... The Sun Erupts . ... The Sun is a seething ball of extremely hot gas. ... Orion Star Colours . ... Clouds of glowing hydrogen gas mingle with dark dust lanes in the Trifid Nebula, a star forming region in the constellation Sagittarius. ... Hercules Galaxies . ... This cluster is loaded with gas and dust rich, star forming, spiral galaxies but has relatively few elliptical galaxies, which lack gas and dust and the associated newborn stars. ... Vega . ... Vega is a bright blue star 25 light years away...