Interstellar space refers to the vast, empty regions between star systems within a galaxy. It's composed of gas, dust, cosmic rays, and magnetic fields, linking...
Interstellar space is the physical space and matter that exists between star systems within a galaxy, beyond the heliosphere (the influence of a star's solar wind) but within the gravitational pull of the galaxy itself.
The Interstellar Medium (ISM) primarily consists of gas (mostly hydrogen and helium), cosmic dust, cosmic rays, and magnetic fields. These components vary in density and temperature across different regions.
Yes, NASA's Voyager 1 and Voyager 2 probes have both successfully exited the heliosphere and are now traveling through interstellar space, sending back data about this uncharted cosmic frontier.
The closest star system to our Sun is Alpha Centauri, located approximately 4.24 light-years away. This vast distance highlights the immense scale of interstellar travel and exploration.