Archive for September 21, 2018

09/21/2018 – Ephemeris – Twilight talk and star, actually planet, party tonight in Thompsonville

September 21, 2018 Comments off

Ephemeris for Friday, September 21st. The Sun will rise at 7:28. It’ll be up for 12 hours and 13 minutes, setting at 7:42. The Moon, 3 days before full, will set at 4:44 tomorrow morning.

Tonight members of the Grand Traverse Astronomical Society will hold a twilight talk and a star party at the Betsie Valley District Library in Thompsonville. It starts at 7 p.m. with a talk about how the Moon came to be and the features that will be visible tonight by yours truly. Where did the Moon come from? That mystery has baffled astronomers for ages. The rocks the Apollo astronauts brought back from the Moon offer clues to a possible answer. After which the Moon, Mars and Saturn will be visible. If cloudy, the talk will go on as scheduled, though the observing part of the evening will be replaced with a look at the skies via computer projection and a preview of the autumn season in the skies.

The times given are for the Traverse City/Interlochen area of Michigan. They may be different for your location.