☀️ The Sun
⚛️ Energy & Physics
🌌 Stars & Life Cycles
🔭 Space Measurement
📉 HR Diagram
100

The visible “surface” of the Sun

What is the photosphere?

100

The equation that shows mass-energy equivalence?

What is E=Mc2?

100

A baby star, pre-fusion.

What is a protostar?

100

The apparent shift in position of a star.

What is parallax?

100

Temperature in Kelvin, decreasing

What is the x-axis label?

200
Dark, cooler areas of the Sun

What are sunspots?

200

The balance that keeps a main sequence star stable.

What is hydrostatic equilibrium?

200

The cloud of dust and gas from which a star is born.

What is a nebula?

200

This is the unit of measurement for the parallax equation.

What is a parsec?

200

Luminosity in Suns (increasing)

What is the y-axis label?

300

The two primary elements that make up most of the Sun

What are hydrogen and helium?

300

The process that powers all main sequence stars including the Sun.

What is nuclear fusion?

300

The massive object formed from "low mass" iron cores after a supernova?

What is a neutron star?

300

As a star's distance increases, this will happen to the parallax angle.

What is decrease?

300

The region where giant stars are found.

What is the upper right?

400

The layer that transports energy by rising and sinking plasma.

What is the convective zone?

400

The specific temperature a star’s core must reach for hydrogen fusion to begin.

What is 10 million degrees Kelvin?

400

A higher mass will have this impact on a star's life cycle.

What is shorten it?

400

This type of star helps measure distance using brightness changes.

What is a variable star?

400

The region where white dwarves are found.

What is the lower left?

500

The percentage of the solar system’s mass contained in the Sun.

What is 99.86% (Will accept 99.8-99.9)

500

The pressure that resists collapse in stellar remnants.

What is degeneracy?

500

This determines what happens to a star during its life.

What is mass?

500

Dark absorption lines reveal this about stars.

What is chemical composition?

500

The region where low mass, young stars are found.

What is the lower right?