What term refers collectively to the four inner planets of our solar system?
Galilean planets
terrestrial planets
sidereal planets
abyssal planets

The term you’re looking for is “terrestrial planets,” which includes Mercury, Venus, Earth, and Mars. These planets are characterized by their rocky surfaces and relatively small sizes compared to the gas giants. They also possess solid ground, making them quite different from their bigger, more gaseous cousins in the outer solar system!

Did you know that these four planets have their own unique features? For instance, Venus has a thick, toxic atmosphere and is the hottest planet, while Mars is known for its rusty surface and is a prime candidate for future human exploration. Each planet tells a fascinating story about the evolution of our solar system!