But that is because his original leitmotif has been hopelessly over-shadowed through the lack of a good self-education.

Earlier data indicated possible ice deposits in permanently Shadowed craters near the moon's poles, where water from comet impacts could have been trapped over the moon's long history.

In comparison with oil sands, the costs on producing conventional oil is considerably lower, and the technology applications proved to be more mature, which over Shadowed the development of oil sands.