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[18] [19] This is about ten times the rate observed in our Milky Way galaxy, [20] even though the Milky Way has twice as many stars as NGC 6946. On 27 September 2004, the Type II supernova SN 2004et was observed at magnitude 15.2 and rose to a maximum visual magnitude of 12.7.
Encyclopedia Galactica is the name of a number of fictional or hypothetical encyclopedias containing all the knowledge accumulated by a galaxy-spanning civilization, most notably in Isaac Asimov's Foundation series. The concept of a "future encyclopedia" has become "something iconic among many lovers of the science fiction", and has been reused ...
NGC 6744 (also known as Caldwell 101 or the Pavo Galaxy [3]) is an intermediate spiral galaxy in the constellation Pavo (Peacock). Its velocity with respect to the cosmic microwave background is 802 ± 3 km/s, which corresponds to a Hubble distance of 38.6 ± 2.7 Mly (11.82 ± 0.83 Mpc ). [ 1 ]
Coma Pinwheel Galaxy, Virgo Cluster Pinwheel, M99, NGC 4254, PGC 39578, UGC 7345 [9] Messier 99 or M99 , also known as NGC 4254 or St. Catherine's Wheel , is a grand design spiral galaxy in the northern constellation Coma Berenices approximately 15,000,000 parsecs (49,000,000 light-years ) from the Milky Way . [ 5 ]
After 2012, the Zentradi are estimated to have 1000–2000 fleets of sizes similar to the 4.8-million-ship Boddole Zer Main Fleet in Space War I. [3] [4] [9] However, the UN government of allied Humans and Zentradi became the reigning hegemony in near-Earth galactic space. [6]
The properties of NGC 2841 are similar to those of the Andromeda Galaxy. [4] It is home to a large population of young blue stars, and a few H II regions. [9] The luminosity of the galaxy is 2 × 10 10 L ☉ and it has a combined mass of 7 × 10 10 M ☉. [6] Its disk of stars can be traced out to a radius of around 228 kly (70 kpc). This disk ...
Last year, more than 115 million Americans were projected to drive 50+ miles during the holiday season. Unfortunately, according to the National Safety Council, both Christmas and New Year's Eve ...
Relative position of the Sun to the center of the Galaxy and 14 pulsars with their periods denoted. The radial pattern on the left of the plaque shows 15 lines emanating from the same origin. Fourteen of the lines have corresponding long binary numbers, which stand for the periods of pulsars, using the hydrogen spin-flip transition frequency as ...