Your weight changes on other planets and moons due to different gravitational pulls. Weight is how much gravity pulls on you; mass (amount of matter) stays the same. Newton's Law of Gravitation ...

As the New Horizons spacecraft is approaching Pluto, it's getting some great shots. The animation below shows Pluto and Charon as they orbit each other. When a planet (or dwarf planet) has a satellite ...

Astronomers said Thursday they had accurately calculated the mass of the Milky Way for the first time, using new data sets that include the weight of dark matter. In a collaboration between NASA and ...

Lean Body Mass (LBM) is simply an estimation of how much you weigh without the body fat – how much your bones, organs and muscles weigh. As the other factors are assumed to be relatively static, by ...

The terms weight and mass are often used incorrectly. Phrases like ‘a bag of sugar weighs 1 kg’ are not scientifically correct. This means that a 1 kg mass would be attracted to Earth by a force of 10 ...

Atomic Number and Mass Number of Elements: Atoms are the building blocks of matter. They are responsible for the format of all living and non-living things. Understanding their molecular structure and ...

Does the Milky Way look fat in this picture? Has Andromeda been taking skinny selfies? Using a new, more accurate method for measuring the mass of galaxies, and international group of researchers has ...