We are saddened by the loss of Sen. John Glenn, the first American to orbit Earth. He also became a U.S. senator and later, at the age of 77 when he flew on the space shuttle, he became the oldest person to fly in space. Our deepest condolences go out to his dear wife Annie, his children, and the people who were inspired by him and loved him around the world. He was a friend, an astronaut and true hero. Godspeed, John Glenn. Ad astra.

The coconut crabs have the most powerful pinch of all crabs.

Astronaut Thomas Pesquet of the European Space Agency captured this photograph from the International Space Station on Nov. 25, 2016, and shared it on social media. Pesquet commented, "Sunrises. We experience 16 sunrises every 24 hours on the International Space Station as it takes us 90 minutes to do a complete orbit of our planet flying at 28,800 km/h. Of course we don't notice most of the sunrises as we are working inside, but every now and again I can take a picture." Image Credit: ESA/NASA

Stephen Hawking & NASA - National Aeronautics and Space Administration are teaming up to create a space explorer that moves 800 times faster than anything a human has ever created... @science