carbon-14
Earth’s Old Trees Keep A Record of Powerful Solar Storms
Most of the time the Sun is pretty well-mannered, but occasionally it's downright unruly. It sometimes throws extremely energetic tantrums.…
4 weeks ago
Past Supernovae Could be Written Into Tree Rings
A new study by CU Boulder geoscientist Robert Brakenridge shows how nearby supernovae could have disrupted Earth's climate in the…
4 years ago
What is Carbon Dating?
Radiocarbon dating (aka. carbon dating) measures the half-life of carbon-14, which occurs naturally in our atmosphere, to determine the age…
8 years ago
Are Gamma Ray Bursts Dangerous?
Gamma ray bursts are the most energetic explosions in the Universe, outshining the rest of their entire galaxy for a…
10 years ago
How Do We Know How Old Everything Is?
We hear that rocks are a certain age, and stars are another age. And the Universe itself is 13.7 billion…
10 years ago