News & Views |
Featured
-
-
Article |
Eleven-year solar cycles over the last millennium revealed by radiocarbon in tree rings
11-year solar cycles consistently occurred throughout the last thousand years, according to a synthesis of annually resolved tree ring radiocarbon records from central Europe.
- Nicolas Brehm
- , Alex Bayliss
- & Lukas Wacker
-
News & Views |
Atmosphere's solar shock
Frequent storms on the young Sun would have ejected energetic particles and compressed Earth's magnetosphere. Simulations suggest that the particles penetrated the atmosphere and initiated reactions that warmed the planet and fertilized life.
- Ramses Ramirez
-
Letter |
Prebiotic chemistry and atmospheric warming of early Earth by an active young Sun
An energetic process is needed to convert N2 into compounds essential for life. Simulations show that interactions between powerful solar flares and Earth’s magnetic field could have facilitated nitrogen fixation in the early atmosphere.
- V. S. Airapetian
- , A. Glocer
- & W. Danchi
-
-
News & Views |
Lunar water from the solar wind
The surface of the Moon is not totally devoid of water. Analyses of lunar soils reveal that impact glasses contain significant amounts of water, with an isotopic composition that is indicative of an origin from the solar wind.
- Marc Chaussidon
Tree rings capture an unruly Sun
Astronauts overexposed