Ice Age Archives - Page 2 of 2 - Astrobiology

Snowball Earth -- NASA

Arctic / Antarctic / Alpine, Atmospheres, Climate, Weather, Biogeochemical Cycles & Geobiology, Biosignatures & Paleobiology, Cryobiology, Extremeophiles and Extreme Environments, Habitable Zones, Icy Worlds, Origin & Evolution of Life, Status Report

Experimental Snowball Earth Viscosity Drives the Evolution of Motile Multicellularity

by Keith CowingAugust 13, 2024August 13, 2024

During the 70-million-year span of the Cryogenian Snowball Earth glaciations, low ocean temperatures beneath global sea ice increased water viscosity up to fourfold.

Snowball Earth -- NASA

Atmospheres, Climate, Weather, Cryobiology, Extinction events, Gaia - Planetary Perspectives, Icy Worlds, Press Release

Global Deep Freeze Periods During Snowball Earth Events

by Keith CowingFebruary 19, 2024February 19, 2024

A Yale-led research team has picked a side in the “Snowball Earth” debate over the possible cause of planet-wide deep freeze events that occurred in the distant past.

Artist's impression of how astronomical forces affect the Earth's motion, climate, and ice sheets. CREDIT NAOJ

Atmospheres, Climate, Weather, Biogeochemical Cycles & Geobiology, Extinction events, Press Release

Astronomical Forces Control Earth’s Ice Age Cycles

by Keith CowingMay 17, 2023May 17, 2023

A research team, composed of climatologists and an astronomer, have used an improved computer model to reproduce the cycle of ice ages (glacial periods) 1.6 to 1.2 million years ago.