Here are the possible solutions for heading for our planet clue
Answer
Clue
Relevancy
earthbound
Clue
Heading for our planet
Definition
fast in or to the soil
oslin
Clue
Grammy-winner K.T. whose ode "80's Ladies" claims "We burned our bras / And we burned our dinners / And we burned our candles at both ends" haha sounds like us
altairiv
Clue
The planet in the sci-fi classic "Forbidden Planet"
earth
Clue
"Planet of the Apes" planet
"Planet of the Apes" planet [spoiler alert!]
Definition
to cover with soil
eris
Clue
Largest dwarf planet almost named the tenth planet in 2003
mars
Clue
Planet explored by Calvin and Hobbes in "Weirdos From Another Planet!"