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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. Discovery and exploration of the Solar System - Wikipedia

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

    Italian polymath Galileo Galilei was an early user and made prolific discoveries, including the phases of Venus, which definitively disproved the arrangement of spheres in the Ptolemaic system. Galileo also discovered that the Moon was cratered, that the Sun was marked with sunspots, and that Jupiter had four satellites in orbit around it. [13]

  4. Timeline of Solar System astronomy - Wikipedia

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

    2019 – 2I/Borisov, the first interstellar comet and second interstellar object, is discovered. [250] 2022 – The Double Asteroid Redirection Test (DART) spacecraft mission intentionally crashed into Dimorphos, the minor-planet moon of the asteroid Didymos, deviating (slightly) the orbit of a Solar System body for the first time ever. [251]

  5. Kepler-452b - Wikipedia

    en.wikipedia.org/wiki/Kepler-452b

    Kepler-452b (sometimes quoted to be an Earth 2.0 or Earth's Cousin [4] [5] based on its characteristics; also known by its Kepler object of interest designation KOI-7016.01) is a candidate [6] [7] super-Earth exoplanet orbiting within the inner edge of the habitable zone of the sun-like star Kepler-452 and is the only planet in the system discovered by the Kepler space telescope.

  6. Timeline of astronomy - Wikipedia

    en.wikipedia.org/wiki/Timeline_of_astronomy

    Cecilia Payne-Gaposchkin discovers that hydrogen is the most abundant element in the Sun's atmosphere, and accordingly, the most abundant element in the universe by relating the spectral classes of stars to their actual temperatures and by applying the ionization theory developed by Indian physicist Meghnad Saha. This opens the path for the ...

  7. Johannes Kepler - Wikipedia

    en.wikipedia.org/wiki/Johannes_Kepler

    Much of Kepler's enthusiasm for the Copernican system stemmed from his theological convictions about the connection between the physical and the spiritual; the universe itself was an image of God, with the Sun corresponding to the Father, the stellar sphere to the Son, and the intervening space between them to the Holy Spirit.

  8. Whoa, Scientists Found the Universe's Invisible Galaxy - AOL

    www.aol.com/lifestyle/whoa-scientists-found...

    Scientists say they've discovered a new galaxy that's so dark and compact, it's basically invisible. But it's actually been here the whole time. Whoa, Scientists Found the Universe's Invisible Galaxy

  9. History of astronomy - Wikipedia

    en.wikipedia.org/wiki/History_of_astronomy

    The Sun was found to be part of a galaxy made up of more than 10 10 stars (10 billion stars). The existence of other galaxies, one of the matters of the great debate , was settled by Edwin Hubble , who identified the Andromeda nebula as a different galaxy, and many others at large distances and receding, moving away from our galaxy.