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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 ...
Timeline of discovery of Solar System planets and their moons; Timeline of Solar System exploration; Timeline of first images of Earth from space; List of former planets; List of hypothetical Solar System objects in astronomy; Historical models of the Solar System; History of astronomy; Timeline of cosmological theories; The number of currently ...
This is a timeline of Solar System exploration ordering events in the exploration of the Solar System by date of spacecraft launch. It includes: It includes: All spacecraft that have left Earth orbit for the purposes of Solar System exploration (or were launched with that intention but failed), including lunar probes .
First spacecraft beyond the Inner Solar System. USA (NASA) Pioneer 10 [29] January 1974 First spacecraft to return data on a long-period comet. USA (NASA) Mariner 10 [30] 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 ...
True-scale Solar System poster made by Emanuel Bowen in 1747. At that time, Uranus, Neptune, nor the asteroid belts had been discovered yet. Discovery and exploration of the Solar System is observation, visitation, and increase in knowledge and understanding of Earth's "cosmic neighborhood". [1]
This is a timeline of astronomy ... announces his discovery of a regular ... Mike Brown and his team discovered Eris a large body in the outer Solar System [25] ...
1814 — Joseph Fraunhofer systematically studies the dark lines in the solar spectrum; 1834 — Hermann Helmholtz proposes gravitational contraction as the energy source for the Sun; 1843 — Heinrich Schwabe announces his discovery of the sunspot cycle and estimates its period to be about a decade
The Solar System travels alone through the Milky Way in a circular orbit approximately 30,000 light years from the Galactic Center. Its speed is about 220 km/s. The period required for the Solar System to complete one revolution around the Galactic Center, the galactic year, is in the range of 220–250 million years. Since its formation, the ...