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  2. Exploration of the Moon - Wikipedia

    en.wikipedia.org/wiki/Exploration_of_the_Moon

    The far side of the Moon was first photographed on October 7, 1959, by the Soviet probe Luna 3. Though vague by today's standards, the photos showed that the far side of the Moon almost completely lacked maria. The first American probe to fly by the Moon was Pioneer 4 on March 4, 1959, which occurred shortly after Luna 1. It was the only ...

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

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

    3rd Planet: Earth is the third planet from the Sun and the subject of historical misconception for centuries. [4] [5] Earth was never formally 'discovered' because it was never an unrecognized entity by humans. However, its shared identity with other bodies as a "planet" is a historically recent discovery.

  4. Moon - Wikipedia

    en.wikipedia.org/wiki/Moon

    The Moon is Earth's only natural satellite, orbiting at an average distance of 384 399 km (238,854 mi; 30 Earths across).It faces Earth always with the same side.This is a result of Earth's gravitational pull having synchronized the Moon's rotation period with its orbital period (lunar month) of 29.5 Earth days.

  5. Two Grand Canyon-size valleys on the far side of the moon ...

    www.aol.com/two-grand-canyon-size-valleys...

    Two Grand Canyon-size features on the far side of the moon were likely formed in about 10 minutes after an unknown object slammed into the moon 3.8 billion years ago.

  6. Discovery and exploration of the Solar System - Wikipedia

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

    Its orbit revealed that it was a new planet, Uranus, the first ever discovered telescopically. [20] Giuseppe Piazzi discovered Ceres in 1801, a small world between Mars and Jupiter. It was considered another planet, but after subsequent discoveries of other small worlds in the same region, it and the others were eventually reclassified as ...

  7. Scientists find ‘tunnel’ on the Moon - AOL

    www.aol.com/scientists-tunnel-moon-152143827.html

    Surface temperatures on the Moon can reach 127 degrees Celsius when it is hit by the Sun, and can drop to -173 degrees away from the Sun. Cosmic and solar radiation can be 150 times more powerful ...

  8. Timeline of the far future - Wikipedia

    en.wikipedia.org/wiki/Timeline_of_the_far_future

    Tidal acceleration moves the Moon far enough from the Earth to the point where it can no longer stabilize Earth's axial tilt. As a consequence, Earth's true polar wander becomes chaotic and extreme, leading to dramatic shifts in the planet's climate due to the changing axial tilt. [96] 1.6 billion

  9. Timeline of Solar System astronomy - Wikipedia

    en.wikipedia.org/wiki/Timeline_of_Solar_System...

    1846 – Johann Galle discovers the eighth planet, Neptune, following the predicted position gave to him by Le Verrier. [137] 1846 – William Lassell discovers Neptune's moon Triton, just seventeen days later of planet's discovery. [140] 1848 – Lassell, William Cranch Bond and George Phillips Bond discover Saturn's moon Hyperion. [141] [142]