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  2. Alpha Centauri - Wikipedia

    en.wikipedia.org/wiki/Alpha_Centauri

    The distance of Alpha Centauri from the Earth is now reckoned at 4.396 light-years or 4.159 × 10 13 km.) α Centauri A (left) is of the same stellar type G2 as the Sun, while α Centauri B (right) is a K1-type star.

  3. Interstellar travel - Wikipedia

    en.wikipedia.org/wiki/Interstellar_travel

    On this scale, the distance to Alpha Centauri A would be 276 kilometers (171 miles). The fastest outward-bound spacecraft yet sent, Voyager 1, has covered 1/390 of a light-year in 46 years and is currently moving at 1/17,600 the speed of light. At this rate, a journey to Proxima Centauri would take 75,000 years. [2] [1]

  4. List of nearest stars - Wikipedia

    en.wikipedia.org/wiki/List_of_nearest_stars

    The closest system is Alpha Centauri, with Proxima Centauri as the closest star in that system, at 4.2465 light-years from Earth. The brightest, most massive and most luminous object among those 131 is Sirius A , which is also the brightest star in Earth's night sky ; its white dwarf companion Sirius B is the hottest object among them.

  5. List of nearest stars by spectral type - Wikipedia

    en.wikipedia.org/wiki/List_of_nearest_stars_by...

    The Alpha Centauri star system is the closest star system to the Sun. ... Distance Spectral type ... This is a list of O-type stars within 1,500 light years. Name

  6. Apparent magnitude - Wikipedia

    en.wikipedia.org/wiki/Apparent_magnitude

    the brightest stellar event in recorded history (7200 light-years away) [38] −6.80: Alpha Centauri A: seen from Proxima Centauri b [39] −6.00: The total integrated magnitude of the night sky (incl. airglow) seen from Earth measuring about 0.002 lux −6.00: Crab Supernova of 1054: seen from Earth (6500 light-years away) [40] −5.90 ...

  7. Proxima Centauri - Wikipedia

    en.wikipedia.org/wiki/Proxima_Centauri

    Proxima Centauri is a member of the Alpha Centauri star system, being identified as component Alpha Centauri C, and is 2.18° to the southwest of the Alpha Centauri AB pair. It is currently 12,950 AU (0.2 ly ) from AB, which it orbits with a period of about 550,000 years.

  8. List of Solar System objects by greatest aphelion - Wikipedia

    en.wikipedia.org/wiki/List_of_Solar_System...

    The nearest known star is Proxima Centauri at 269,000 AU (4.25 ly), [4] followed by Alpha Centauri at about 4.35 light years. [4] Oort cloud comets orbit the Sun at great distances, but can then be perturbed by passing stars and the galactic tides. [5]

  9. List of nearest bright stars - Wikipedia

    en.wikipedia.org/wiki/List_of_nearest_bright_stars

    Prominent stars in the neighborhood of the Sun (center) This list of nearest bright stars is a table of stars found within 15 parsecs (48.9 light-years) of the nearest star, the Sun, that have an absolute magnitude of +8.5 or brighter, which is approximately comparable to a listing of stars more luminous than a red dwarf.