Scientists saw various space mysteries that could solve a puzzle about Pluto and the black holes. Researchers have found evidence that billions of years ago, the dwarf planet may have had an ocean.

NEW YORK: New pictures relayed by the first spacecraft to visit distant Pluto show odd polygon-shaped features and smooth hills in an crater-free plain, indications that the icy world is geologically ...

Evidence suggests a subsurface ocean on Pluto, supported by surface fractures indicating global expansion potentially caused by ocean refreezing, the absence of an expected fossil equatorial bulge, ...

David Rothery is Professor of Planetary Geosciences at the Open University. He is co-leader of the European Space Agency's Mercury Surface and Composition Working Group, and a Co-Investigator on MIXS ...