A principal component analysis of speculative models can more confidently predict the presence of a planetary object’s subsurface ocean than previous techniques.
Neptune
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The Ice Giant Spacecraft of Our Dreams
Scientists imagined some innovative technologies that could enhance a future mission to Uranus or Neptune.
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New Tiny Moon of Neptune Discovered
The moon’s size and orbit point to it being the remnant of a collision with Neptune’s moon Proteus.
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Uranus and Neptune Should Be Top Priority, Says Report
Voyager 2 visited the ice giants in the 1980s, the only craft ever to do so. Planetary scientists argue that new missions to each planet would also benefit heliophysics and exoplanet research.
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Diamonds Really Do Rain on Neptune, Experiments Conclude
Researchers subjected hydrocarbon samples in a laboratory to Neptune-like pressures. The samples, reminiscent of molecules found in the ice giant’s atmosphere, compressed into nanodiamonds.
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Pluto-Bound Spacecraft Crosses Orbit of Neptune
NASA’s New Horizons spacecraft, which is en route to explore Pluto and its planetary system in 2015, crossed the orbit of Neptune on 25 August.