Sentences with phrase «as planetary nebula»

This B star lost most of its mass — more than the mass of the sun — into a wind that shines for a while as a planetary nebula.

Low - to medium - mass stars, such as the sun, will eventually swell up into red giants, eventually shedding their outer layers into a ring known as a planetary nebula (early observers thought the nebulae resembled planets such as Neptune and Uranus).

Such «barium stars» may be binaries, where a more massive companion has already thrown off its outer gas envelopes as a planetary nebula in becoming a white dwarf (see HD 147513 AB).

The Hubble telescope has spied a giant celestial «eye,» known as planetary nebula NGC 6751.

The stellar corpses — highly dense objects known as white dwarfs — were spotted inside a dense cloud of gas and dust known as a planetary nebula.

In 1918, Heber D. Curtis correctly classified it as a planetary nebula for the first time.

When that happens, it briefly exhales an extraordinarily beautiful, complex puff of gas known as a planetary nebula.

That glow is what we see as a planetary nebula.

After shining for many millions of years, stars end their lives, mainly, in two ways: very high mass stars die very violently as supernovae, while low mass stars end as planetary nebulae.

Astronomers know that while large stars can end their lives as violently cataclysmic supernovae, smaller stars end up as planetary nebulae — colourful, glowing clouds of dust and gas.

The final stages of life for a star like our Sun result in the star blowing its outer layers out into the surrounding space, forming objects known as planetary nebulae in a wide range of beautiful and striking shapes.

Eventually, Stars Aa and Ab will lose much of their current mass, from intensified stellar winds that eventually puff out their outer gas envelopes of hydrogen and helium (and lesser amounts of higher elements such as carbon and oxygen) into interstellar space as planetary nebulae.

When the helium ignites, the outer layers of the star are blown off in huge clouds of gas and dust known as planetary nebulae.

The gaseous clouds known as planetary nebulae are only superficially similar to other types of nebulae.

The problems in this booklet investigate space phenomena, space travel and mathematics applications such as planetary nebulae, collapsing gas clouds, space shuttle launch trajectory, evaluating functions, and differentiation.

Not exact matches

As big planetary nebulae are the most common, we will use our new scale in making an unbiased census of planetary nebulae in the Milky Way, which will then help answer some important research questions.»

Planetary nebulae, which got their name after being misidentified by early astronomers, are formed when an ageing star weighing up to eight times the mass of the sun ejects its outer layers as clouds of luminous gas (see Why stars go out in a blaze of glory).

Invisible dark matter may have started out as hot white dwarfs like this one in the middle of planetary nebula NGC 2440.

As well as this black hole, Messier 15 is known to house a planetary nebula, Pease 1 [4]-- and it was the first globular known to contain one of these objects [5As well as this black hole, Messier 15 is known to house a planetary nebula, Pease 1 [4]-- and it was the first globular known to contain one of these objects [5as this black hole, Messier 15 is known to house a planetary nebula, Pease 1 [4]-- and it was the first globular known to contain one of these objects [5].

Astronomers were thrilled when they first saw the Hubble images of the planetary nebulas ngc 7027 and crl 2688, also known as the Egg nebula.

The astronomers suggest that the orderly behaviour of the planetary nebulae could have been caused by the presence of strong magnetic fields as the bulge formed.

One type of such nebulae, known as bipolar planetary nebulae, create ghostly hourglass or butterfly shapes around their parent stars.

But while only the occasional star makes its exit as a supernova, most stars in the cosmic census — including our sun — will be blown away by the winds of change, and their gravestones will be planetary nebulas.

Many of these planetary nebulas have a funny kind of inverted mirror symmetry, with their tops and bottoms reflected and then reversed, as in the letter s.

This pretty planetary nebula is found in the constellation of Vela and is also known as the Eight - Burst nebula.

The ESO's Very Large Telescope (VLT) has captured a beautiful image of a planetary nebula known as NGC 7009, or the Saturn Nebula, as part of a wider study attempting to unravel the processes that give these vast cosmic clouds of dust and glowing gas their distinctive nebula known as NGC 7009, or the Saturn Nebula, as part of a wider study attempting to unravel the processes that give these vast cosmic clouds of dust and glowing gas their distinctive Nebula, as part of a wider study attempting to unravel the processes that give these vast cosmic clouds of dust and glowing gas their distinctive shape.

As usual for planetary nebulae, M76's visual magnitude is much brighter (9.6 according to Don Machholz» personal estimate, 10.1 according to Hynes; the present author thinks this is close to his own perception) than photographically (most sources agree on 12.2 mag photographically).

In tribute to Hubble's longest - running optical camera, planetary nebula K 4 - 55 has been imaged as WFPC2's final «pretty picture.»

Actually, as for almost all planetary nebulae, most of the visible light is even emitted in one spectral line only, in the green light at 5007 Angstrom (see our planetary nebula description)!

White dwarfs form as the outer layers of a low - mass red giant star puff out to make a planetary nebula.

These stars end their lives as stunning planetary nebula, which enrich the next generation of stars with heavier elements, encouraging stellar evolution in our Milky Way.

Composite picture of the Cat's Eye Nebula (NGC 6543), combining three images taken by the Hubble Space Telescope.This planetary nebula has an unusually complicated structure, with concentric shells (seen as bright rings), jets (the projections at upper left and lower right), and a number of details that suggest complex interactions of shock Nebula (NGC 6543), combining three images taken by the Hubble Space Telescope.This planetary nebula has an unusually complicated structure, with concentric shells (seen as bright rings), jets (the projections at upper left and lower right), and a number of details that suggest complex interactions of shock nebula has an unusually complicated structure, with concentric shells (seen as bright rings), jets (the projections at upper left and lower right), and a number of details that suggest complex interactions of shock waves.

This planetary nebula is certainly the most impressive object of its kind in the sky, as the angular diameter of the luminous body is nearly 6 arc minutes, with a faint halo extensing out to over 15», half the apparent diameter of the Moon (Millikan 1974).

This planetary nebula, known as NGC 650 or the Little Dumbbell, is about 2,500 light - years from Earth in the Perseus... view image

Occasionally these objects look something like planetary nebulae, as in the case of the Crab Nebula, but they differ from the latter in three ways: (1) the total mass of their gas (they involve a larger mass, essentially all the mass of the exploding star), (2) their kinematics (they are expanding with higher velocities), and (3) their lifetimes (they last for a shorter time as visible nebulae).

As for most planetary nebulae, the distance of M27 (and thus true dimension and intrinsic luminosity) is not very well known.

This allows it to study a variety of astronomical objects, such as the molecular gas in planetary nebulae, molecules on active comets, the heating mechanisms of red giants and the afterglows of gamma - ray bursts.

Planetary nebulae are dynamic and tend to quickly fade in brightness as the progenitor star transitions to the white dwarf branch.

In 1901, Annie Jump Cannon returned to the lettered types, but dropped all letters except O, B, A, F, G, K, and M, used in that order, as well as P for planetary nebulae and Q for some peculiar spectra.

This planetary nebula, known as NGC 650 or the Little Dumbbell, is about 2,500 light - years from Earth in the Perseus constellation.

As your student creates these 4 interactive foldables, he will learn about asteroids, including the following: • Stars Voabulary Booklets - Nebula, Protostar, Red Giant, Supergiant, Planetary Nebula, White Dwarf, Black Hole, Neutron Star, Black Dwarf, Hypergiant • Constellations Booklets - Little Dipper, Big Dipper, Bootes, Cygnus, Orion, Triangulum, and more • Interesting Facts About Stars This product is a downloadable ebook in PDF format.