高2です。
わからない2題、和訳お願いします。
1The force that binds the Earth to the sun,and prevents it from flying off alone across the galaxy,would fall to only one-quarter the strength if the Earth's orbit were twice as big as it is now.
2Over the past five years, an entirely separate field has arisen that analyzes aging at the cellular level and looks to treat and possibly cure many of the conditions and diseases of old age by focusing on the mysterious role played by DNA.
