The comet’s unusual distinct dual-lobe shape has been a mystery since its initial discovery, and holds clues as to its formation
Venus may have once been habitable, NASA says
The hostile world may have had a shallow liquid-water ocean and habitable surface temperatures
New Horizons Update: A day on Pluto and Charon captured by spacecraft
On approach in July, NASA’s spacecraft captured the dwarf planet rotating over the course of a full “Pluto day”