The whole time it's underground, the hot seawater is leaching metals from the surrounding crust, which is full of huge amounts of sulfur, along with metals including copper, gold, zinc, lead, and silver.
Although impure liquid hydrazine doesn't explode, it can certainly boil vigorously and spray hot and chemically toxic liquid around, which can endanger the safety of people nearby.
But, when Holmes claimed that he and his generation had been touched with fire, he meant that their character had been forged through the searing challenges and tragic deaths of wartime military service.
It's one of the ways the company is looking to differentiate itself from competitors, who all launch from the ground, in the red hot small satellite launch market.
According to a statement from McGill University, a lava planet is a fiery, hot world that circles so close to its host star that some regions are likely oceans of molten lava.
In 1977, part of the crater collapsed and the hot lava inside burst out, with the fiery stream moving at speeds of up to 62 miles or 100 km an hour, devouring, incinerating, and destroying everything in its path.
The Lion at once passed through the door, and glancing around saw, to his surprise, that before the throne was a Ball of Fire, so fierce and glowing he could scarcely bear to gaze upon it.
His hand, trembling with his effort at self control, bore to his lips the last of his glass of ale. Daisy's voice got us to our feet and out on to the blazing gravel drive.
Now this view is only possible because the planets are (a) really huge, (b) really far from their star (here's our solar system for comparison), and (c) they're all glowing red hot.