Earth’s inner core has long challenged researchers because seismic waves do not move through it uniformly. Compressional waves generated by earthquakes travel roughly 3 to 4 percent faster along Earth ...

It is with a heavy heart that I announce that NASA Earth Science Communications has directed The Earth Observer to conduct an ...

With findings on Earth’s polar extremes and its innermost core, scientists shaped how we look at the planet in 2025 in surprising and fascinating ways.

Earth is taking in more energy than it releases back to space—a growing "energy imbalance" that is fueling global warming. A ...

Today, oceans cover about 70% of Earth’s surface. This stark contrast has long driven scientific interest in how water managed to survive Earth’s transition from an early molten state to a largely ...

Tiny air bubbles trapped in ancient halite crystals provide the clearest direct measurement of Earth’s atmosphere 1.4 billion ...

When Earth was a molten inferno, water may have been locked safely underground rather than lost to space. Researchers ...

Earth keeps getting warmer because more energy from sunlight stays trapped in the climate system. Scientists refer to this as ...

P erihelion – or the Earth's closest approach to our host star – will take place on January 3, 2026. At this point, our ...

The world’s biggest Earth science conference had a shocking backdrop this year, with the Trump administration announcing that ...

Human activities increasingly lead to climate change, overuse of water, hazards and the destruction of biodiversity — to name just a few. Earth scientists need to take on the challenge of serving ...