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  2. List of hypothetical Solar System objects - Wikipedia

    en.wikipedia.org/wiki/List_of_hypothetical_Solar...

    Planets. Counter-Earth, a planet situated on the other side of the Sun from that of the Earth. Fifth planet (hypothetical), historical speculation about a planet between the orbits of Mars and Jupiter. Phaeton, a planet situated between the orbits of Mars and Jupiter whose destruction supposedly led to the formation of the asteroid belt.

  3. List of former planets - Wikipedia

    en.wikipedia.org/wiki/List_of_former_planets

    Former planets of the Solar System Former planet Discovery Removal Current status Notes The Morning Star [NB 1]: Antiquity: Antiquity: Aspects of Venus "Phosphorus", the Morning Star of Greek antiquity (Eosphorus, the Dawn-Bringer; called "Lucifer" by the Romans), and "Hesperus", the Evening Star (called "Vesper" by the Romans), were later identified as a single planet, Venus (Aphrodite).

  4. List of galaxies - Wikipedia

    en.wikipedia.org/wiki/List_of_galaxies

    This is a radio galaxy. This was the remotest object known at time of discovery of its redshift. This was the last non-quasar to hold the title of most distant object known until 1997. In 1964, quasar 3C 147 became the most distant object in the universe known. [74] [81] [95] [96] [97] LEDA 25177 (MCG+01-23-008) 1951–1960: z=0.2 (V=61000 km/s)

  5. Black dwarf - Wikipedia

    en.wikipedia.org/wiki/Black_dwarf

    A black dwarf is a theoretical stellar remnant, specifically a white dwarf that has cooled sufficiently to no longer emit significant heat or light. Because the time required for a white dwarf to reach this state is calculated to be longer than the current age of the universe (13.8 billion years), no black dwarfs are expected to exist in the ...

  6. List of astronauts by name - Wikipedia

    en.wikipedia.org/wiki/List_of_astronauts_by_name

    Vladimir Aksyonov — Soyuz 22, Soyuz T-2. Buzz Aldrin — Gemini 12, Apollo 11. Second person to walk on the Moon. Aleksandar Panayotov Aleksandrov — Soyuz TM-5. Aleksandr Pavlovich Aleksandrov — Soyuz T-9, Soyuz TM-3. Ali AlQarni — Axiom Mission 2. Andrew M. Allen — STS-46, STS-62, STS-75. Joseph P. Allen — STS-5, STS-51-A.

  7. Hubert Blaine Wolfeschlegelsteinhausenbergerdorff Sr.

    en.wikipedia.org/wiki/Hubert_Blaine_Wolfe...

    Hubert Blaine Wolfe­schlegel­stein­hausen­berger­dorff Sr. (a.k.a. Hubert Wolfstern, [3] Hubert B. Wolfe + 666 Sr., [4] Hubert Blaine Wolfe+585 Sr., [5] and Hubert Blaine Wolfe+590 Sr., [6] among others, 4 August 1914 – 24 October 1997) was a German-born American typesetter who held the record for the longest personal name ever used.

  8. Eternalism (philosophy of time) - Wikipedia

    en.wikipedia.org/wiki/Eternalism_(philosophy_of...

    According to eternalism, those four instants all equally exist. In the philosophy of space and time, eternalism[1] is an approach to the ontological nature of time, which takes the view that all existence in time is equally real, as opposed to presentism or the growing block universe theory of time, in which at least the future is not the same ...

  9. Exoplanet naming convention - Wikipedia

    en.wikipedia.org/wiki/Exoplanet_naming_convention

    The exoplanet naming convention is an extension of the system used for naming multiple-star systems as adopted by the International Astronomical Union (IAU). For exoplanets orbiting a single star, the name is normally formed by taking the name of its parent star and adding a lowercase letter.