The most spectacular star-forming clouds such as Sgr A and Sgr B2 have masses of this order.

Dust grains incorporated into stars are also formed by complete evaporation, but only a relatively small fraction of the mass of a star-forming cloud actually ends up in stars.

The turbulent star-forming clouds are marked with bubbles, or cavities, carved out by radiation and winds from the most massive of stars.

Commonly observed classes of objects include star-forming molecular clouds in our own and other galaxies, highly redshifted galaxies, evolved stars, and the Galactic Center.

If they are really seeing the collapse in a star-forming cloud, that's tremendously important.

Fermi LAT shows that gamma rays fill cavities in the star-forming clouds.

The Spitzer observations show that just as theory predicts, the density and temperature of the initial star-forming cloud dictates the spacing between the protostars.

Solar sails can launch microbial capsules to nearby stars, or to clusters of new solar systems in star-forming clouds.

It is relatively isolated from other star-forming clouds, so it is unlikely that older pre-main sequence (PMS) stars have drifted into the field.

There is observed evidence that the large, star-forming clouds are confined to a large degree by their own gravity (like stars, planets, and galaxies) rather than by external pressure.