Early Earth
Establishing a New Habitability Metric for Future Astrobiology Surveys
The search for exoplanets has grown immensely in recent decades thanks to next-generation observatories and instruments. The current census is…
2 months ago
Dying Stars Could Have Completely New Habitable Zones
Aging stars that become red giants increase their luminosity and can wreak havoc on planets that were once in the…
10 months ago
How did Earth go From Molten Hellscape to Habitable Planet?
Earth formed from the Sun's protoplanetary disk about 4.6 billion years ago. In the beginning, it was a molten spheroid…
3 years ago
Early Earth Was Almost Entirely Underwater, With Just A Few Islands
Ancient grains of the mineral zircon help researchers paint a picture of Earth in the Hadean Eon, and that picture…
8 years ago
Rethinking the Source of Earth’s Water
Earth, with its blue hue visible from space, is known for its abundant water - predominately locked in oceans -…
12 years ago
Ancient Zircons Help Reveal Early Earth Atmosphere
[/caption] Roughly 2.4 billion years ago, Earth's atmosphere underwent a huge change known as the "Great Oxidation Event". This switch…
13 years ago