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It's possible that most habitable planets in the Milky Way are tidally locked.
An ocean of magma could explain why Jupiter's moon Io has volcanoes in the "wrong place". This would also mean that Io has an ocean of liquid water beneath its surface and might be potentially habitable.
It’s the outskirts of our solar system – spherical particles of rocks and ice, way beyond the familiar planets, and even the former planet Pluto, there lies the Oort Cloud – a spherical cloud of predominantly icy planetesimals that may lie roughly 50,000 AU from the Sun (AU = the distance from the Sun to […]
