Why it matters: Understanding extreme lava worlds helps scientists determine if Earth's geological evolution is typical or an ...

Scientists have identified an entirely new category of "liquid planet" that exists in a permanent, molten state. Traditionally, small exoplanets were categorized as either rocky "gas-dwarfs" with ...

Lava is shooting 100 feet to 200 feet into the air as Hawaii’s Mauna Loa, the world’s largest active volcano, erupts for the first time in nearly 40 years. For now, lava is not threatening any homes ...