This artist’s concept
illustrates a catastrophic collision between two rocky exoplanets in the planetary system BD +20 307,
turning both into dusty debris. Ten years ago, scientists speculated that the
warm dust in this system was a result of a planet-to-planet collision. Now,
NASA’s SOFIA mission found even more warm
dust, further supporting that two rocky exoplanets collided. This helps build a
more complete picture of our own solar system’s history. Such a collision could
be similar to the type of catastrophic event that ultimately created our Moon.
Image & info via NASA
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