New research shows that when an asteroid slammed into the moon billions of years ago, it carved out a pair of grand canyons on the far side. That's good news for NASA, which is looking to land astronauts at the south pole on the near, Earth-facing side later this decade.
China counters with tariffs on US products. It will also investigate Google.
“This was a very violent, a very dramatic geologic process,” said lead author David Kring of the Lunar and Planetary Institute in Houston.Are we all aliens? NASA’s returned asteroid samples hold the ingredients of life from a watery worldKring and his team estimate the asteroid was 15 miles across and that the energy needed to create these two canyons would have been more than 130 times that in the world’s current inventory of nuclear weapons.
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