When far from Sun, they remain frozen. In this state comets are sometimes referred to as _______since about half of their material is ice. fact1. Comets are believed to be the oldest, most primitive bodies in the solar system, possibly comprised of some of the basic building blocks of life.
Spare ribs and pork shoulder are both cooked in an oven at the same temperature(~225F) for me. The difference is time. A pork shoulder takes at least 8 hours but usually around 12 hours to give good pulled pork. Ribs are closer to 3-4 hours for the meat to get tender but not so tender that they fall off the bone.
Wrap the ribs in aluminum foil to speed up the cooking process. Place the wrapped ribs in a 400-degree-Fahrenheit oven, or on a gas or charcoal grill heated to 400 with the lid closed. Cook the ribs for about an hour until the meat is tender. Check the ribs for doneness with an internal meat thermometer. Remove the ribs when the meat reaches 190 degrees Fahrenheit. Remove the ribs from the foil, baste them with a prepared bottled barbecue sauce, and place them on a hot grill for about 30 minutes, just to get the outside of the ribs seared and crispy.