Gaseous nebulae as a research area encompasses the observational, theoretical, and numerical study of ionized, atomic, and molecular gas clouds in interstellar and circumstellar environments, focusing on their physical conditions, chemical composition, and dynamical evolution. Research addresses radiative transfer, emission-line diagnostics, photoionization and shock-excitation mechanisms, and the impact of stellar feedback from massive stars and supernovae on nebular structure. It also investigates nebulae as laboratories for plasma physics, dust–gas interactions, and nucleosynthesis yields, and as probes of galactic structure, star-formation processes, and the interstellar medium across different metallicities and cosmic epochs.
By analyzing the data from the HASH database, astronomers have conducted a comprehensive study of nearly 1,500 planetary nebulae in the Milky Way galaxy. Results of the study, published October 15 on the arXiv preprint server, ...
The universe is a slow-changing place. While it's mostly true that the heavens and the deep-sky objects in it will look largely the same across an average human lifetime, there are dramatic examples that defy this trend.
Astronomy
Sep 21, 2025
0
84
By analyzing the available optical spectroscopic data, astronomers have investigated a nearby planetary nebula designated IC 418, also known as the Spirograph Nebula. Results of the study, published August 20 in The Astrophysical ...
Since the discovery of planetary nebulae in the late 1700s, astronomers have learned that these expanding shells of glowing gas expelled by low-intermediate mass stars late in their lives can come in all shapes and sizes. ...
Astronomy
Jul 30, 2025
0
75
Orion Nebula, Pleiades and Hyades: The latest research results indicate that these famous star clusters represent the different phases of life of one and the same star system. A team of astrophysicists at the Institute for ...
Astronomy
Jul 18, 2025
0
137
In anticipation of the upcoming 35th anniversary of the NASA/ESA Hubble Space Telescope, ESA/Hubble is continuing the celebrations with a new view of the Eagle Nebula. This vast stellar nursery displays a towering spire of ...
Astronomy
Apr 18, 2025
0
59
The swirling, paint-like clouds in the darkness of space in this stunning image seem surreal, like a portal to another world opening up before us. In fact, the subject of this NASA/ESA Hubble Space Telescope image is very ...
Astronomy
Apr 11, 2025
0
100
Using the James Webb Space Telescope (JWST), astronomers have observed enigmatic rings in the planetary nebula NGC 1514, visible in the mid-infrared band. Results of the new observations, published Feb. 28 on the arXiv pre-print ...
In this NASA/ESA Hubble Space Telescope image, Hubble once again lifts the veil on a famous—and frequently photographed—supernova remnant: the Veil Nebula. The remnant of a star roughly 20 times as massive as the sun that ...
Astronomy
Mar 3, 2025
0
343
An international team of scientists has produced the clearest three-dimensional view yet of the Ring Nebula—one of the night sky's most iconic celestial objects.
Astronomy
Jan 15, 2025
0
71
