A nebula is a cloud of dust and gas in space that's illuminated and glows like a shining cosmic cloud. Nebulae are clouds of gas and dust and there are many scattered throughout the Milky Way, mainly in the gal
In space, there are very cold and dense regions known as molecular clouds. A molecular cloud consists of a huge amount of gases and dust, from which stars and planets are finally formed. The typical physical conditions of molecular clouds are listed in Table 1. The number density of gas re...
In subject area: Physics and Astronomy Collapsing clouds refer to the process where a cloud of gas and dust undergoes gravitational collapse, leading to the formation of dense cores that eventually give rise to stars or stellar systems.
All stars are born in the collapse of molecular clouds, vast pockets of dust, gas, and ice in space. These clouds can be seen from Earth; an example is the famous Pillars of Creation, whiich are some four light-years in length.
At this time of year in the early evening, the core of the Milky Way galaxy looms just above the southern horizon. The actual core of our galaxy is blocked from our view by countless stars and clouds of gas and dust, but the overall glow shines through. You may like Night sky, May...
Cosmic DustGalactic RadiationGas DensityH LinesData presently available on far infrared (10 鈥 300 m) thermal emission and carbon monoxide millimeter radiation are compiled in order to generate a sample of objects where the thermal radiation of the dust mixed with the molecular hydrogen can be ...
processes. These are the gridcell temperatures that each gridcell has equilibrated to over decades, after the net water vapor feedback and the cloud feedback and any other feedback have had their effect. Thus, this gives us a good idea of the long-term net cloud feedback at various ...
(It is now known that dust and gas in the plane of the galaxy diminish the intensity of light passing through it, whether from sources inside it or beyond.) In 1864, Huggins studied the Orion nebula and found it to display a bright line spectrum similar to that of a hot gas. Also, ...
Giant molecular clouds are large clouds of gas and dust in space that are typically surrounded by ionized regions. They have the potential to emit nuclear gamma-ray lines and positron production due to the presence of cosmic-rays. These clouds are of interest for future observations, especially ...