The well-known singer Katy Perry will participate in the first mission with an entirely female crew aboard the Blue Origin rocket. As part of the New Shepard project, led by Lauren Sánchez, Katy Perry ...

Private citizens and companies may one day begin to permanently settle outer space and celestial bodies. But if we don’t enact governing laws in the meantime, space settlers may face legal chaos.

After dusk on Friday night, seven planets are expected to align in the night sky. But you'll need binoculars or a telescope ...

After one such explosion blows a star's outer layers into space, the core remains—but it no longer produces nuclear fusion. With no outward pressure from fusion to counterbalance gravity's ...

I looked up at that epic black domed sky and thought the stars and planets were real ... suffered a massive outer-space hangover/letdown, where it suddenly seemed as if we’d shot our wad ...

Multi-line reverberation mapping of active galactic nuclei (AGNs) reveals significant radial ionization stratification and distinct kinematic behaviors in their broad-line regions (BLRs).