As strange as it sounds, rocks are made from stardust.
Volcanic ash is made of tiny crystal and rock fragments that during an eruption can reach as high as the cruising altitude of commercial aircraft, and that's a concern for airlines.
A maar is a volcanic crater, often filled with water. New research highlights the similarities between oral stories around the world that shed light on the formation of these craters.
Scientists say they've found a new method to help predict when volcanoes will erupt, based on data crunched from an eruption last year in Hawaii.
To prepare for future Mars missions, scientists collect samples and simulate communications conditions from volcano parks on Earth.
More evidence that the asteroid hit on Earth that marked the end of the dinosaurs could have triggered a deadly increase in volcanic activity.
Lord Howe Island is part of an underwater volcanic chain much older than first thought, with the possibility of new islands still to form.
Research into volcanic activity in the waters off Indonesia shows how active this region is and how destructive landslide-caused tsunamis can be.
The Earth's core is cooling down, and one day it will be completely solid – when that happens, Earth might look a lot like Mars.
To be better prepared for future eruptions there's a need to understand and monitor poorly known volcanoes, even in remote places.
We can't say that Katla in Iceland is 'due' to erupt, no matter what you have read.
Gravity, not magma, is forcing Etna to move, increasing the chances of collapse.
Melbourne lies at the eastern end of a volcanic province, but when's it going to blow? Understanding the geology of Melbourne and comparing it to Hawaii is really helpful in calculating risk.
A tectonic earthquake doesn't always trigger eruptions of nearby volcanoes. If an eruption happens, the volcano must already have been in a critical condition.
Compared to Earth, more "oomph" is required to bring magma to the surface of Mars, and this is probably why we haven't seen any recent eruptions on the red planet.
When magma rises towards the surface gas bubbles start to form. Whether or not they can escape as the magma is rising affects how explosive the eruption will be.
A mysterious cone has developed due to unusual volcanic activity on Hawaii.
Guatemala has ended its Fuego volcano rescue mission and declared 110 dead. But people in the hot, ash-covered eruption zone say that the real death tally is much higher and that they'll keep digging.
Fuego and other volcanoes are considered sacred in the Maya culture, but forced Spanish colonisers to move their new capital city.
Important points about volcanoes: location matters, explosiveness can be predicted to an extent, and fast-moving flows of volcanic materials (known as pyroclastic flows) are deadly.