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Detected in 2017 and observable for only a few weeks, the first known interstellar object to pass through the solar system confounded astronomers, sparking speculation it could be a giant snowflake, h...
From stardust to pale blue dot:Carbon's interstellar journey to Earth（图）
From stardust pale blue dot Carbon interstellar journey Earth
2021/4/16
We are made of stardust, the saying goes. U.S. National Science Foundation-funded research at the University of Michigan reveals that the statement may be more true than we thought.The ...
ALMA reveals unusual composition of interstellar comet 2I/Borisov（图）
ALMA unusual composition interstellar comet 2I/Borisov
2020/4/29
ALMA reveals unusual composition of interstellar comet 2I/Borisov.
'Oumuamua interstellar object was not an alien spacecraft（图）
Oumuamua interstellar object alien spacecraft
2019/10/23
The first known interstellar object to visit our solar system was discovered on Oct. 19, 2017, by the Panoramic Survey Telescope and Rapid Response System 1 Telescope located at the University of Hawa...
In October astronomers were surprised by a visitor that came racing into our Solar System from interstellar space. Now, researchers using the Gemini Observatory have determined that the first known ob...
Cosmic dust is not simply something to sweep under the rug and forget about.Instead, National Science Foundation (NSF)-funded astronomers are studying and even mapping it to learn more about what it m...
Cosmic dust is not simply something to sweep under the rug and forget about.Instead, National Science Foundation (NSF)-funded astronomers are studying and even mapping it to learn more about what it m...
ALMA Detects First Traces of Carbon ‘Smog’ Permeating Interstellar Atmospheres of Early Galaxies（图）
ALMA Detects First Traces Smog Permeating Interstellar Atmospheres Early Galaxies
2015/7/13
Astronomers study the elements scattered between the stars to learn about the internal workings of galaxies, their motion and chemistry. To date, however, attempts to detect the telltale radio signatu...
X-Ray Absorption Line Spectroscopy of the Galactic Hot Interstellar Medium
Cyg X–2 V801 Ara
2014/12/24
We present an X-ray absorption line spectroscopic study of the large-scale hot interstellar medium (HISM) in the Galaxy. We detect Ne IX Kα absorption lines in the Chandra grating spectra of seven Gal...
X-Ray Absorption Spectroscopy of the Multiphase Interstellar Medium: Oxygen and Neon Abundances
ISM 4U 1820–303
2014/12/24
X-ray absorption spectroscopy provides a powerful tool in determining the metal abundances in various phases of the interstellar medium (ISM). We present a case study of the sight line toward 4U 1820-...
Chandra Detection of Fe XVII in Absorption: Iron Abundance in the Hot Gaseous Interstellar Medium
4U 1820–303 abundances
2014/12/24
The iron depletion level and the gas-phase iron abundance in the hot (~106 K) interstellar medium (ISM) are critical to our understanding of its energy balance as well as the thermal sputtering, cooli...
An Optical Study of Stellar and Interstellar Environments of Seven Luminous and Ultraluminous X-Ray Sources
M81 NGC 1313
2014/12/24
We have studied the stellar and interstellar environments of two luminous X-ray sources and five ultraluminous X-ray sources (ULXs) in order to gain insight into their nature. Archival Hubble Space Te...
SUPERNOVA REMNANTS AND THE INTERSTELLAR MEDIUM OF M83: IMAGING AND PHOTOMETRY WITH THE WIDE FIELD CAMERA 3 ON THE HUBBLE SPACE TELESCOPE
supernova star-forming galaxy M83
2014/12/20
We present Wide Field Camera 3 images taken with the Hubble Space Telescope within a single field in the southern grand design star-forming galaxy M83. Based on their size, morphology, and photometry ...
Interstellar Mystery Solved by Supercomputer Simulations
Interstellar Mystery Solved Supercomputer Simulations
2014/12/30
An interstellar mystery of why stars form has been solved thanks to the most realistic supercomputer simulations of galaxies yet made.Theoretical astrophysicist Philip Hopkins of the California Instit...
Turbulence in the interstellar medium
Many variables Spectral imaging Observation The interstellar medium. The star gas
2014/12/9
The multivariate technique of principal component analysis (PCA) is a powerful statistical tool with which to describe spectral line imaging observations of the molecular interstellar medium. In parti...