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Ocean Habitats
These Web pages provide a set of lesson plans devoted to organisms that live in the intertidal zone. Geared to grades seven to nine, the activities include studies of a variety of shells, a virtual tour of a rocky coast, and a study of life in a tide pool. Several online videos accompany the lessons. […]
- Astronomy
Triple Play: A planet with three suns
Three suns grace the skies above a newly found, Jupiterlike extrasolar planet, posing a puzzle for how massive planets form in a closely-knit, multiple-star system.
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19573
In your article you refer to a standard concept of a person speeding “in a rocket traveling slightly less than the speed of light” and say that “motion at such enormous speeds drastically slows the clock for the traveler.”
