Mercury, Venus, Mars, Saturn and Jupiter are about to line up, for the first time in more than a decade, letting us to observe them with naked eye. This arrangement has been visible since 20th January 2016. But the planets will be more apparent as we step into February and the best day to spot these celestial objects would be 5th of February. These planets will remain aligned and be visible till 20th February.
This event doesn’t have much significance in astronomy other than it is rare.