为什么宇宙如此黑暗？
Why is Universe so dark ?
摘要：
在这篇为普通观众准备的演讲中，我们简要地提到了宇宙标准模型的缺点。然后，我们专注于被称为年龄危机的模型的后期时间不一致性，其解决方案需要存在的排斥效应，可以来源于暗能量或大规模修改重力。总的来说，我们的描述是基于牛顿宇宙学，尽管有局限性，但它是简单而优雅的。在启发式的基础上，我们解释了一个微小的引力子质量可以解释后期的宇宙加速。本文还简要讨论了Ia型超新星爆发的物理基础，并通过相关观测直接证实了宇宙的晚期加速。
英文摘要：
In this presentation prepared for a general audience, we briefly mention the shortcomings of standard model of universe. We then focus on the late time inconsistency of the model dubbed age crisis whose resolution requires the presence of a repulsive effect that could be sourced either by dark energy or by a large scale modification of gravity. By and large, our description is based upon Newtonian cosmology which is simple and elegant despite of its limitations. On heuristic grounds, we explain how a tiny mass of graviton could account for late time cosmic acceleration. We also include a brief discussion on the underlying physics of Type Ia supernovae explosion and the direct confirmation of late time acceleration of Universe by the related observations.
机构、总结、中文摘要均由AI分析而来，可能存在错误，请以论文正文为准。
