atmosphere

What did we breathe back then?

If we were there, ‘back then’, that is… A new study supported by the NASA Astrobiology Institute (NAI) has revealed details about the composition of Earth’s atmosphere during the Archean eon, which occurred roughly 4…


Let’s share an atmosphere

Snuggle up, Pluto. The cold and distant dwarf planet may share a thin cloak with its largest moon. Simulations show that nitrogen from Pluto’s atmosphere could be flowing over to its moon Charon. If this…


Why LADEE exists

Until recently, most everyone accepted the conventional wisdom that the moon has virtually no atmosphere. Just as the discovery of water on the moon transformed our textbook knowledge of Earth’s nearest celestial neighbor, recent studies…


First (sun)light for IRIS

The moment when a telescope first opens its doors represents the culmination of years of work and planning — while simultaneously laying the groundwork for a wealth of research and answers yet to come. It…


Mars atmosphere, way back

A pair of new papers report measurements of the Martian atmosphere’s composition by NASA’s Curiosity rover, providing evidence about loss of much of Mars’ original atmosphere. Curiosity’s Sample Analysis at Mars (SAM) suite of laboratory…


Our troublesome presence on Earth

From atmospheric changes, to timelapse imagery from Google Earth…our planetary presence is hard to miss. This past week has seen the concentration of carbon dioxide (CO2) in Earth’s atmosphere reach a level of 400 parts-per-million,…