Eos cloud

The Eos Cloud is a dark molecular cloud of Hydrogen gas located just 94 parsecs from the Sun near the edge of the Local Bubble. The cloud has a small amount of carbon monoxide contained within it.^[1] It is predicted that in 5.7 million years, the Eos cloud will photoevaporate.^[2][3]

Eos cloud

Nebula
Artist's illustration of the Local Bubble where the Eos cloud is located. The Sun is in the center.
Observation data
Distance	94 pc
Notable features	Located near the edge of the Local Bubble
See also: Lists of nebulae

The cloud was discovered in 2025 by using H₂ far ultraviolet fluorescent line emission. Its close proximity (one of the closest clouds to Earth) to Earth allows for easier observation of how these molecular clouds form and dissipate.^[1]

The cloud is named after Eos, the Greek goddess of the dawn.^[4]