It's fun to think about how we know stuff. For instance, the sun has a mass of about 2 x 10 30 kilograms. That is such an enormous mass that it's difficult to comprehend. And if it's so difficult for ...

Astronomers cannot directly weigh celestial objects like galaxies; indirect methods are necessary. Mass determination leverages the relationship between gravity and mass, utilizing orbital periods and ...

How do we know the mass of a planet originally appeared on Quora - the knowledge sharing network where compelling questions are answered by people with unique insights. Answer by Geoffrey Widdison on ...

A gram is a standard unit of measurement. It is a word used to describe the mass of an object. You record the mass of light objects in grams. One way to measure the mass of objects is to use balance ...

There are quite a few fundamental constants. These are things like the speed of light (c) the charge on an electron (e), and the Planck constant (h). These constants are determined with some type of ...

Speed can make objects act as if they have more mass, but can you ever make an object appear to have less mass? It’s true that speeding an object up to considerable fractions of the speed of light ...

The breakthrough measurement of the white dwarf LAWD 37 made with Hubble gives us a hint of how the sun will look at the end of its life. When you purchase through links on our site, we may earn an ...

It is tempting to think that some materials are always heavier than other materials. For example, someone might say that metal is heavier than air. But it depends on how much of each material there is ...