Hey Everyone this is Spacers and now i am gonna show you that how to get Rookie Racer Badge in Little Space Heroes.Here is the picture it looks like.
Now to earn this badge Click on your map.
Map will open up and now click on Alpha Launchpads.
After reaching to Alpha Launchpads click on the button so that your starjet will come out.
Now go inside your star jet and fly towards space.
After reaching to the Space go to Star Jet Racing where  you can Race and compete with other players.
Now you have to Race with others players and you have to complete the game.If you have won atleast one Race in the game you will get the Rookie Racer Badge.
Here is the picture how game looks like when you play.
So Here is the picture of the Rookie Racer Badge after earning it.
Important Note:You can also earn Speed Racer Badge but you  have to win atleast 10 Races in the game.
I hope this helped you.Let me know in the comment!!