What is the heliosphere?

The heliosphere was first theorised by multiple scientists investigating the concept of cosmic rays and the solar wind in the ...
The Debrief

Interstellar Comet 3I/ATLAS is Making Its Way Closer to Earth—And New Research Suggests It Probably Isn’t Alone

Scientists say 3I/ATLAS, one of the rarest comets ever seen, likely isn’t alone and that more interstellar objects may soon ...