A star is a massive, luminous ball of plasma held together by gravity. At the end of its lifetime, a star can also contain a proportion of degenerate matter. The nearest star to Earth is theSun, which is the source of most of the energy on Earth. Other stars are visible from Earth ...
TheAlthat begins numerousstarnames indicates their Arabic origin,albeing the Arabic definite article “the”:Aldebaran(“the Follower”),Algenib(“the Side”),Alhague (“the Serpent Bearer”), andAlgol(“the Demon”). A conspicuous exception isAlbireo in Cygnus, possibly a corruption of the wo...
(Perrot and Grenier, 2003) within ∼500 pc of the sun. Massive-star concentrations appear at prominent lines-of-sight, such as the Cygnus region [75°<l<100°], the Vela region [260°<l<270°], the anticenter region [170°<l<210°], and the Sco/Cen region [300°<l<360°] ...
Cygnus X-1Artist's conception of the X-ray source Cygnus X-1. A black hole pulls in matter from a stellar companion. Although nolightcan be detected coming from within a black hole, the presence of a black hole may bemanifestedthrough the effects of its gravitational field, as, for exam...
Here we present the first map of the 372 GHz ortho-H2D+ and N2H+ 4-3 transition in the DR21 filament of Cygnus-X with the JCMT, and N2D+ 3--2 and dust continuum with the SMA. We have discovered five very extended (<= 34000 AU diameter) weak structures in H2D+ in the ...
I tried to scan the top half of chart 13 containing Cygnus for different editions and then try to resize them to post in here. Pardon any waviness, etc, from an old man trying to use his wand scanner... Marty 1910 FIRST EDITION ...
The term Lacerta was coined by Hevelius, who intended to fill a gap between the constellations of Cygnus and Andromeda with this small and 'insignificant' constellation. Location and Main Features Lacerta is nestled in between the constellations of Andromeda, Cygnus, Cepheus, and Pegasus in the ...
NGC 6811is a dense, round cluster, with a diameter of 20 arcminutes. Five brighter stars are easily seen, and the cluster has a granular appearance. Collinder 419is an obscure cluster in Cygnus. It surrounds stars located half a degree west of Sadr (the star between Deneb and Albireo)....
Cygnus star cluster. Soon after, the Chenjesu listened as the Ur-Quan brutally conquered the first race they encountered, the Umgah. By 2111 the Spathi had also been subjugated and the Ilwrath, one of the Chenjesu’s closest neighbors, was near defeat. The Chenjesu realized that the...
Sagitta is located in the northern sky, lying nestled between the constellations of Aquila, Hercules, and Cygnus. With its northern declination, it is best observed during the late summer months from both hemispheres. Despite being the third smallest constellation in the sky, covering only about ...