This is the only satellite of the Sun that is able to hold life.

This happens when the moon moves through Earth's shadow.

This occurs when the moon is directly between the Sun and Earth.

They are what happens when the portion of the moon that reflects sunlight back to Earth changes.

This is the week where the gibbous phase is located.

A force that is exerted by all bodies of mass that pulls other objects with mass towards them.

The darkest part of a shadow.

This is what is blocked by the moon.

This happens when the near side of the moon is unlit.

This happens when the near side of the moon is fully lit.

Earth's closest neighbor that is also its satellite.

The spreading cone of lighter shadow.

This happens somewhere on Earth about every one to two years.

This is the term to describe when the moon starts to grow and get thicker.

This is the term used to describe when the moon's sunlight decreases and shrinks.

An example of this would be the Earth to the Sun, as well as the other seven planets that orbit around the body.

This happens when the moon passes completely into the Earth's umbra.

This is what people see when they are within the penumbra and looking at the sun.

This is used to describe the shape of the moon when little sunlight is being shown, causing it to look slim in shape.

This phase is shown when most of the moon is visible; it is more than half-way lit, yet not fully lit.

This takes 28.5 days to about a month to complete.

This is the reason why solar and lunar eclipses don't happen every month.

The next year in which we will be able to see a total solar eclipse in the Unites States.

This appears to grow each day because the sunlit area we see from Earth gets larger each day.

This appears to shrink each day as it goes through that process.