Recently, astronomers discovered what they believe are two planets crashing into each other around a distant star. The collision took place about 11,000 light-years from Earth around Gaia20ehk, a ...
Astronomers witnessed planets colliding 11,000 light-years away, an event that could shed light on the collision that created Earth's 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.