The astronaut planted a flag on the ___.

A rocky ___ floated between the planets.

A bright tail followed the ___ across the night sky.

The museum kept the fallen ___ in a glass case.

Our model of the ___ showed planets circling the sun.

Tiny ___ glittered above the mountain camp.

The photo showed a spiral ___ full of bright lights.

Scientists still have questions about the huge ___.

The silver ___ lifted off from the launchpad.

Dad aimed the ___ at the moon.

The class visited an ___ on a hill.

Clouds moved away, and the full ___ appeared.

The probe flew near a bumpy ___.

People gathered outside to watch the ___ pass Earth.

A scientist picked up a small ___ from the desert sand.

She hung a paper ___ above her desk.

The sailors followed the ___ on a clear night.