this is natural symmetry here. the seven frames that shows the international space station as it crossed the face of the sun and of course, yes, a big moment at the white house. this image going viral across social media. another clip has gone viral too. sign-off by abc anchor frank reynolds after the last eclipse in '79. >> not until august 21, 2017 will neither eclipse be visible from north america. that's 38 years from now. may the shadow of the moon fall on a world of peace. >> amen. i don't know if we're a world of peace but we can keep trying. the next eclipse for north america is seven years away in 2024. that does it for me, i will see it here tomorrow night, i hope, at 6:00 eastern.