Sentences with phrase «form bright nebulae»

A planetary nebula forms when Sun - like stars gently eject their outer gaseous layers that form bright nebulae with amazing and confounding shapes.

Not exact matches

This huge, dusky object forms a conspicuous silhouette against the bright, starry band of the Milky Way and for this reason the nebula has been known to people in the southern hemisphere for as long as our species has existed.

Four stars collectively called the Trapezium form the center of the nebula, which to our eye looks like the brightest star in the sword of Orion.

It is actively forming new stars in regions that are so bright that some can even be seen from Earth with the naked eye, such as the Tarantula Nebula.

Of particular interest is a star at the center of the nebula, just below the brightest region, whose intense light and furious winds appear to have driven out the local gas, forming a spherical void perhaps only 30,000 years agoquite recent, by astronomical standards.

While the bright part of the nebula is of about 65 arc seconds in diameter (more accurately, the «cork» is about 42x87», the «wings» 157x87»), this nebula is surrounded by a faint halo covering a region of 290 arc seconds in diameter (Millikan, 1974); this material was probably ejected in the form of stellar winds from the central star when it was still in the Red Giant phase of evolution.

Bright nebulae are usually vast concentrations of gas and dust in which stars have been or are being formed.

NGC 6910 and M29 (NGC 6913) are the two brightest star clusters in this region, and both of these star clusters formed in this nebula.

The second method is to plot the giant HII regions (bright nebulae of ionised hydrogen) which are usually formed in the spiral arms.

The structure of the bright central region is a result of the fast stellar wind from the central star interacting with the material expelled when the nebula was formed.