Can you tell the difference between California, Venus, Titan and Mars? Hint: California is the one with buildings.

Californians woke up to an alien-looking sky this morning, Wednesday, September 9, 2020. (more…)

4 months ago

Did Snowball Earth Happen Because of a Sudden Drop in Sunlight?

Hundreds of millions of years ago, Earth went through two episodes of severe glaciation. These two episodes—the Sturtian and the…

5 months ago

Microbes Were Dormant for Over 100 Million Years, But They Were Able to Spring Back to Life

At the bottom of the ocean in the South Pacific Gyre, there's a sediment layer that is among the most…

6 months ago

What Cracked the Earth’s Outer Shell and Started its Plate Tectonics?

Earth's lithosphere is made up of seven large tectonic plates and a number of smaller ones. The theory of plate…

6 months ago

800 Million Years Ago, it Was Raining Asteroids on the Earth and Moon

Natural processes here on Earth continually re-shape the planet's surface. Craters from ancient asteroid strikes are erased in a short…

6 months ago

Organic Matter Could Have Delivered Earth’s Water

The origin of Earth's water is a big piece of the puzzle in Earth's history. Did it come from comets…

6 months ago

This Giant Iceberg Has Been Sailing the Southern Seas for Three Years Now

An iceberg that calved off of from a larger ice formation has spent three years floating on the ocean near…

6 months ago

Even If We Cut Greenhouse Gas Emissions Tomorrow, it Would Take Decades for the Earth to Start Cooling Again

If—or hopefully when—we cut our Greenhouse Gas (GHG) emissions, we won't notice much difference in the climate. The Earth's natural…

6 months ago

The Moon Might Be More Metal-Rich Than We Thought

A new study shows that the Moon is more metal-rich than previously thought. That has some far-reaching implications for our…

7 months ago

Last Year’s Total Solar Eclipse on Earth, Seen From the Moon

On July 2, 2019, the Moon cast its shadow on the surface of the Earth. This time, the shadow's path…

7 months ago