For the first time, researchers have detected a streamer of gas flowing from a massive outer disc toward the inner reaches of a binary star system. This never-before-seen feature may be responsible for sustaining a second, smaller disc of planet-forming material that otherwise would have disappeared long ago. Half of Sun-like stars are born in binary systems, meaning that these findings will have major consequences for the hunt for exoplanets. (ESO)
Glorious Sirius looks like one bright star but is actually a binary system composed of 2 stars (Sirius A, the brighter & Sirius B, a faint white dwarf). Together, they glitter like a silver-blue diamond! Binary stars are too close to be distinguished from one another when observed from Earth and are hence mistaken for one. The two stars of a binary typically orbit about a common center of mass. Sirius is easy to see in the spring and winter skies.
Death Star: Eta Carinae, one of the closest stars to Earth is huge and unstable and will likely explode in a supernova in the relatively 'near future' (On an astronomical timeline this could be a million years from now). via NASA #Eta_Carinae #Supernova #NASA
When seen in visible light Zeta Ophiuchi appears as a relatively dim red star surrounded by other dim stars and no dust. But in this infrared image taken with NASA's WISE a completely different view emerges. Zeta Ophiuchi is actually a very massive, hot, bright blue star plowing its way through a large cloud of interstellar dust and gas. It was likely once part of a binary star system with an even more massive partner that exploded as a supernova, blasting away most of its mass.