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  2. Timeline of discovery of Solar System planets and their moons

    en.wikipedia.org/wiki/Timeline_of_discovery_of...

    The timeline of discovery of Solar System planets and their natural satellites charts the progress of the discovery of new bodies over history. Each object is listed in chronological order of its discovery (multiple dates occur when the moments of imaging, observation, and publication differ), identified through its various designations (including temporary and permanent schemes), and the ...

  3. List of multiplanetary systems - Wikipedia

    en.wikipedia.org/wiki/List_of_multiplanetary_systems

    Planet Taphao Thong was discovered in 1996 and was one of the first exoplanets to be discovered. [48] The planet was the first long-period extrasolar planet discovered. The other planets were discovered later. [49] Nu 2 Lupi: Lupus: 15 h 21 m 49.57 s: −48° 19′ 01.1″ 5.65: 47: G2V: 0.906: 5664: 10.36: 3: One of the oldest stars in the ...

  4. Discovery and exploration of the Solar System - Wikipedia

    en.wikipedia.org/wiki/Discovery_and_exploration...

    For millennia, what today is known to be the Solar System was regarded as the "whole universe", so the knowledge of both mostly advanced in parallel. A clear distinction was not made until around the mid-17th century. Since then, incremental knowledge has been gained not only about the Solar System, but also about outer space and its deep-sky ...

  5. Timeline of space exploration - Wikipedia

    en.wikipedia.org/wiki/Timeline_of_space_exploration

    First spacecraft beyond the Inner Solar System. USA (NASA) Pioneer 10 [30] January 1974 First spacecraft to return data on a long-period comet. USA (NASA) Mariner 10 [31] 5 February 1974: First mission to explore two planets in a single mission (Mercury and Venus). First photograph of Venus from space. First use of solar wind for spacecraft ...

  6. Discoveries of exoplanets - Wikipedia

    en.wikipedia.org/wiki/Discoveries_of_exoplanets

    HD 69830: Has a planetary system with three Neptune-mass planets. It is the first triple planetary system without any Jupiter-like planets discovered around a Sun-like star. All three planets were announced on May 18 by Lovis. All three orbit within 1 AU. The planets b, c and d have masses of 10, 12 and 18 times that of Earth, respectively.

  7. Rare ‘Trojan’ world may share the same orbit as another planet

    www.aol.com/news/rare-trojan-world-may-share...

    Astronomers spotted a possible “sibling” planet that shares the orbit of another exoplanet in a system located 370 light-years away.

  8. List of exoplanet firsts - Wikipedia

    en.wikipedia.org/wiki/List_of_exoplanet_firsts

    First pulsar planetary system. First planet discovered in a circumbinary orbit PSR B1620-26 b: PSR B1620-26: 1993 Orbits a pulsar and a white dwarf. Discovery confirmed in 2003. First planet discovered in globular cluster PSR B1620-26 b: PSR B1620-26: 1993 Located in Messier 4. First planet discovered in a multiple main-sequence star system 55 ...

  9. Scientists say they have found evidence of an unknown planet ...

    www.aol.com/scientists-found-evidence-unknown...

    Scientists say they have found new evidence that there is a hidden planet in our solar system. For years, some astronomers have been suggesting that unusual behaviour on the edge of our solar ...