A strange planetary system has left scientists baffled – as it appears to be 'inside out'. For example, here in our own Solar System, Mercury and Mars are rocky, while Jupiter and Neptune are gaseous. While the planets begin with a rocky planet followed by two gas worlds, the outermost planet is rocky. Initially, the researchers theorised that the rocky and gaseous planets may have swapped places, or that the rocky planet lost its atmosphere in a collision. What remains unclear is if this strange inside out system is a one-off, or if there are others out there.

Source: Daily Mail February 12, 2026 19:19 UTC