But what about beyond Mars? Would it be possible one day for astronauts to walk on other planets? As the next planet out from Mars, could a Jupiter walk be a part of our future? Well, no ...

The four-planet lineup that began in January concludes by mid- to late February, as Saturn sinks increasingly lower in the sky each night after sunset, according to NASA. While Mercury will briefly ...

Need a break? Play the USA TODAY Daily Crossword Puzzle. Star Walk states on its website that four of the planets (Mercury, Venus, Jupiter, and Mars) "will be easily visible to the naked eye ...