NASA Finds the Sun May Have Helped Shape Earth’s Climate History
What Happened
NASA-backed research suggests the Sun’s ancient activity and its journey through the Milky Way may have influenced Earth’s climate over millions of years. Scientists found that the Solar System likely passed through dense clouds of interstellar gas and dust, compressing the Sun’s protective heliosphere and exposing Earth to more cosmic radiation, potentially affecting long-term climate patterns. Researchers also revisited how the young, dimmer Sun may have helped keep early Earth warm despite emitting less energy.
Key Takeaways
The study suggests Earth’s climate history may be shaped not only by factors on Earth, such as greenhouse gases and orbital changes, but also by the Sun’s evolving environment and its movement through the galaxy.