Question

1. are massive spheres of extremely hot gas in space that give off light and other forms of energy.
2. is the power or ability to make something work or be active.
3. is the measure of luminosity (a measure of light) of a star as seen from earth.
4. the force that pulls objects on earth to the center of our spherical planet is called _.
5. the portions of the moon that we can see from earth on any given night are called _.
6. the _ is the layer of gasses that surround a planet.

Explanation:

1. Stars are known for being massive spheres of hot gas that emit light and energy.
2. Energy is defined as the power or ability to do work or cause activity.
3. Apparent magnitude measures a star's luminosity as seen from Earth.
4. Gravity is the force that pulls objects towards the center of the Earth.
5. The illuminated parts of the Moon visible from Earth on a given night are called the visible portion or the illuminated face.
6. The atmosphere is the layer of gases surrounding a planet.

Answer:

1. Stars
2. Energy
3. Apparent magnitude
4. Gravity
5. Visible portion of the Moon (or illuminated face of the Moon)
6. Atmosphere