ASTR 101 Lecture 3: Lecture 3
Document Summary
Astronomical "time" scales are also very large like astronomical "spatial" scales. The solar system formed 4. 6 billion years ago. The babylonian "venus tablet of ammisaduqa" (1700 bce) describes the motions of venus in the sky. Anasazi "sun dagger" - the rocks split a spiral petroglyph (spiral) with shafts of sunlight to reliably predict seasonal changes and mark important agricultural and ceremonial times. Discovering patterns in the location and movement of objects reinforced. Constellations - patterns of the apparent position and arrangement of bright stars. They were named based on human elements and mythical creatures. Stars are directly linked to the human condition and belief system. About every 27. 3 days, the moon makes a complete revolution around the. The altitude of the sun appears to change throughout the seasons because of the tilt of earth"s axis. This changes the amount of time that a place receives sunlight. Penumbral lunar eclipse: moon passes through the penumbra.
