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  2. Pluto - Wikipedia

    en.wikipedia.org/wiki/Pluto

    Pluto (bottom left) compared in size to the Earth and the Moon. Pluto's diameter is 2 376.6 ± 3.2 km [5] and its mass is (1.303 ± 0.003) × 10 22 kg, 17.7% that of the Moon (0.22% that of Earth). [125] Its surface area is 1.774 443 × 10 7 km 2, or just slightly bigger than Russia or Antarctica (particularly including the Antarctic sea ice ...

  3. Planets beyond Neptune - Wikipedia

    en.wikipedia.org/wiki/Planets_beyond_Neptune

    His calculations predicted a mean distance for Brahma of 38.95 AU and an orbital period of 242.28 Earth years (3:4 resonance with Neptune). When Pluto was discovered 19 years later, its mean distance of 39.48 AU and orbital period of 248 Earth years were close to Ketakar's prediction (Pluto in fact has a 2:3 resonance with Neptune). Ketakar ...

  4. Exploration of Pluto - Wikipedia

    en.wikipedia.org/wiki/Exploration_of_Pluto

    It would then have the option of using Charon's gravity to leave the Pluto system after all Pluto science objectives are completed and study new KBOs beyond Pluto. Stern envisaged the probe being launched in 2030, marking the 100th anniversary of Pluto's discovery, and spending 7–8 years traveling to the Pluto system.

  5. Astronomers have for decades tried to figure out how Pluto ...

    www.aol.com/news/did-pluto-large-moon-charon...

    Pluto likely acquired large moon Charon in a “kiss and capture” collision billions of years ago. It may have created a subsurface ocean on the icy dwarf planet.

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

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

    Galileo [9] [10] discovered the Galilean moons. These satellites were the first celestial objects that were confirmed to orbit an object other than the Sun or Earth. Galileo saw Io and Europa as a single point of light on 7 January 1610; they were seen as separate bodies the following night. [11] Callisto: Jupiter IV o: 8 January 1610 p: 13 ...

  7. New Horizons spacecraft captures first images of Pluto moons

    www.aol.com/article/2015/02/19/new-horizons...

    NASA launched the New Horizon spacecraft in 2006 to learn more about the icy dwarf planet Pluto. Here are some of the first photos from that mission, taken from between 125 and 115 million miles away.

  8. At 3 million years old, this newly discovered planet is one ...

    www.aol.com/3-million-years-old-newly-190348764.html

    A "baby" planet that astronomers recently observed some 430 light-years from Earth may be the youngest planet ever discovered. Forming an estimated 3 million years ago, the planet may seem old to us.

  9. Clyde Tombaugh - Wikipedia

    en.wikipedia.org/wiki/Clyde_Tombaugh

    He discovered Pluto in 1930, the first object to be discovered in what would later be identified as the Kuiper belt. At the time of discovery, Pluto was considered the ninth planet, but was reclassified as a dwarf planet in 2006. Tombaugh also discovered many asteroids, and called for the serious scientific research of unidentified flying objects.