The alphabet song won't help you in the case of this viral riddle Social media’s newest brain game has a ton of people stumped. So stumped, in fact, that the riddle has gone viral. People are ...

Some of the people who work at NASA spend their time pouring over the gobs of images that come into the space agency from various satellites, astronauts on the ISS, and telescopes around the world.

A few years ago while working on a story about wildfires, writer Adam Voiland of NASA Earth Observatory spotted a satellite image of a smoke plume over Canada in the shape of the letter ‘V.’ The image ...