The most eye-catching thing about iodine sublimation is the bright purple color of the vapor. But the halogen’s crystalline solid form has its own, often overlooked, beauty too, says Brent Rubio ...

“Last year we tested critical technologies for iodine storage, delivery, and sublimation, on Spacety’s Xiaoxiang 1-08 satellite as part of an in-orbit demonstration of our I2T5 iodine cold gas ...

It’s the first time that any experiment in the world has demonstrated the mechanism for how the gas-phase form of iodine—known as iodic acid—forms, and suggests it has a catalytic role in atmospheric ...