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The Boomerang Nebula is a protoplanetary nebula [2] located 5,000 light-years from Earth in the constellation Centaurus. It is also known as the Bow Tie Nebula and catalogued as LEDA 3074547. [3] The nebula's temperature is measured at 1 K (−272.15 °C; −457.87 °F) making it the coolest natural place currently known in the Universe. [4] [5 ...
Size (left) and distance (right) of a few well-known galaxies put to scale. There are an estimated 100 billion galaxies in all of the observable universe. [1] On the order of 100,000 galaxies make up the Local Supercluster, and about 51 galaxies are in the Local Group (see list of nearest galaxies for a complete list).
Galaxy group Visible galaxies Notes Local Group: 5 Apart from the Milky Way, only 4 galaxies are visible to the naked eye. [15] Centaurus A/M83 Group: 2 The Centaurus A galaxy has been spotted with the naked eye by Stephen James O'Meara [16] [17] and M83 has also reportedly been seen with the naked eye. [18] M81 Group: 1
The Hubble Space Telescope captured a brilliant image of spiral galaxy NGC 3254, which has a particularly luminescent and active core emitting as much energy as the rest of the galaxy combined ...
It differs from the “light travel distance” since the proper distance takes into account the expansion of the universe, i.e. the space expands as the light travels through it, resulting in numerical values which locate the most distant galaxies beyond the Hubble sphere and therefore with recession velocities greater than the speed of light c.
In this zoomed-in detail of the Hubble image of Abell 370, the host galaxy where the 44 stars were discovered appears several times: in a normal image (left), and a distorted image appearing as a ...
The galaxy's strange morphology is generally recognized as the result of a merger between two smaller galaxies. [34] Zoom movie of the galaxy Centaurus A, showing different aspects of the galaxy in several wavelengths. Schematic diagram of the components of the Centaurus A galaxy. The bulge of this galaxy is composed mainly of evolved red stars ...
With an apparent magnitude of 3.91, Alpha Fornacis is the brightest star in Fornax. Six star systems have been found to have exoplanets. The Fornax Dwarf galaxy is a small faint satellite galaxy of the Milky Way. NGC 1316 is a relatively close radio galaxy. The Hubble's Ultra-Deep Field is located within Fornax. [1]