Onlookers will be able to catch the best glimpse of this alignment which will include Mercury, Venus, Mars, Jupiter and Uranus tonight, just after sunset. That's Tuesday. Much of the display will become visible on Friday and will continue to do so over the next couple of weeks. That according to Cameron Hummels, who is a computational astrophysicist at the California Institute of Technology. Alignments such as the one that appears here appears every few years or so