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 ...

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 ...

Body Mass Index, or BMI, is a person’s weight in kilograms divided by the square of his/her height in meters. The National Institute of Health (NIH) has now defined BMI to be the deciding parameter to ...

BMI For Adults. Flash Player 9 is required. The body mass index, or BMI, is a number calculated from a person's weight and height. The number itself doesn't measure body fat directly, but it provides ...

Researchers used a powerful X-ray beam to determine the number of electrons in a spread of 46 chromosomes which they used to calculate mass. Mass of human chromosomes have been measured for the first ...