Add Yahoo as a preferred source to see more of our stories on Google. Some stars in our galaxy, known as hypervelocity stars, move much faster than most other stars in the Milky Way. In fact, they are ...

Wide binary stars with separation greater than about 2000 astronomical units are interesting natural laboratories that allow a direct probe of gravity at low acceleration weaker than about 1 nanometer ...

Faint flickers in the night sky have puzzled astronomers for decades. These subtle changes in brightness come from violent ...

Microquasars in our Milky Way galaxy have emerged as the most extreme particle engines, accelerating cosmic rays to unprecedented energies. These compact objects, found in binary star systems, rival ...

The supermassive black hole at the center of our Milky Way galaxy is associated with wanton destruction, but a recent discovery throws that assumption into question. A team of international ...

Astronomers have confirmed a giant planet orbiting a tightly bound pair of young stars, marking a first in direct exoplanet imaging. The planet, known as HD 143811 AB b, is the closest-in world ever ...

For the first time, astronomers have spotted a rapidly spinning neutron star that is gravitationally bound to a helium star companion. The discovery of this unusual binary system helps confirm a long ...

A nearby binary star system is bereft of giant planets, but scientists think it may still be a decent place to look for life. Binary star system Eta Cassiopeiae, located just 19 light-years away, ...

How many Earth-sized exoplanets orbit binary star systems (two-star systems)? This is what a recent study accepted by Astronomy & Astrophysics hopes to address as an international team of researchers ...

Some stars in our galaxy, known as hypervelocity stars, move much faster than most other stars in the Milky Way. In fact, they are traveling so fast that our galaxy’s gravity can’t hold onto them and ...