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  2. Apparent magnitude - Wikipedia

    en.wikipedia.org/wiki/Apparent_magnitude

    Andromeda Galaxy: seen from Earth M31 [49] +4 Orion Nebula: seen from Earth M42 +4.38: moon Ganymede: seen from Earth maximum brightness [50] (moon of Jupiter and the largest moon in the Solar System) +4.50: open cluster M41: seen from Earth an open cluster that may have been seen by Aristotle [51] +4.5 Sagittarius Dwarf Spheroidal Galaxy: seen ...

  3. Andromeda Galaxy - Wikipedia

    en.wikipedia.org/wiki/Andromeda_Galaxy

    The Andromeda Galaxy is a barred spiral galaxy and is the nearest major galaxy to the Milky Way. It was originally named the Andromeda Nebula and is cataloged as Messier 31 , M31 , and NGC 224 . Andromeda has a D 25 isophotal diameter of about 46.56 kiloparsecs (152,000 light-years ) [ 8 ] and is approximately 765 kpc (2.5 million light-years ...

  4. Astrophysical X-ray source - Wikipedia

    en.wikipedia.org/wiki/Astrophysical_X-ray_source

    X-rays start at ~0.008 nm and extend across the electromagnetic spectrum to ~8 nm, over which Earth's atmosphere is opaque. Astrophysical X-ray sources are astronomical objects with physical properties which result in the emission of X-rays . Several types of astrophysical objects emit X-rays. They include galaxy clusters, black holes in active ...

  5. Hubble reveals Andromeda has made contact with our galaxy - AOL

    www.aol.com/news/hubble-reveals-andromeda-made...

    A magnificent cloud of diffuse halo of plasma surrounding our galactic neighbor, Andromeda, was recently mapped by astronomers using the Hubble Space Telescope. This close proximity means that ...

  6. Hubble Ultra-Deep Field - Wikipedia

    en.wikipedia.org/wiki/Hubble_Ultra-Deep_Field

    The Hubble Ultra-Deep Field ( HUDF) is a deep-field image of a small region of space in the constellation Fornax, containing an estimated 10,000 galaxies. The original data for the image was collected by the Hubble Space Telescope from September 2003 to January 2004 and the first version of the image was released on March 9, 2004. [ 1 ]

  7. Astrophotography - Wikipedia

    en.wikipedia.org/wiki/Astrophotography

    Astrophotography is a popular hobby among photographers and amateur astronomers. Techniques ranges from basic film and digital cameras on tripods up to methods and equipment geared toward advanced imaging. Amateur astronomers and amateur telescope makersalso use homemade equipment and modified devices. Media.

  8. Andromeda–Milky Way collision - Wikipedia

    en.wikipedia.org/wiki/Andromeda–Milky_Way...

    The Andromeda–Milky Way collision is a galactic collision predicted to occur in about 4.5 billion years between the two largest galaxies in the Local Group—the Milky Way (which contains the Solar System and Earth) and the Andromeda Galaxy.

  9. List of Andromeda's satellite galaxies - Wikipedia

    en.wikipedia.org/wiki/List_of_Andromeda's...

    The Andromeda Galaxy (M31) has satellite galaxies just like the Milky Way. Orbiting M31 are at least 13 dwarf galaxies: the brightest and largest is M110, which can be seen with a basic telescope. The second-brightest and closest one to M31 is M32. The other galaxies are fainter, and were mostly discovered starting from the 1970s.