What is exploding and what are the products and what are you counting as part of the explosion and what not?
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an explosion is an element reaching boiling point (becoming a gas) without a release for it Ssssssss.
do all elements exist in a state of either solid, liquid or gas (heating or cooling changes their state)?
I don't know. If only there was a 3,500km diameter lump of rock up in space where we could see if the Sun's light might reflect off it...
:looks out his workshop's transparent glass window, thoughtfully pondering dart's question, while working on his X-ray machine and listening to his radio:
https://www.desy.de/user/projects/Physics/Relativity/SR/light_mass.html# But IMO, light has mass. A photon at rest has zero mass. A photon in motion @ c acquires mass, i.e. "energy and momentum" = mass
How about a super nova? If sufficiently stimulated an object of mass does explode. A nuclear device has mass that explodes atom by atom after the nuclear process has been activated by inward pressure.
E = Mc^2 Question: does a photon @ c have energy? A photon @ c has energy (E). Therefore a photon @ c acquires the equivalent energy as a massive particle would at a lower speed.