Another possible explanation is that the black hole might have begun its life not with the
collapse of a single star, but with the collapse of a very large gas cloud.
About 60 percent of the binary systems studied have debris disks, suggesting the potential for planets, whereas only 20
percent of single stars have them.
«For the evolution
of single stars like our sun, by and large, we got it right, from birth to death.
GHOST IN THE SHELL What looked like an ordinary supernova, shown in this artist's illustration, might be the
result of a single star exploding at least three times, blowing off expanding shells of gas each time.
One hypothesis, by astrophysicist Avi Loeb of the Harvard - Smithsonian Center for Astrophysics (CfA) in Massachusetts, suggested that the two black holes had formed in the
belly of a single star.
Through this process, the astronomers eventually were able to determine that the event was caused by the
magnifying of a single star's light due to the foreground passage of an orbiting planet - type object with a mass of approximately 0.5 times that of Jupiter.
[2] An earlier result with ALMA showed an
example of a single star with material flowing inwards from the outer part of its disc.
«I also can't stress enough the
value of the single Star 360 data source — around which to build other instructional systems and as a common discussion point for educators.
Nuclear physicists have long thought that those elements are generated in r - process, but haven't known where in the cosmos that happens — whether in the
collapse of single stars or in merging neutron stars.
Previous studies of star formation primarily focused on formation
of single stars like the Sun, and a standard picture of single star formation has been established.