Experiments with the world's biggest laser have given scientists fresh insights into the largest planets in our solar system.
A study of hydrogen at extreme temperatures and pressures has enabled researchers to build a clearer picture of conditions within Jupiter and Saturn, where hydrogen accounts for much of the mass.
Experts from the University of Edinburgh worked with an international team from France and the US with the most advanced laser in the world at the National Ignition Facility in California.
Powerful laser beams were fired across the facility towards a hydrogen sample and optical sensors used to detect changes.
Researchers were then able to observe how hydrogen behaved as the pressure and temperature were raised to six million times that of Earth's atmosphere, with conditions similar to pressures found in the interior of Jupiter.
The team says the findings shed light on the physical properties of the gas, which is the focus of research into a sustainable form of energy known as fusion.
Scientists say the study gave "valuable insight into how hydrogen behaves at extreme conditions, such as those found on other planets".
The study has been published in the journal Science.
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