[SunkenCiv]

The rest of the Iron-60 keyword, chrono:

• Do you like Earth's solid surface and life-inclined climate? Thank your lucky (massive) star [2019]
• Researchers consider whether supernovae killed off large ocean animals at dawn of Pleistocene [2018]
• Our Solar System Was Born in the Bubble Created by the Death of a Giant Star, Say Scientists [2018]
• Earth Barraged By Supernovae Millions Of Years Ago, Debris Found On Moon [2017]
• Did a supernova two million years ago brighten the night sky and give our ancestors cancer? [2016]
• Supernovae showered Earth with radioactive debris [2016]
• Violent Past: Young sun withstood a supernova blast [2013]
• Hubble boffins: Incredibly old supernova could explain EVERYTHING [2013]
• Researcher points to Sun as likely source of eighth-century 'Charlemagne event' [2012]
• Ancient supernovae may be recorded in Antarctic ice [2009]
• Creating Elements after BB: Where did the Supernova's Go?(Vanity) [2007]
• Supernova debris found on Earth [2004]
• Theory Proposes New View of Sun and Earth's Creation [2004]
• Astronomy Picture of the Day 05-23-04 [2004]
• Did a gamma-ray burst devastate life on Earth? [2003]
• How star blasts forged mankind [2002]
• Supernova "Smoking Gun" Linked To Mass Extinctions [2002]

[SunkenCiv]

The rest of the Charlemagne Event keyword, chrono:

• Over A Thousand Years Ago, The Sun Exploded -- And Changed Life On Earth Forever [2015]
• Solar proton event seen in paleo records (Carbon 14 in Tree Rings) [2013]
• Did An 8th Century Gamma Ray Burst Irradiate Earth? [2013]
• Sky 'Crucifix' in Ancient Text May Be Mystery-Solving Supernova [2012]
• Mysterious radiation burst recorded in tree rings [2012]
• Did a gamma-ray burst devastate life on Earth? [2003]