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- Timeline of discovery of Solar System planets and their moons
^ At the time of Neptune's discovery, dwarf planet Ceres and asteroids Pallas, Juno, Vesta, and Astraea were counted as planets The discovery of Amalthea marks the first time the Roman numerals were not adjusted with the discovery of a new satellite; from then on they reflected order of discovery rather than distance from the parent planet
- Discovery and exploration of the Solar System - Wikipedia
Telescopic observations resulted in the discovery of moons and rings around planets, and new planets, comets and the asteroids; the recognition of planets as other worlds, of Earth as another planet, and stars as other suns; the identification of the Solar System as an entity in itself, and the determination of the distances to some nearby stars
- At 3 million years old, this newly discovered planet is one . . .
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
- List of former planets - Wikipedia
Throughout antiquity, several astronomical objects were considered Classical Planets, meaning "wandering stars", not all of which are now considered planets The moons discovered around Jupiter, Saturn and Uranus after the advent of the telescope were also initially considered planets by some The development of more powerful telescopes resulted in the discovery of the asteroids, which were
- Timeline of Solar System exploration - Wikipedia
Out of the Cradle – 1984 book about scientific speculation on future missions Space Race Timeline of artificial satellites and space probes Timeline of discovery of Solar System planets and their moons Timeline of first orbital launches by country Timeline of space exploration Timeline of space travel by nationality Timeline of spaceflight
- List of exoplanet firsts - Wikipedia
This is a list of exoplanet discoveries that were the first by several criteria, including: the detection method used, the planet type, the planetary system type, the star type, and others
- Timeline of Solar System astronomy - Wikipedia
These astronomical tables were used and updated during the following three centuries, as the main source of astronomical data, mainly to calculate ephemerides (which were in turn used by astrologers to cast horoscopes) [51] c 1300 – Jewish astronomer Levi ben Gershon (Gersonides) recognized that the stars are much larger than the planets
- Formation and evolution of the Solar System - Wikipedia
The ices that formed the Jovian planets were more abundant than the metals and silicates that formed the terrestrial planets, allowing the giant planets to grow massive enough to capture hydrogen and helium, the lightest and most abundant elements [12]
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