3 ms·Peagus rockets aren't cryogenic, they are solid monopropellant rockets. Not really all that dangerous.by gernerz 9y agoPeagus rockets aren't cryogenic, they are solid monopropellant rockets. Not really all that dangerous.MPSimmons 9y agoAnyone who suggests to you that hydrazine isn't dangerous shouldn't be trusted.deleted 9y ago[deleted]lmm 9y agoHydrazine is liquid; an equally toxic solid would be much less dangerous to work with.