Life on our planet appeared early in Earth's history. Surprisingly early, since in its early youth our planet didn't have much of the chemical ingredients necessary for life to evolve. Since prebiotic chemicals such as sugars ...
Astrobiology
Feb 26, 2024
0
13
Micrometeoroid strikes are an unavoidable aspect of operating any spacecraft, which routinely sustain many impacts over the course of long and productive science missions in space. Between May 23 and 25, NASA's James Webb ...
Space Exploration
Jun 8, 2022
1
74
A team of researchers affiliated with several institutions in China and one in Australia created a model to explain the differences found on the near and far sides of the moon. In their paper published in the journal Nature ...
A cluster of comet fragments believed to have hit Earth nearly 13,000 years ago may have shaped the origins of human civilisation, research suggests.
Earth Sciences
Jun 24, 2021
6
5241
Just less than 13,000 years ago, the climate cooled for a short while in many parts of the world, especially in the northern hemisphere. We know this because of what has been found in ice cores drilled in Greenland, as well ...
Earth Sciences
Oct 2, 2019
5
151
Every single day, many tons of tiny rocks—smaller than pebbles—hit the Earth's atmosphere and disintegrate. Between frequent shooting stars we wish on in the night sky and the massive extinction-level asteroids that we ...
Space Exploration
Jun 27, 2019
1
3
On a ho-hum day some 12,800 years ago, the Earth had emerged from another ice age. Things were warming up, and the glaciers had retreated.
Earth Sciences
Feb 1, 2018
69
8909
Conditions in the vast universe can be quite extreme: Violent collisions scar the surfaces of planets. Nuclear reactions in bright stars generate tremendous amounts of energy. Gigantic explosions catapult matter far out into ...
General Physics
Apr 15, 2016
35
2542
Approximately 790,000 years ago, there were multiple cosmic impacts on earth with global consequences. Geoscientists from Heidelberg University reached this conclusion after dating so-called tektites from various parts of ...
Earth Sciences
Feb 24, 2016
7
25
At the end of the Pleistocene period, approximately 12,800 years ago—give or take a few centuries—a cosmic impact triggered an abrupt cooling episode that earth scientists refer to as the Younger Dryas.
Earth Sciences
Jul 27, 2015
132
6624
