If not in visible stars and galaxies, the most likely hiding place for the matter is in the dark space between galaxies.

A supermoon occurs when a full moon aligns with its closest proximity to Earth, resulting in a larger and brighter appearance than usual. The phenomenon is not a rare occurrence, but its visual impact ...

迅速增长的卫星群引起了学界的强烈关注。卫星的反射光肉眼可见，对于专业望远镜而言非常明亮。这些轨迹已经影响了全电磁波谱的天文图像，在运行和校正方面付出了显著的成本。 与普遍看法相反，卫星轨迹不仅影响地面天文台，还影响哈勃太空望远镜等太空天文台。然而，目前在轨卫星数量只是未来十年计划发射卫星的一小部分（不到3%）。 研究组基于电信行业提出的卫星群计划，对一系列国际近地轨道望远镜的卫星轨迹污染程度进行了 ...

Physicists are quietly rewriting one of the most basic units in science, using a new generation of optical clocks that can ...

A Pacific Palisades high school student is among 30 semi-finalists from around the world competing in the Breakthrough Junior ...

The first clear crackle of Martian lightning has finally reached human ears, captured by a microphone bolted to a rover ...

NASA imaged Comet C/2025 R2 (SWAN) every four minutes for nearly 40 days, marking the longest any comet has been tracked with ...