source: It was originally thought that the debris thrown up by the collision filled in the smaller craters.
target: The smaller craters were originally thought to be filled by collision debris.
references: The smaller craters were originally thought to be filled by collision debris. Originally, it was thought that debris from the collision filled in the smaller craters. It was thought at first that the impact threw up dirt and sand that filled in the smaller craters. It was thought that the debris thrown up by the collision filled in the smaller craters. It was once thought that the debris from the collision filled the smaller craters. It was thought that the debris left by the impact filled in the craters. It was first thought that the debris thrown up by the crash filled in the smaller craters. It was thought that the rubble from the collision filled in the smaller craters. Originally, the thought was that the debris thrown up by the collision will fill n the smaller craters. It was thought at first that junk thrown by the banging together filled in small holes.