Keep to the right of the asteoroid and float past it.
After a short time you will see the mail shuttle.
Arriving at the mail shuttle, you will find four pallets with packages and some floating containers on the right side. There is also another video tape (The Cosmonautics Day) floating around, which you can watch in the spaceship.
Once you have smashed all the pallets and containers and collected everything, you should now have two placeable suitcases that can be used to store items. In addition, you get the recipe for the suitcase and can now also make it for 4x Refined Metal.
My haul in total was:
4x water bottle
5x oxygen candle
3x oxygen generator
1x Videocassette (Day Of Cosmonautics)
1x Thick insulating tape
2x Refined metal
2x Light bulb
I hope I could simplify your start in Breathedge with this simple secret tip.