When the moon was closer to earth, was it still possible to witness a total solar eclipse millions of years ago? Or was the view-able space so small that it was impractical to even witness it?
The moon is moving away from Earth. So in the past it was closer and its shadow was larger so a wider area experienced a total eclipse.
At some point in the future (in about 0.5 Billion years) a total solar eclipse will no longer be possible because the moon's shadow won't fall on the Earth.