Interstellar medium
Videos
The interstellar medium is the matter and radiation that exists in the space between the star systems in a galaxy. This matter includes gas in ionic, atomic, and molecular form, as well as dust and co
Voyager 1 is the first human made object to reach the interstellar medium.
Three-dimensional structure in Pillars of Creation.
Interstellar medium and astrosphere meeting
This light-year-long knot of interstellar gas and dust resembles a caterpillar.
Heliosphere
Videos
The heliosphere is the magnetosphere, astrosphere, and outermost atmospheric layer of the Sun. It takes the shape of a vast, tailed bubble-like region of space. In plasma physics terms, it is the cavi
Interstellar medium
…researchers, this implies that "the density gradient is a large-scale feature of the VLISM (very local interstellar medium) in the general direction of the heliospheric nose". The interstellar medium begins where the interplanetary medium of the Solar System ends. The solar wind slows to subsonic velocities at the termination…
The Sun photographed at a wavelength of 19.3 nanometers (ultraviolet)
Illustration of the heliosphere as released on 28 June 2013 which incorporates results from the Voyager spacecraft. The heliosheath is between the termination shock and the heliopause.
The bubble-like heliosphere moving through the interstellar medium.
Energetic neutral atom (ENA) detection is more concentrated in one direction.