Reading Comprehension (RC) | A vigorous debate in astronomy centers on an epoch in planetary histor

[align=justify][box_out][box_in] A vigorous debate in astronomy centers on an epoch in planetary history that was first identified by analysis of rock samples obtained in lunar missions. Scientists discovered that the major craters on the Moon were created by a vigorous bombardment of debris approximately four billion years ago—the so-called late heavy bombardment (LHB). Projectiles from this bombardment that affected the Moon should also have struckEarth , a likelihood with profound consequences for the
...

---