Hey everyone this is me Fanguin4 I know that some new Little Space Heroes don't know that how to get a pet glow, So to help you out here is some detail with pictures so you can easily get that how to get a glow? And you will also get some new badges.So follow the given steps:
First of all click on your map icon on the right hand side of the screen.
After clicking it you will reach to alpha launchpads.If you have got your star jet then click on the button and your star jet will come up.

If this is your first ride on your star jet then you will get a message from ace.
Now go inside your star jet and fly upwards for a great adventure.
After this you will reach to the space here is how cool it looks.
Now head over to crystal planet that is also known has glow planet , and land on that planet.
 If you have landed first time On this planet you will get a message from professor Q.
After this message go ahead to get your glow.Watchout! to get a glow you  have to stand still without any movement for a minute on the crystal planet  so that glows will move around you.
Then a striking shine thing will appear which is sign of that you have got your glow.Then take him with you and you can move around.
After completing this all you have also got some badges so you can see your journal to checkout what badges you have got. :D
Here is the picture of the badges you will get after completing this.
This badge is for your first ride on your star jet.
Then next badge is for your first landing on the crystal planet.
And then the third badge is for adopting your best friend that is your glow.
I just hope that this helped you alot. If this really helped you please let me know in the comment.