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  2. ʻOumuamua - Wikipedia

    en.wikipedia.org/wiki/ʻOumuamua

    When it was first observed, it was about 33 million km (21 million mi; 0.22 AU) from Earth (about 85 times as far away as the Moon) and already heading away from the Sun. ʻOumuamua is a small object estimated to be between 100 and 1,000 metres (300 and 3,000 ft) long, with its width and thickness both estimated between 35 and 167 metres (115 ...

  3. Outer space - Wikipedia

    en.wikipedia.org/wiki/Outer_space

    Outer space. Being essentially empty, outer space allows the earliest (redder) galaxies to be viewed without obstruction, as in the Webb's First Deep Field image. Outer space (or simply space) is the expanse that exists beyond Earth's atmosphere and between celestial bodies. [1] It contains ultra-low levels of particle densities, constituting a ...

  4. Heliosphere - Wikipedia

    en.wikipedia.org/wiki/Heliosphere

    The heliopause is the final known boundary between the heliosphere and the interstellar space that is filled with material, especially plasma, not from the Earth's own star, the Sun, but from other stars. [46] Even so, just outside the heliosphere (i.e. the "solar bubble") there is a transitional region, as detected by Voyager 1. [47]

  5. Interstellar probe - Wikipedia

    en.wikipedia.org/wiki/Interstellar_probe

    Model of the design for Interstellar Probe; antennas travel far beyond bounds of picture. Interstellar Probe (spacecraft) (ISP) (2018–) A NASA funded study, led by the Applied Physics Laboratory, on possible options for an interstellar probe. The nominal concept would launch on a SLS in the 2030s. It would perform either a fast Jupiter flyby ...

  6. New Horizons - Wikipedia

    en.wikipedia.org/wiki/New_Horizons

    New Horizons is an interplanetary space probe launched as a part of NASA 's New Frontiers program. [5] Engineered by the Johns Hopkins University Applied Physics Laboratory (APL) and the Southwest Research Institute (SwRI), with a team led by Alan Stern, [6] the spacecraft was launched in 2006 with the primary mission to perform a flyby study ...

  7. TON 618 - Wikipedia

    en.wikipedia.org/wiki/TON_618

    As a quasar, TON 618 is believed to be the active galactic nucleus at the center of a galaxy, the engine of which is a supermassive black hole feeding on intensely hot gas and matter in an accretion disc. Given its observed redshift of 2.219, the light travel time of TON 618 is estimated to be approximately 10.8 billion years.

  8. Kármán line - Wikipedia

    en.wikipedia.org/wiki/Kármán_line

    The Kármán line (or von Kármán line / vɒn ˈkɑːrmɑːn /) [2] is a conventional definition of the edge of space. It is not universally accepted. The international record-keeping body FAI (Fédération aéronautique internationale) defines the Kármán line at an altitude of 100 kilometres (54 nautical miles; 62 miles; 330,000 feet) above ...

  9. Interstellar travel - Wikipedia

    en.wikipedia.org/wiki/Interstellar_travel

    Interstellar travel is the hypothetical travel of spacecraft between star systems. Due to the vast distances between the Solar System and nearby stars, interstellar travel is not possible with current propulsion technologies. To reach stars within reasonable amount of time (decades or centuries), an interstellar spacecraft must reach a ...