You probably learned some variant on a planet-themed mnemonic in school. In today’s eight-planet solar system, Mercury ...
New Horizons principal investigator Alan Stern says, "Pluto is showing us a diversity of landforms and complexity of processes that rival anything we've seen in the solar system." As the craft ...
NASA has given a new lease of life to its New Horizons mission, which in 2015 got the first-ever close-ups images of dwarf planet Pluto ... its solar wind at the very edges of our solar system.
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