Ask The Science Experts

At 20,320 feet high, Mt. McKinley in Alaska is the highest point in the United States (as well as all of North America). The highest point in the continental United States is Mt. Whitney in California at 14,494 feet. The lowest point is Death Valley, California at 282 feet below sea level. This is also […]

Since you can’t actually weigh an object in a weightlessness environment, astronauts use body mass measurements to determine a difference in weight. This isn’t as trivial as it seems however.