5 planets to make rare alignment in early morning sky

Early morning stargazers will be treated with a rare spectacle that hasn't occurred since 2005. Five planets, located closest to Earth, will align in the sky.

Mercury, Venus, Mars, Jupiter and Saturn will all appear in the predawn sky from Jan. 20 to Feb. 20, giving people around the world plenty of opportunities to view the rare astronomical alignment.

The best time to view the quintet of planets will be an hour to an hour and a half before sunrise. Earlier than that, some of the planets will not be above the horizon and any later, the light from the sun will drown out the glimmer of the planets as daylight approaches.

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