EarthSky News - March 15 - Top Stories This Week

March 15 Top Stories This Week New explanation for Siberia's mystery craters  More new mystery craters reported in Russian media last month. A Russian scientist calls for "urgent investigation." Other scientists suggest a new cause. How often does a solar eclipse happen on the March equinox?  There's a total solar eclipse coming up at this month's equinox. How often does that happen? Good news! Young tortoises spotted on Galapagos Island  Tortoise hatchlings spotted on the island of Pinzón last year are the first to have survived there in more than a century.  2015 has three Friday the 13ths. What are the odds?  Friday was the second of three Friday the 13th for 2015. Here’s the story behind why 2015 has three Friday the 13ths. Visit the EarthSky store Help support EarthSky, and get tips and tools for astronomy. Plus … Today! Beware the Ides of March  March 15 is the Ides of March. Why should we beware? TONIGHT Look for the puzzling star called Epsilon Aurigae  In cycles of 27 years, Epsilon Aurigae light dims for a period of about two years. The star's last dimming was from 2009 to 2011.