All the planets of the solar system that could be visible to the naked eye will be on display simultaneously in the predawn sky starting on January 20, for 2 to 4 weeks. The celestial event will show all the five bright planets forming a diagonal line across the sky. You will need to get up early and the view will of course depend on weather conditions, but at least you have several days over the coming weeks to see the planetary alignment. EarthSky reports: The last time that all five visible planets (Mercury, Venus, Mars, Jupiter and Saturn) appeared in the same sky together was over 10 years ago, from December 15, 2004, to January 15, 2005. The next presentation will again happen for a period of about one month, starting soon! All five planets should be visible simultaneously before dawn beginning around January 20, 2016. And they’ll remain visible before dawn from about January 20 to February 20, 2016. By bright or visible planet, we mean any planet in our own solar system that’s easily viewed without an optical aid and that has been watched by our ancestors since time immemorial. In their outward order from the sun, the five bright [...]