Voyager 1 will be one light-day, 16 billion miles, from us next year
It takes a beam of light a single day to travel 16.1 billion miles, a distance known as…
Astronauts stranded on Chinese space station by debris. What happened?
Three veteran Chinese astronauts are stuck – for now – aboard the Tiangong space station after their return…
We explain how it works
On Sept. 22, President Donald Trump pushed an unproven link between Tylenol and an increase in autism in…