Krakotte

That was awesome! I was afraid that the cloud cover would be more dense than anticipated but it turned out to be ok. I took a few photos with my camera (300mm aps-c) (no filter so no partial phase) Safe travel to everyone going home!

Hi everyone, In Montreal, Quebec, here. Weather looks great for once (we got snow and rain all week but it should be sunny tomorrow, which is all that matters). We will be going to a park 2km from our home, with the kids. The excitement is rising! Hope you will all have a clear sky.

Not exactly. An explosion can be of chemical origin (e.g. fuel-air mixture ignition) or of mecanical origin (e.g. BLEVE). Then, an explosion can be: - a deflagration : when a pressure front travels slower than the speed of sound (most fuel-air mixtures, low explosives) - a detonation : when a choc wave travels faster than the speed of sound (some hydrogen or acetylene air mixtures, high explosives) It's very unlikely that a methane-air mixture could detonate (not sure about a methane-O2 mixture but I would guess also unlikely). /off-topic

FYI, the channel Real Engineering produced a video about them a few months ago: (I don't have the requiered knowledge to analyse this in details but I am interested in the discussion.)

It's probably the TEA-TEB used to start the Mvac.

Actually, Hexanitrohexaazaisowurtzitane seems to be used as solid propellant oxidizer in China...