Post ARHcKitfV3cnnA22DY by joopdelfijn@mstdn.social
 (DIR) More posts by joopdelfijn@mstdn.social
 (DIR) Post #AQ0FxTS9CoUcOQPPU0 by drhafezster@mastodon.world
       2022-11-26T17:56:03Z
       
       1 likes, 0 repeats
       
       Erika  #PlanetaryDefenseSee the faint concentration of light toward the center of this image? That’s the elusive gegenschein, aka counterglow, a diffuse spot visible only in the darkest of skies, centered at the point directly opposite the sun. It’s caused by sunlight reflecting on interplanetary dust.
       
 (DIR) Post #AQ0O0IiSNgoxawtd9E by glvsave31@mstdn.social
       2022-11-26T19:26:20Z
       
       0 likes, 0 repeats
       
       @drhafezster I had never heard of this before, this is fascinating. Thanks for sharing
       
 (DIR) Post #ARHcKitfV3cnnA22DY by joopdelfijn@mstdn.social
       2023-01-04T00:49:06Z
       
       0 likes, 0 repeats
       
       @drhafezster No kidding! That's new to me! When was this first discovered? This effect would imply the interplanetary dust acting as a retro-flector, not just a reflector. Is there an explanation known?
       
 (DIR) Post #ARITCvzEFC4VduntQ0 by Extra_Special_Carbon@mastodon.world
       2023-01-04T10:41:34Z
       
       0 likes, 0 repeats
       
       @drhafezster Woah!