the object shows signs of comet activity, such as a tail, outgassing in the form of jets, and a coma of dust and gas. Its tail is roughly 644,000 kilometers long, that's 400,000 miles. Seeing outgassing activity on a comet 750 million kilometers, or 465 million miles away from the Sun, where the intensity of the sunlight is only 1 25th as strong as on Earth, surprised the researchers. Scientists create these effects via internal solid water, sublimating into gas as the temperature goes up on the Sun's side of the frost line. But this asteroid is way too far away from the Sun for this to be the case. But observations by Spitzer showed the presence of carbon monoxide and carbon dioxide gas. These gases would sublimate even at the low temperatures found at their location 750 million kilometers, or 465 million miles away from the Sun.