If you want to know how to make an explosion that will literally launch your worm into virtual orbit , i.e. so high up you can't even see it, then look no further. Before we start this must be done in the firing range. It's pretty pointless, just a bit of fun.
Step 1: Make sure Cavern Borders or cavern maps are off, then enter firing range.
Step 2: Make yourself a small space - but big enough for your worm - with girders on a point on the map with clear sky above and around.
Step 3: Teleport or otherwise enter your space, then plant 3 REPELLING electromagnets, then 2 ATTRACTING electromagnets.
Step 4: Put a Holy Hand Greande right in front of you next to/on the magnets.
Stpe 5: When it explodes you will catapulted very, very high into the air for some strange reason.
Note:
The elctromagnets are essential, without them the explosion is fairly ordinary. With them, it is massively powerful.
It is also good to note that although the worm flies very high into the air, the actual explosion is not as destructive as you would think - no more destructive than a Holy Hand Grenade explosion.
Thanks for reading, commment if it works for you/doesn't, any similar things you may have found out etc etc. Thanks.:)

DS or PSP? The physics are different in each version. I'm going to guess PSP since they are a little stranger on that version.

works on psp version. EDIT: i've found that there is no need to make yourself a small space for the explosion, just make sure there's no obstacles between you and the sky. place as many ATTRACTING magnets as you can on top of each other then use the holy hand grenade.

Hey buddy, it's my job to find glitches. Just go look at all the glitches I discovered. The Sentry Sheep is the best XD