No joke.

Sample of the lyrics:

We are astronauts, and we can see
We are astronauts, what’s good for you
We are astronauts, no plastic bags
We are astronauts, don’t waste the food
We are astronauts, turn out the lights
We are astronauts, in the night
We are astronauts, don’t need no cars
We are astronauts, we go by bike

We are climate, climate astronauts
We are climate, climate astronauts

[…]

Boys and girls around the world
Can you hear us
We are loud
We don’t need no CO2
What we need is me and you
And, our solar rockets
We rocket, rocket

We are astronauts, we plant the trees
We are astronauts, we go by feet
We are astronauts, we save the world
We are astronauts, when we brush our teeth
We are astronauts, don’t need no bath
We are astronauts, at every day
We are astronauts, we love you earth
We are astronauts, and we will say

We are climate, climate astronauts