A heart-shaped


When NASA’s New Horizons spacecraft flew by Pluto in 2015, it returned images with a sweet surprise: a heart-shaped formation dominating the surface of the dwarf planet.

Now, researchers believe they’ve uncovered the origin of this cosmic Valentine. The heart, they report today (April 15) in the journal Nature Astronomy, was formed in a slow-motion, glancing collision with an icy rock wider than Kansas is long.



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By GIL