Your Weight on Other Worlds Ever wonder what you might weigh on Mars or The Moon? Here's your chance to find out. <div class="js-required"><hr> This Page requires a Javascript capable browser <hr></div> Fill in your weight below in the space indicated. You can enter your weight in any unit you wish. Click on the "Calculate" button. Mass and Weight Before we get into the subject of gravity and how it acts, it's important to understand the difference between weight and mass. We often use the terms "mass" and "weight" interchangeably in our daily speech, but to an astronomer or a physicist they are completely different things. Weight is an entirely different thing. If you are in a spaceship far between the stars and you put a scale underneath you, the scale would read zero. The Relationship Between Gravity and Mass and Distance As stated above, your weight is a measure of the pull of gravity between you and the body you are standing on. The two "M's" on top are your mass and the planet's mass. Isaac Newton
The Gift of Animal Emotions: By Marc Bekoff, Ecology and Evolutionary Biology, University of Colorado, Boulder, Colorado; (marc.bekof@colorado.edu; ) As a scientist who's studied animal emotions for more than thirty years, I consider myself very fortunate. I love what I do. While stories about animal emotions abound, there are many lines of scientific support (what I call "science sense") about the nature of animal emotions that are rapidly accumulating from behavioral and neurobiological studies (from the emerging field called social neuroscience using fMRIs and PET scans). In scientific research there are always surprises. For example, spindle cells, which were long thought to exist only in humans and other great apes, have recently been discovered in humpback whales, fin whales, killer whales, and sperm whales in the same area of their brains as spindle cells in human brains. Emotions are the gifts of our ancestors.