What important substance can be found in dark craters at the Moon's poles?

What important substance can be found in dark craters at the Moon's poles? 2. (2 pts) Why is Enceladus one of the best places in the Solar System to look for life? 3. (2 pts) What are the two places in the Solar System that Comets come from? 4. (2 pts) Imagine that you want to figure out how old a mineral sample is. The isotope Potassium-40 decays to Argon-40 with a half life of 1.25 billion years. In your sample, half of the Potassium-40 has decayed to Argon-40. How old is your mineral? 5. (2 pts) In a protoplanetary disk, what is the frost line? 6. (2 pts) The elements hydrogen, helium, and lithium came from the Big Bang. Where did the Earth's heavier elements such as Iron and Silicon come from? 7. (2 pts) What might have caused the solar nebula (cloud of gas and dust) to collapse in on itself and start the formation of our Solar System? 8. (2 pts) Which planet in our Solar System has an extreme greenhouse effect and what gas causes this? 9. (1 pt) According to the Giant Impact Hypothesis, what was the size of the planet that smashed into Earth about 4.5 billion years ago: was it about the size of Mars or of Jupiter? 10. (4 pts) The DART mission is designed to test NASA's ability to deflect a hazardous asteroid and prevent it from hitting Earth (Links to an external site.) (Links to an external site.). Note that NASA is testing the technology on an asteroid that is NOT a hazard to Earth. In a few sentences describe: (a) How the DART mission will deflect the asteroid. (b) How NASA will measure the change in the orbit of Dimorphos after the spacecraft hits it. https://www.studyhelpus.com/Questions & Answers/what-important-substance-can-be-found-in-dark-craters-at-the-moons-poles/