I so hoped that by Rosh HaShanah, they would all be freed and there would be some kind of peace, or at least a ceasefire; ...

The presence of lava tubes beneath the surface of Venus, underground tunnels carved out with molten rock, might now have significant proof.

NASA approves new tests for Dragonfly, the nuclear drone that will explore the chemistry of life on Titan starting in 2028.

For centuries, the mystery lingered beneath Milan’s streets — and now, it’s no longer just a legend. Secret tunnels, sketched by Leonardo da Vinci in 1495, have finally been uncovered beneath Sforza ...

Lava tubes are familiar on Earth. They form when the surface of a lava flow hardens while molten rock continues to drain ...

Jews in Galilee used the tunnels as a safe haven in the first through fourth centuries as they revolted against Roman rule.