Over the next five mornings in the pre-dawn hours, five planets could be visible in the eastern sky in a fairly rare planetary alignment.
As viewed from east to west, you should be able to see Mercury, Venus, Mars, Jupiter and Saturn, which is in the order of their distance from the sun, with Mercury being closest and Saturn being the furthest. Earth’s orbit is between Venus and Mars.“Mars, Saturn and Mercury are the challenges,” said Jeff Hunt, a retired Illinois planetarium director whose website — whenthecurveslineup.com — tracks interesting celestial events for amateur sky-gazers. “The real challenge is Mercury.
The problem isn’t Mercury’s size but its proximity to the sun. Because of that, pre-dawn twilight will render it invisible not long after it rises over the eastern horizon. If you want to see it, you’re going to need binoculars, Hunt said. “Mercury is not easy to see, and it’s hard to photograph,” Hunt said. “It is somewhat bright, but it’s in bright twilight. If it were out there by itself where Mars is, in a dark sky, it would be much brighter than Mars and much brighter than Saturn. You have to have a good horizon . You have to be outside looking for it about 45 minutes before sunrise. Thirty minutes before the sunrise, the sky is way too bright.
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