Earth
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…
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…
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…
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…
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…
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…
It Should Be Easiest to Search for Young Earth-like Planets When They’re Completely Covered in Magma
How did Earth evolve from an ocean of magma to the vibrant, life-supporting, blue jewel it is now? In its…
Astronomers Have Found the Star/Exoplanet Combo That’s the Best Twin to the Sun/Earth
At times, it seems like there's an indundation of announcements featuring discoveries of "Earth-like" planets. And while those announcements are…
Ocean Circulation Might Be the Key to Finding Habitable Exoplanets
We've found thousands and thousands of exoplanets now. And spacecraft like TESS will likely find thousands and thousands more of…
Magnetic north is migrating towards Siberia. Here’s why
The North Pole ain't what it used to be. Well, the geographic North Pole stays fixed over time (mostly because…