The interstellar medium (ISM) is the matter and radiation that exists in the space between the star systems in a galaxy. This matter includes gas in ionic...

galaxy. Interstellar space contains an interstellar medium of sparse matter and radiation. The boundary between an astrosphere and interstellar space is...

the Universe's recycling processes; in the clouds of the diffuse interstellar medium, in molecular clouds, in the circumstellar dust of young stellar...

Timeline of knowledge about the interstellar medium and intergalactic medium: 1848 — Lord Rosse studies M1 and names it the Crab Nebula. The telescope...

Bubble, a low-density region of the galactic interstellar medium. Within this region is the Local Interstellar Cloud (LIC), an area of slightly higher hydrogen...

"astrochemistry" may be applied to both the Solar System and the interstellar medium. The study of the abundance of elements and isotope ratios in Solar...

comets, move. The IPM stops at the heliopause, outside of which the interstellar medium begins. Before 1950, interplanetary space was widely considered to...

physics terms, it is the cavity formed by the Sun in the surrounding interstellar medium. The "bubble" of the heliosphere is continuously "inflated" by plasma...

heliosphere and to begin exploring the interstellar medium. Voyager 1 crossed the heliopause and entered interstellar space on August 25, 2012, making it...

This is a list of molecules that have been detected in the interstellar medium and circumstellar envelopes, grouped by the number of component atoms....

differently, an interstellar cloud is a denser-than-average region of the interstellar medium, the matter and radiation that exists in the space between the star...

kiloparsec. For Earth-bound observers, extinction arises both from the interstellar medium and the Earth's atmosphere; it may also arise from circumstellar...

harvested from the interstellar medium, or projected over immense distances. A knowledge of the properties of the interstellar gas and dust through...

of spacecraft propulsion for interstellar travel. A fast moving spacecraft scoops up hydrogen from the interstellar medium using an enormous funnel-shaped...

upwind of the interstellar medium and roughly 200 AU from the Sun downwind. Here the solar wind collides with the interstellar medium and dramatically...

ethylene oxide) to be detected in space. Its stability in the (dilute) interstellar medium shows that its tautomerization does not happen unimolecularly, a...

Interstellar Boundary Explorer (IBEX or Explorer 91 or SMEX-10) is a NASA satellite in Earth orbit that uses energetic neutral atoms (ENAs) to image the...

The Voyager program is an American scientific program that employs two interstellar probes, Voyager 1 and Voyager 2. They were launched in 1977 to take advantage...

Interplanetary medium - interplanetary dust Interstellar space - Interstellar medium - interstellar dust Intergalactic space - Intergalactic medium - Intergalactic...

the universe. It is stable in the interstellar medium (ISM) due to the low temperature and low density of interstellar space. The role that H+3 plays in...

it is truncated—possibly by an encounter with another galaxy. Its interstellar medium consists of diffuse gas enriched by elements emitted from evolved...

has the distinction of being the first molecule discovered in the interstellar medium using solely radio interferometers; in all previous ISM molecular...

can be prepared from acrolein. Propynal has been observed in the interstellar medium. It is hypothesized to be formed from a carbon monoxide-acetylene...

Interstellar ice consists of grains of volatiles in the ice phase that form in the interstellar medium. Ice and dust grains form the primary material out...

explore the interstellar medium. McNutt, Ralph; Paul, Michael; Brandt, Pontus; Kinnison, Jim. "Interstellar Probe: Humanity's Journey to Interstellar Space"...

a branch of astronomy, star formation includes the study of the interstellar medium (ISM) and giant molecular clouds (GMC) as precursors to the star...

the interstellar medium. Complex multi-phase structure, including relativistic particles and magnetic field, makes simulation of interstellar medium difficult...

1989. The spacecraft is in its extended mission of studying the interstellar medium. It is at a distance of 140.32 AU (21.0 billion km; 13.0 billion mi)...

from Earth, thrust (drag) for deceleration for the magsail in the interstellar medium is relatively large, and both the magsail and magnetoplasma sail...

Negative methane, the negative ion of methane, is also known to exist in interstellar space. Its mechanism of formation is not fully understood. Methane has...