A near-complete census of our interstellar neighborhood hopes to answer how stars, brown dwarfs and rogue planets form ...

Arcturus (at a magnitude of -0.05), one of the few stars mentioned by name in the Bible, is a giant, about 25 times the diameter of our sun and 36.7 light years away. Boötes is chasing the Bears with ...

Other astronomers used similar techniques and measured the parallax of Sirius, the brightest star in the night sky. Sirius’ parallax is the very thin angle formed by the positions of Earth ...

Rigel is to the right of the stars of Orion's belt before midnight. Closer to the horizon and to the left is Sirius, the brightest star in the sky and the alpha star of Canis Major, the Bog Dog.

If you were to ask most people to name the brightest star in the night sky, chances are they'd confidently say, "the North Star." It's a common assumption, and it makes sense when you consider how ...

How big it is: 865,000 miles (1.392 million kilometers) across How far away it is: 93 million miles (150 million km) What ...

A computer simulation shows how two neutron stars of unequal mass merge, form a black hole and spit out a jet of high energy matter.

Astronomers capture the universe’s brightest era, revealing when galaxies like the Milky Way first formed and began to shine.

Among the instruments hunting exoplanets is NASA's Transiting Exoplanet Survey Satellite (TESS), a space-based observatory that looks for these alien worlds by monitoring the brightness of stars.

The Oklahoma City Thunder are heading to the NBA Finals, and their star trio is the driving force. Over the past several weeks, many have coined this as the NBA’s “weak link” era ...

CRISPR Therapeutics is paying $25 million upfront to work on multiple siRNA targets with Sirius Tx with an early focus on the next-gen thrombotic disease asset SRSD107. That drug, Sirius’ lead ...