A pair of spacewalking astronauts completed a four-year effort to modernize the International Space Station's power grid on Monday, installing one last battery.

On January 31, 1961, an intrepid chimpanzee called Ham was launched on a rocket from Cape Canaveral in the United States, and returned to Earth alive. In this process, he became the first hominin in space.

In the 1950s, it was unclear whether humans could survive outside Earth—both physically and mentally. The science fiction writer and warfare expert Cordwainer Smith wrote about the psychological pain of being in space.

Plants, insects and animals had been taken to high altitudes in balloons and rockets since the 18th century. The Soviet Union sent the dog Laika into orbit on Sputnik 2 in 1957. She died, but from overheating rather than the effects of space travel itself.

While the USSR focused on dogs, the US turned to chimpanzees as they were the most like humans. The stakes became higher when US President John F. Kennedy promised to land humans on the Moon by the end of the 1960s.

Biography of a non-human astronaut

Ham was born in 1957 in a rainforest in the Central African nation of Cameroon, then a French territory.

A Maine company that's developing a rocket to propel small satellites into space passed its first major test on Sunday.

Brunswick-based bluShift Aerospace launched a 20-foot (6-meter) prototype rocket, hitting an altitude of a little more than 4,000 feet (1,219 meters) in a first run designed to test the rocket's propulsion and control systems.

It carried a science project by Falmouth High School students that will measure flight metrics such as barometric pressure, a special alloy that's being tested by a New Hampshire company—and a Dutch dessert called stroopwafel, in an homage to its Amsterdam-based parent company.