Dwarf planets
Latest about Dwarf planets
NASA Must Pay for Plutonium Production to Fuel Deep-Space Probes
By Mike Wall last updated
NASA had been splitting costs with the U.S. Deparment of Energy.
Space Plutonium: US Once Again Producing Fuel for Deep-Space Missions
By Nola Taylor Tillman last updated
Plutonium Shortage May Thwart Future NASA Missions to Outer Planets
By Brian Berger last updated
NASA is facing a plutonium shortage that may thwart future missions.
US Makes First Plutonium in 25 Years, for Spacecraft
By Mike Wall last updated
The Department of Energy has made its first plutonium-238 in a quarter century.
Production of Plutonium Spacecraft Fuel Could Boom in Early 2020s
By Mike Wall last updated
Rare plutonium from space found in deep-sea crust
By Stephanie Pappas last updated
A rare type of plutonium has been found in the crust below the deep sea, offering new clues as to how heavy metals form in star explosions and mergers.
Plutonium: Facts about the radioactive element
By Laura Mears published
Reference Plutonium is the 94th element in the periodic table and one of the most dangerous elements on Earth.
Dwarf planet collision may have sent strange ultra-hard diamonds to Earth
By Robert Lea published
Strange hexagonal diamonds may have been jettisoned into space when a dwarf planet collided with a large asteroid around 4.5 billion years ago.
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