Science
Which stars have the shortest lifespan?
The hottest bluest stars.
What is the DISK in a galaxy?
It is the flat pancake-like part filled with young blue, hot stars and gases and dust.
What does HR diagram stand for?
The Hertzsprung-Russell diagram
What are the three things most galaxies consist of?
1) Nuclear Bulge
2) Disk
3) Halo
What will you find in the Nuclear Bulge?
You will find red cool old stars
What is the difference between a regular diagram structure and the Hertzsprung-Russell diagram. State both horizontal and vertical features.
Horizontal: The cooler the temperature is found on the right side whereas in other diagrams it is found on the left side.
Vertical: The 1st luminosity is found in the center of the line. It has both negatives and positives on the line.
Say the "lifecycle" of a star after the star goes through the Stellar nebula and becomes a massive star.
Stellar Nebula
Massive star
Red Supergiant
Supernova
Black hole or
Neutron Star
What is the HALO part of a galaxy?
It is a spherical shape surrounding the bulge. It is full of star clusters.
What is a black hole?
It is a region in space that is held together by gravity. The end of the lifecycle of a star. The gravity is so strong it absorbs light itself.
What factor affects the color of a star?
The temperature
What are the three types of galaxies?
1) Irregular
2) Elliptical
3) Spiral
What happens after a star has gone through being a red giant?
It becomes a planetary nebula.
What is a white dwarf?
A white dwarf is the leftover of the center from a planetary nebula
What is the Nuclear Bulge of a star?
It is the small part where you would find old stars. Red and cool.
Say the "lifecycle" of a star when it's in the stellar nebula and becomes an average star.
Stellar nebula
Average star
Red Giant
Planetary Nebula
White Dwarf
Black Dwarf
What is a galaxy?
It is a system that is held together by gravitational attraction. It is filled with billions of stars and is also has gases and dust.