Astronomy 2022 August 24-September 12

25 in Orion, 25 Orionis as an example

A Greek astronomer that amassed observational material for posterity to use, not as effective as Ptolemaeus

A Greek idea that everything revolves around Earth. Includes the celestial equator, meridian, celestial poles, and ecliptic

A recognizable pattern of stars

a sun centered model of the solar system

Ancient stars 10-12 billion years old, cool red stars, population 10k-1 million stars, separated by light weeks/months

Arabic, begin with Al

Areas of the sky

ask a simple question, research, formulate a hypothesis, test, analyze, theorize

AU, LY, PC, LTU

Clouds of dust and gas, remnants of dying or dead stars

Comet hunter, discovered Messier Object 1

Dark nebula, dust clouds that block light

Discovered the three laws of planetary motion

Ejected envelopes of red giant stars, nebula that appears as expanding clouds of gas

Exploring misinformation and disinformation, evidence, etc

galactic clusters, young newly formed stars, 10-300 stars

Illusion of a recognizable imagine when none exists

made a continuous record of the positions of the sun/moon/planets, was court astronomer, had Kepler as an assistant

N=R*. Fp x ne x fl x fi x fc x L

Nebula that emits light and glow as newly formed stars ionize the gases, red, birthplaces of new stars

Nebula who’s bluish white light is created as light from newly formed stars is reflected off left over dust grains

Planets orbit in an ellipse

Star system made up of two gravitationally bound stars

Stonehenge, newgrange, chichen itza

Summer and spring have different star systems

The orbital period of a planet

The speed at which each planet moves along its ellipse

The study of an object’s light

The study of the objects that lie beyond he solar system/the processes by which these objects interact

The “last” great astronomer of the Roman era, made a geometric representation of the solar system that predicted the positions of the planets for any desired date and time

Used Polaris as a North and South landmark

Uses the Greek alphabet to designate stars. Alpha, beta, etc

Using the sky for calendars, navigation, stories

When to plant crops, when herds migrated, when it was safe to travel