Our readers have a lot of fun getting to grips with this one, working out how such an Earth would look – and what its ...

Stupid question, but […]” is a biweekly column answering the not-so-stupid questions that, at this point, we’re all too ...

Now, the kilogram is defined in relation to the Planck constant, the smallest amount of energy a photon can carry. With this constant, scientists can make ultra-precise mass measurements using the ...

A group of astronomers have made history by capturing an image of a record number of stars from a time when the universe was ...

Weight is the force acting on an object due to gravity - it has the unit newtons (N) and acts towards the centre of a gravitational field. So weight is a gravitational force on an object that has ...

NASA's James Webb Space Telescope has captured a unique image that revealed 44 individual stars in a galaxy 6.5 billion light ...

The work of Lämmerzahl and Ulbricht could thus serve as a basis for realizing mechanical units such as the kilo on the basis of gravitational force.

The team ultimately measured a gravitational pull of 30 "attoNewtons" on the particle. AttoNewtons represent a measure of ...