As Mars begins to appear in the evening April sky, Coleman Planetarium will open its doors to see the red planet at its closest distance to the Earth. The University of North Georgia Spring Planetarium Show “Red Baron attacks the Bloody Moon: Mars and the Lunar Eclipse Tetrad” will be at 8 p.m. Fridays April 4 through June 27 on the college’s Dahlonega campus. Then at 3:42 a.m. Tuesday, April 15, the first total lunar eclipse since 2011 will happen.