Uranus orbits on its side since its axis is tilted toward the sun.

An object that orbits a star and does not produce its own light is called a(n) ________________.

This diagram shows the eight planets and one dwarf planet in the solar system.

Which object in the solar system is considered a dwarf planet?

Which of the following is the largest planet?

The difference between a space probe and a rover is that a space probe is manned by a human astronaut.

Saturn is larger than Earth.

A student uses flashlights to model stars. Which model of a star will appear brighter than the others?

A scientist wants to collect rock samples from a planet in another solar system. Which technology should she use?

Which space technology can be used both on Earth and in space?

Which technology was the first to be developed?

The Sun appears so bright to us because it is so _______ .

Which technology is used to see the objects in this picture?

All of the inner planets are made of solid, rocky material.

Look at the picture. Which statement about the objects in this picture are true?

The hottest of the inner planets is ____________.

Mercury is larger than Venus.

A supergiant star that explodes is called a ______.

The largest planet in our solar system is _________.

Mars and Earth rotate at about the same speed

Mars has a longer orbit than Earth because it is farther from the Sun.

A year on Mars takes half as long as a year on Earth.