Science

Follow PBS NewsHour’s complete coverage of Science and Technology stories.

Jan 07

It turns out, like us, stars slow down in their old age. That observation is the key to a new method astronomers are using to accurately tell the age of cool stars — stars that match the size of, or…

Private spaceflight agency SpaceX scrubbed its launch early Tuesday morning of a rocket intended to supply the International Space Station, because of a technical glitch with the booster’s upper-stage motor, NASA reported.

Jan 05

Why ground squirrels turn into ninjas over nothing

In a standoff with a rattlesnake, the California ground squirrel stares down its opponent. It might kick sand at the snake, whipping its fuzzy tail back and forth in a “come and get me” taunt. The snake lounges and the…