A bundle of magnets and glass had a slight but detectable gravitational pull, pushing scientists closer to the boundary between classical and quantum physics. Reading time 3 minutes Despite keeping us ...

What is mass? It seems like a synonym for weight, but that isn’t quite right. Weight is how we measure the pressure that gravity exerts upon things. But mass? Mass is the actual presence of an item — ...

An artist's impression of the quantum experiment. (Courtesy: University of Southampton) The first technique capable of measuring the pull of gravity on a particle just microns in diameter could aid ...

One of the most unknown phenomena in modern physics is gravity. Its measurement and laws remain somewhat of an enigma. Researchers have revealed important information about a new aspect of the nature ...

Measuring the mass of stars, planets and moons in the universe usually relies on studying how their motion relates to other bodies nearby. For some objects that are on their own in space, however, ...

For distant stars with planets orbiting them, this gravitational information is key in determining whether any of those planets can harbor life. The new method is described in a study published today ...

Determining the size of an Earth-size exoplanet by the amount of starlight it blocks hundreds of light-years away once was the realm of science fiction. Measuring the mass of such a small planet based ...

How do you measure the mass of a star? Well, according to famed cosmologist Albert Einstein, you can try to solve this problem by looking at the subtle bending of starlight as it encounters the ...