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2. Dive light - Wikipedia

   en.wikipedia.org/wiki/Dive_light

   Backup lights are carried in case the primary light fails during the dive. This is particularly important in cave and wreck penetration diving, where the light is required to facilitate navigation out of the enclosed space. Cave divers are trained to carry three dive lights as a result of an accident analysis by Sheck Exley published in 1977 ...

3. Gravelly Shoal Light - Wikipedia

   en.wikipedia.org/wiki/Gravelly_Shoal_Light

   As of 2001, both the light and radio beacon served as active navigational aids. [3] Although it never had a resident lighthouse keeper, this light is a recognized 'significant light" by the National Park Service National Maritime Initiative. [14] As of July, 2015, the light is for sale through an on line GSA auction process. [15] [16] [17]

4. Spectacular Northern Lights in Michigan expected to make an ...

   www.aol.com/spectacular-northern-lights-michigan...

   A Kp rating of 7 will allow the northern lights to shine over mid-Michigan and stronger solar storms reaching Kp 9 can send the northern lights as far south as Kentucky. The predictions for Friday ...

5. Whitefish Point Light - Wikipedia

   en.wikipedia.org/wiki/Whitefish_Point_Light

   In 2011, the U.S. Coast Guard Local Notice to Mariners reported reduced intensity of the Whitefish Point light from June 7, 2011 until August 16, 2011, when the DCB-224 Series Carlisle & Finch aerobeacon lens was changed to a light-emitting diode (LED) lantern with a reduced range of 15 nautical miles (28 km; 17 mi) [6] as permitted by Coast ...

6. Michigan dark sky parks, sanctuaries are best spots to see ...

   www.aol.com/10-best-spots-stargazing-michigan...

   The skinny: Near the tip of Michigan's thumb along Saginaw Bay, this park has "565 acres of woods, offer excellent hunting opportunities, wet lands and the best sand dunes and beaches on the ...

7. Northern lights in Michigan: You may see them again tonight ...

   www.aol.com/northern-lights-michigan-theyre-more...

   If the sky is cloudless on Friday, the optimal time to see the lights is within an hour or two of midnight. Contact Frank Witsil: 313-222-5022 or fwitsil@freepress.com.