On January 5, 2005, astronomers at NASA discovered Eris, the second-largest dwarf planet in the solar system. Eris is just slightly smaller than Pluto, and it orbits the sun about three times farther ...
Eris was discovered. It was considered the largest known dwarf planet in the solar system until a year later when Pluto was ...
Heliophysics enters a pivotal year in 2025 with solar cycle activity, major missions, and a strategic research blueprint ...
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