Sh2-106 is an emission nebula and a star formation region in the constellation Cygnus estimated to be around 2,000 light-years from Earth. A young, massive star in the centre of the nebula emits jets of hot gas from its poles, forming the bipolar structure. The nebula is about 2 light-years across. Image credit: NASA, ESA, and the Hubble Heritage Team (STScI/AURA).The bipolar star-forming region, called Sharpless 2-106, looks like a soaring, celestial snow angel in this image from the NASA/ESA Hubble Space Telescope. The outstretched “wings” of the nebula record the contrasting imprint of heat and motion against the backdrop of a colder medium. Twin lobes of super-hot gas, glowing blue in this image, stretch outward from the central star. This hot gas creates the “wings” of our angel. A ring of dust and gas orbiting the star acts like a belt, cinching the expanding nebula into an “hourglass” shape.
This new NASA/ESA Hubble Space Telescope image reveals the beating heart of one of the most visually appealing, and most studied, supernova remnants known — the Crab Nebula in the constellation Taurus. At the centre of this nebula the spinning core of a deceased star breathes life into the gas that surrounds it.
Around half of the star formation in the local universe arises from minor mergers between galaxies, according to data from the Sloan Digital Sky Survey. Disruptions to the shapes of spiral galaxies, caused by interactions with their smallest neighbours, points to increased star formation. Evidence suggests that minor galactic mergers are therefore important drivers of galaxy evolution.
Astronomers find no signs of first-generation population III stars in gravitationally lensed galaxies dating back to within 500 million years of the Big Bang.