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He noted, for example, that double star Eta (η) Cassiopeiae has a bright white primary with a lilac secondary. Astronomy magazine subscribers can read the full article for free. Just make sure ...
Astronomy is the oldest of the sciences, and quite possibly the oldest use of astronomy is navigating by the stars. This craft dates from prehistoric times among humans, and is even practiced by ...
Astronomy is the oldest of the sciences, and quite possiblythe oldest use of astronomy is navigating by the stars. This craft dates fromprehistoric times among humans, and is even practiced by ...
Fly by night: Indigo buntings know something about that phrase. These 5-inch, sparrow-sized birds migrate during the night using star patterns for navigation. They have internal clocks that enable ...