Stars & Constellations Week 7. What is a star? a ball of gas held together by its own gravity gravitational force continually tries to collapse the star.
Chapter 5: Cosmic foundations for origins of life - stars.
Picture in the sky
The Night Sky Constellations
Longitude and Latitude Earth is divided into imaginary lines of longitude and latitude measured in degrees (since Earth is spherical). These lines form.
The Night Sky What are constellations? Why do we see some in winter, some in summer and some all year long? Why do they move? How are they useful?
Chapter 5: Cosmic foundations for origins of life - stars
