It's raining diamonds across the universe, research suggests

Scientists speculated on Friday that diamond rain may be falling on planets throughout the universe after simulating.

the odd precipitation thought to originate deep inside Uranus and Neptune using everyday plastic.

Thousands of kilometres below the surface of the ice giants, scientists have previously theorised.

that extraordinarily high pressure and temperature transform hydrogen and carbon into solid diamonds.

One of the study's authors, Dominik Kraus, a physicist at the German HZDR research facility, noted that diamond precipitation was very dissimilar from rain on Earth.

The diamonds are thought to originate in a "hot, dense liquid" beneath the planets' surfaces,

where they slowly descend to the rocky, potentially Earth-sized cores more than 10,000 kilometres (6,200 miles) below.

According to Kraus, the diamonds that have fallen there may have formed huge layers that extend "hundreds of kilometres or possibly more."