________ are planets that don't orbit our sun.

Why are exoplanets hard to observe?

• They are too close to Earth.

   

• They are too bright.

• They are very far away and faint.

• They are too large.

What have scientists been able to determine about some exoplanets?

• Their exact distance from Earth.

• Their surface conditions and atmospheric composition.

• The number of stars in the Milky Way.

• The color of their stars.

Why are scientists interested in studying exoplanets?

• To find new places for humans to live immediately.

• Because exoplanets are identical to Earth in every way.

• To prove that all stars have the same number of planets.

• To understand how planets form and support life.

(True or False), scientists have discovered thousands of exoplanets.

• True

• False