Spectroscopy.
Astronomers cannot locate extrasolar planets with telescopes because these planets are outside of our solar system and too far away for telescopes to directly observe. Instead, astronomers use indirect methods such as radial velocity and transit techniques to detect these distant planets.
Astronomers use various methods to discover extrasolar planets, also known as exoplanets. These methods include the transit method (detecting a planet as it passes in front of its star), the radial velocity method (detecting a wobble in a star's motion caused by an orbiting planet), direct imaging (taking pictures of exoplanets), and gravitational microlensing (observing the bending of light from a distant star due to a foreground planet).
not enough info
Orbiting satellites.
Composition.
Dexa, Bia, Skinfold measurements, Hydrostatic weighing
Foods are very complex products and they haven't a composition as a molecule.The composition of foods is determined by methods of analytical chemistry.
Scientific methods for determining body composition include Dual-Energy X-ray Absorptiometry (DXA), bioelectrical impedance analysis (BIA), air displacement plethysmography (Bod Pod), and underwater weighing. These methods measure the amount of fat, muscle, bone, and water in the body to provide accurate insight into an individual's overall body composition.
The chemical composition must be determined by analytical methods.
Analytical chemistry is the study of methods used to determine the chemical composition of materials.
there were many methods, from the more intimate shot to the back of the head, or beating to death to the distant anonymous gassing.
Timothy G. Lohman has written: 'Advances in body composition assessment' -- subject(s): Anthropometry, Body composition, Methods