Sentences with phrase «called planetary nebulae»

This star system could explain a dazzling variety of glowing shapes uncovered by Hubble that are seen around dying stars, called planetary nebulae, researchers say.

The Hubble telescope has shown us that the shrouds of gas surrounding dying, Sun - like stars (called planetary nebulae) come in a variety of strange shapes, from an «hourglass» to a «butterfly» to a «stingray.»

Like many other so - called planetary nebulae, IC 4406 exhibits a high degree of symmetry.

Finally, they expel their outer layers, producing expanding shells of gas called planetary nebulae (figure 2).

These gaseous clouds, called planetary nebulae, are created when stars in the last stages of life cast off their outer layers of material into space.

Soon it collides with the slower, cooler gas ahead of it, piling it up into a bright, dense cloud called a planetary nebula.

Meanwhile, much of the material that once made up the outer layers of the star is released into the surrounding area, and may form something called a planetary nebula (which, despite the name, doesn't actually have anything to do with planets).

The observations have allowed astronomers to construct the most precise three - dimensional model of the glowing gas shroud, called a planetary nebula.

Such shells of matter, called planetary nebulas, are actually observed in large numbers in the sky.

This trio of ghostly images from NASA's Spitzer Space Telescope shows the disembodied remains of dying stars called planetary nebulas.

At this late point in the star's life, the material streaming away is called a planetary nebula.

Not exact matches

More accurate distances between the most common type of «planetary nebulae» and the Earth can be estimated simply with three sets of data: firstly, the size of the object on the sky taken from the latest high resolution surveys; secondly, an accurate measurement of how bright the object is in the red hydrogen - alpha emission line; and thirdly, an estimate of the dimming toward the nebula caused by so called interstellar - reddening.

That phase is called the proto - planetary nebula, and is so short that only a few of these objects are known.

This so - called «planetary nebula» is the aftermath of the death of a star.

The first of these are planetary nebulae, so called because they're round objects that resemble planets.

Not to be left out, astronomers using NASA's Hubble Space Telescope have photographed a festive - looking nearby planetary nebula called NGC 5189.

left - to - right in our image); this is similar to our view of another, fainter Messier planetary nebula, M76, which is called the Little Dumbbell.

So called because the smaller varieties almost resemble planetary disks when viewed through a telescope, planetary nebulae represent a stage at the end of the stellar life cycle rather than one at the beginning.