Every year in early January, Earth reaches the closest point in its orbit to the Sun, a moment astronomers call perihelion.

The Earth became darker from 2001 to 2024, meaning it reflects less sunlight, a research team reports in the journal Proceedings of the National Academy of Sciences. The development is more pronounced ...

Earth will reach perihelion at 09:00 Universal Time on Saturday, January 4, 2025, the closest point to the sun in its annual, slightly elliptical orbit. The word comes from the Greek words peri (near) ...

While the Milankovitch Cycles operate on timescales far longer than human lifespans, their effects are always at play.

We’re going dark. The Earth is reflecting less light than it used to, especially the Northern Hemisphere. While climate change is to blame, the reverse is also true: the planet being darker — and ...