Dream Chaser spaceplanes to launch on ULA Vulcan…

Sierra Nevada Corp. will launch its winged Dream Chaser spaceplane atop United Launch Alliance's new Vulcan rocket for at least six NASA-contracted unpiloted cargo flights to the International Space Station (ISS) starting in 2021, company…

Milky Way black hole lights up: Our galaxys…

Astronomers spotted something they call "unprecedented" while observing the closest supermassive black hole to earth this spring – an eruption and massive burst of infrared radiation. And scientists can't say definitively what caused the flash.…