NASA's Juno mission finds a massive lava lake in Jupiter, offering new insights into volcanic activity beyond Earth and the ...

Formed after a volcanic eruption when lava cools so fast that mineral crystals are unable to form, the rock appears as amorphous dark-colored glass known as obsidian. Notable qualities of obsidian ...

Obsidian – volcanic glass formed by rapidly cooling lava – was a treasured commodity ... The significance of this rock stems from its green hue and its association with the mythical city of Tollan. In ...

Obsidian is a volcanic glass that cools ... If these bubbles are trapped in the lava, the final solidified rock will have small holes, called vesicles, that are a good indication of the amount ...

This was the start of the dream of KMT: The Krafla Magma Testbed, named for the volcanic system in Iceland. It’s a dream that ...

Obsidian – volcanic glass formed by rapidly cooling lava – was a treasured commodity ... The significance of this rock stems from its green hue and its association with the mythical city ...

Then I came to Panarea and found one—with the whole world within it.” This scrawl, attributed to one “Mastro Ciccio, 1920”, ...