Quantcast

Latest Planetary nebula Stories

e9cfef3ca21f5e971da84eba1967cd381
2010-03-16 09:00:45

The birth of the most massive stars—those ten to a hundred times the mass of the Sun—has posed an astrophysical riddle for decades.

ecfc4d40d06e561c7215b3ed6c2a5a1b
2009-12-07 07:30:00

An extensive study made with ESO’s Very Large Telescope deepens a long-standing mystery in the study of stars similar to the Sun.

1841aa3ada216dec52048edaac20265d1
2009-08-14 07:35:00

A team of scientists in Australia and the United States, led by Associate Professor Miroslav Filipović from the University of Western Sydney, have discovered a new class of object which they call “Super Planetary Nebulae.” They report their work in the journal Monthly Notices of the Royal Astronomical Society.

e4986e3fc964413ef725ebc5e5fcb3ec1
2009-07-20 15:45:00

A star does not die without getting noticed and may even leave the universe with "fireworks."

349fc64f4417d2310bd52d886471080d1
2009-05-20 09:45:00

Using ESO's Very Large Telescope, astronomers have succeeded in measuring the size of giant galaxy Messier 87 and were surprised to find that its outer parts have been stripped away by still unknown effects.

cb7bf78a85b377f0e983c062ac3ab69b1
2009-05-10 13:35:00

The Hubble community bids farewell to the soon-to-be decommissioned Wide Field and Planetary Camera 2 onboard NASA's Hubble Space Telescope.

03001bcd32848419a3b5ef549e7108fe
2009-05-06 07:05:00

Designed and built by JPL, the Wide Field and Planetary Camera 2 has been the workhorse camera on NASA's Hubble Space telescope's since it was added to the observatory in December of 1993.

e56a3af71cb667d500e75c523afa38701
2009-03-12 12:40:00

The "Cat’s Eye" nebula, or NGC 6543, is a well-studied example of a "planetary nebula."

f09ed967ee809fda40603579e146f8391
2009-02-25 08:15:00

A deep new image of the magnificent Helix planetary nebula has been obtained using the Wide Field Imager at ESO's La Silla Observatory.

dbe512a4bf75809b48fc8851393b4a811
2009-01-07 12:55:00

Even some stars go ballistic, racing through interstellar space like bullets and tearing through clouds of gas.


Latest Planetary nebula Reference Libraries

6_d67b2db586c7facec8388b5df78e57912
2004-10-19 04:45:42

Star -- A star is a self-gravitating sphere of plasma in hydrostatic equilibrium that generates energy in its interior through the process of nuclear fusion. Energy from this process radiates into space as electromagnetic radiation and neutrinos. Star formation and evolution As learned by star formation astronomers, stars are born in molecular clouds, regions of higher density of matter, and form by gravitational instability inside those clouds. High mass stars illuminate powerfully...

6_c65813e67f1bee99b0418c20e5cbbe582
2004-10-19 04:45:42

Planetary Nebula -- A planetary nebula is an astronomical object that usually appears nebulous and disk-like in low-resolution observations. Because of this appearance, similar to the appearance of planets in early observations, the "planetary" adjective was attached and has since been retained for historical consistency. According to current observations and models, planetary nebulae in fact have little to do with planets. Instead, as a small star (less than a few times the mass...

6_56b4148a38a885ae7fa748b6f76fe6032
2004-10-19 04:45:42

Nebula -- in astronomy, observed manifestation of a collection of highly rarefied gas and dust in interstellar space. Prior to the 1960s this term was also applied to bodies later discovered to be galaxies, e.g., the so-called Great Nebula in the constellation Andromeda. In 1864, William Huggins confirmed William Herschel's conclusion that nebulae are not swarms of stars by determining that the spectra of nebulae are made of bright lines characteristic of radiating gases. Diffuse...

3_4496f97f2ab92587e01c89f4c01483582
2004-10-19 04:45:40

Saturn Nebula -- The layers of the Saturn Nebula give a complex picture of how this planetary nebula was created. The above picture, taken in April 1996 and released last week, allows a better understanding of the mysterious process that transformed a low-mass star into a white dwarf star. A computer model indicates that the central star of NGC 7009 first expelled the green gas that now appears barrel shaped. This green gas now confines stellar winds flowing from the central star,...

3_9151cc52f19112df52e74a2b45c8ba082
2004-10-19 04:45:40

Ring Nebula -- Discovered by Antoine Darquier de Pellepoix in 1779. The famous ring nebula M57 is often regarded as the prototype of a planetary nebula, and a showpiece in the northern hemisphere summer sky. Recent research has confirmed that it is, most probably, actually a ring (torus) of bright light-emitting material surrounding its central star, and not a spherical (or ellipsoidal) shell, thus coinciding with an early assumption by John Herschel. Viewed from this equatorial...

More Articles (8 articles) »
Word of the Day
tourtiere
  • a meat pie that is usually eaten at Christmas in Quebec
The word 'tourtiere' comes from the French tourte, or passenger pigeon.
Related