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  2. Light-year - Wikipedia

    en.wikipedia.org/wiki/Light-year

    The Andromeda Galaxy is approximately 2.5 million light-years away. 3 × 10 6 ly: The Triangulum Galaxy , at about 3 million light-years away, is the most distant object visible to the naked eye. 5.9 × 10 7 ly: The nearest large galaxy cluster, the Virgo Cluster, is about 59 million light-years away. 1.5 × 10 8 – 2.5 × 10 8 ly

  3. Observable universe - Wikipedia

    en.wikipedia.org/wiki/Observable_universe

    So if the matter that originally emitted the oldest CMBR photons has a present distance of 46 billion light-years, then the distance would have been only about 42 million light-years at the time of decoupling. The light-travel distance to the edge of the observable universe is the age of the universe times the speed of light, 13.8 billion light ...

  4. Light Years Away (G.E.M. song) - Wikipedia

    en.wikipedia.org/wiki/Light_Years_Away_(G.E.M._song)

    "Light Years Away" (Chinese: 光年之外; pinyin: Guāngnián zhī wài) is a song recorded by Hong Kong singer-songwriter G.E.M. released on 30 December 2016. [1] It is the Chinese theme song for the American sci-fi film Passengers. [1] The music video captures scenes from the film Passengers, and features G.E.M. singing in the Avalon. The ...

  5. List of nearest stars - Wikipedia

    en.wikipedia.org/wiki/List_of_nearest_stars

    This number is likely much higher, due to the sheer number of stars needed to be surveyed; a star approaching the Solar System 10 million years ago, moving at a typical Sun-relative 20–200 kilometers per second, would be 600–6,000 light-years from the Sun at present day, with millions of stars closer to the Sun.

  6. Nova explosion 3,000 light-years away will be seen from Earth ...

    www.aol.com/earth-soon-naked-eye-view-222113219.html

    T Coronae Borealis, also known as the "Blaze Star," is actually a pair of stars located 3,000 light-years away. The star system is a recurring nova, with Earth-visible explosions every 79 to 80 ...

  7. Twin paradox - Wikipedia

    en.wikipedia.org/wiki/Twin_paradox

    Consider a space ship traveling from Earth to the nearest star system: a distance d = 4 light years away, at a speed v = 0.8c (i.e., 80% of the speed of light). To make the numbers easy, the ship is assumed to attain full speed in a negligible time upon departure (even though it would actually take about 9 months accelerating at 1 g to get up ...

  8. A potentially habitable Earth-size planet was discovered just ...

    www.aol.com/news/potentially-habitable-earth...

    A potentially habitable exoplanet that is roughly similar in size to Earth has been found in a system located 40 light-years away, according to a new study.

  9. Parsec - Wikipedia

    en.wikipedia.org/wiki/Parsec

    The nearest star, Proxima Centauri, is about 1.3 parsecs (4.2 light-years) from the Sun: from that distance, the gap between the Earth and the Sun spans slightly less than one arcsecond. [2] Most stars visible to the naked eye are within a few hundred parsecs of the Sun, with the most distant at a few thousand parsecs, and the Andromeda Galaxy ...