Complete the summary of the text using words A-I from the box to fill in the gaps numbered 36 - 40. There are 4 extra words in the box.

One method of terraforming Mars would be to 36 ____ asteroids at the planet. Rockets attached to enormous asteroid would propel it towards Mars, taking ten years to 37 ____ the enormous distances required. The asteroid would 38 ____ the planet with incredible force and 39 ____ enough energy to 40 ____ the planet’s temperature. The result would be a temperate climate and lots of water from melting ice caps.

A cover B create C hit D increase E land F drive G power H rise I shoot