A Spectacular Grazing Occultation for Aldebaran at Dawn

By David Dickinson - July 05, 2018 09:02 AM UTC | Stars
An unusual celestial spectacle unfolds for observers around the Great Lakes region next Tuesday at dawn. The Moon has been faithfully occulting (passing in front of) the bright star Aldebaran for every lunation now since January 29th, 2015. This split second events have touched on nearly every farflung corner of the Earth. Now the United States and Canada get to see the penultimate event, as the waning crescent Moon occults Aldebaran one last time for North America.
Continue reading

Astro Challenge: Spotting 4 Vesta at its Best for Decades

By David Dickinson - June 06, 2018 10:35 AM UTC | Planetary Science
Up for a challenge? Planetary action is certainly heating up this summer: Jupiter passed opposition last month, Saturn does so in June, and Mars reaches favorable viewing next month. And with dazzling Venus in the west and Mercury to joining it starting in late June, we'll soon have all of the naked eye classical planets in the evening sky. Now, I want to turn your attention towards a potential naked eye object, you've probably never seen: asteroid 4 Vesta.
Continue reading