NASA astronaut Michael Hopkins tends to radish plants growing for the Plant Habitat-02 experiment.
Expedition 64 Flight Engineer Michael Hopkins is pictured during science activities aboard the International Space Station.
Expedition 64 Flight Engineer Michael Hopkins conducts research operations inside a portable glovebag.
Expedition 64 Flight Engineer Kate Rubins services engineered heart tissue samples inside the Life Sciences Glovebox.
Expedition 64 Flight Engineer Shannon Walker sets up hardware inside the Microgravity Science Glovebox.
Chaos at the Heart of the Orion Nebula
The International Space Station flies 262 miles above the Atlantic Ocean into an orbital sunrise.
The waxing gibbous Moon, the phase before it becomes a Full Moon, is pictured from the International Space Station.
The waxing gibbous Moon, the phase before it becomes a Full Moon, is pictured from the International Space Station.
Expedition 64 Flight Engineer Soichi Noguchi poses for a holiday season portrait.