Between 2 million and three million years in the past, the photo voltaic system encountered turbulence on a galactic scale, colliding with a dense interstellar cloud that will have altered each the local weather and evolution on Earth.

Researchers have solely not too long ago been capable of map the trail of the solar via our galaxy, significantly in relation to the comparatively dense hydrogen clouds that additionally journey via the interstellar medium, the huge house between star methods.

Now, a crew led by Merav Opher at Boston College…