There may be an ultraheavy explanation for the mystery surrounding the origins of the highest-energy particles ever observed.

Merging black holes and neutron stars have unusual oval orbits prior to colliding and merging, which challenge the laws of ...

That extends to planets, too. Young stars form with disks of gas and dust around them, and those disks birth planets. If a ...

Theories of quantum mechanics predict that some particles can exist in superpositions, which essentially means that they can be in more than one state at once. When a particle's state is measured, ...