Astronomers have reported observations of a rare star system consisting of one star orbiting a system of three more tightly ...

Neutron stars harbor some of the most extreme environments in the universe: their densities soar to several times those of ...

The four-star system features three stars in stable orbits, plus a fourth at a distance equal to Jupiter's orbit around our Sun.

"TIC 120362137 is currently the most compact known 3+1-type quadruple star system." ...

Astronomers have created the largest and most detailed 3D map yet of a glowing signal from the early universe, revealing hidden galaxies and gas from 9-11 billion years ago. By analyzing faint ...