NASA astronauts joke around with an optical illusion on the ISS | Space photo of the day for April 15, 2026

NASA astronaut Chris Williams extends his hand, appearing to "hold" the Cygnus capsule from the ISS as his pal, astronaut Jack Hathaway, watches. (Image credit: ISS/NASA/SWNS)

Even in space, we love to make our friends laugh.

On April 13, NASA astronauts Chris Williams and Jack Hathaway worked to capture Northrop Grumman's Cygnus XL spacecraft from aboard the International Space Station (ISS) using the Canadarm2 robotic arm. But before the successful capture, the pair had a bit of fun.