[NEWS] Five space science links: Psyche, Proxima Centauri b and c, Voyager and Pioneer, humans

[rfmcdonald]

• Evan Gough at Universe Today notes the possibility that the asteroid Psyche, in its hot youth, might have had volcanoes ejecting molten iron.


• Matt Williams at Universe Today notes a new paper suggesting that, on suitable exoplanets orbiting red dwarfs like Proxima Centauri b, their stars produce environments not much more hostile than those suffered by the early Earth.


• Nadia Drake at National Geographic notes the news of the possible discovery of a second exoplanet at Proxima Centauri, c, in a five-year orbit.


• Matt Williams at Universe Today shares a study tracing the paths of the Voyager and Pioneer spacecraft over millennia of movement in interstellar space.


• Jason Pontin at WIRED shares the result of a study of twin astronauts Scott and Mark Kelly, noting how space affected Scott Kelly in negative ways. Long-distance human spaceflight is possible, but more work is definitely needed for it to be safe, even survivable.