The Museum of Flight in Seattle will host University of Washington astronomer Megan Gialluca on Sept. 20 for Crash Course in Astrobiology, a program that offers a close look at Earth-sized exoplanets ...
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Exceptionally rare sighting of planets colliding may shed light on the crash that formed the moon
Astronomers say a distant, sunlike star shows signs of a catastrophic planet-on-planet crash that may mirror the ancient impact that formed Earth's moon.
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