These may look like digital paintings, but they were all created in Microsoft Excel by Tatsuo Horiuchi, a 73-year-old Japanese who started playing with the spreadsheet software 13-years-ago. He says, “Graphics software is expensive but Excel comes pre-installed on most computers. And it has more functions and is easier to use than [Microsoft] Paint.” He actually won an Excel Autoshape Art Contest in 2006. Click here to view the first image in today’s viral picture gallery. Continue reading for a viral video of astronauts aboard the ISS growing a water bubble.