时空曲率 meaning in English

space-time curvature

It takes a very large mass or a great concentration of mass to produce much spacetime curvature
我们得有非常大的质量或者很高的质量密度，才能产生很大的时空曲率。
The curvature of spacetime keeps the earth in its orbit around the sun and drives distant galaxies ever farther apart
时空曲率使地球得以保持在绕日轨道中，也驱使遥远的星系彼此更加分离。
How the universe evolves is affected by three factors , namely the mean density of mass - energy , the space - time curvature and a mysterious factor , the cosmological constant
宇宙尺度的变化受三个因素影响：宇宙中质量-能量的平均密度宇宙的时空曲率与及一个神秘因素宇宙常数。
The future of the universe is mainly determined by the mean density of mass - energy and the space - time curvature , while cosmological constant does not carry any weight among popular cosmological theories
现在流行的宇宙论都不考虑宇宙常数，宇宙的未来完全由质量能量的平均密度及宇宙的时空曲率来决定。