Discovery Alert: An Ice-Cold Earth?
via science.nasa.gov
Short excerpt below. Read at the original source.
Explore the Universe Universe Home Basics Cosmic History Building Blocks Forces Galaxies Overview Types Evolution Large Scale Structures Black Holes Overview Types Anatomy Black Hole Week Stars Overview Types Multiple Star Systems Planetary Systems Exoplanets Exploration Sensing the Universe Telescopes 101 Observatories More News Deep Dives Quick Reads Graphics Glossary Fun & Learning Artist’s concept […]