Martin Gardner's "Thang" (flash fiction, free): Big fish eats smaller one; & is food to bigger one

This is a very minor story, though apparently a well known one.

A giant, cosmic scale creature called Thang eats up earth for breakfast! And then gets eaten up by something even bigger.

Collected in.

1. Everett F Bleiler & T E Dikty (eds)' "The Best Science Fiction Stories: 1949".

Fact sheet.

First published: 1948. ("for his college literary magazine").
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Rating: C.