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  2. Timeline of Solar System astronomy - Wikipedia

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

    The principal change was to space leap years differently so as to make the average calendar year 365.2425 days long, more closely approximating the 365.2422-day 'tropical' or 'solar' year that is determined by the Earth's revolution around the Sun. The reform advanced the date by 10 days: Thursday 4 October 1582 was followed by Friday 15 ...

  3. Chronology of the universe - Wikipedia

    en.wikipedia.org/wiki/Chronology_of_the_universe

    The chronology of the universe describes the history and future of the universe according to Big Bang cosmology.. Research published in 2015 estimates the earliest stages of the universe's existence as taking place 13.8 billion years ago, with an uncertainty of around 21 million years at the 68% confidence level.

  4. Webb's First Deep Field - Wikipedia

    en.wikipedia.org/wiki/Webb's_First_Deep_Field

    The image shows the galaxy cluster SMACS 0723 as it appeared 4.6 billion years ago, [4] covering an area of sky with an angular size approximately equal to a grain of sand held at arm's length. [3] Many of the objects in the image have undergone notable redshift due to the expansion of space over the extreme distance traveled by the light ...

  5. Timeline of astronomy - Wikipedia

    en.wikipedia.org/wiki/Timeline_of_astronomy

    By applying new ideas from subatomic physics, Subrahmanyan Chandrasekhar predicts that the atoms in a white dwarf star of more than 1.44 solar masses will disintegrate, causing the star to collapse violently. In 1933, Walter Baade and Fritz Zwicky describe the neutron star that results from this collapse, causing a supernova explosion.

  6. Timeline of first images of Earth from space - Wikipedia

    en.wikipedia.org/wiki/Timeline_of_first_images...

    First full-disk pictures of the Earth, published in Review of Popular Astronomy July–August. [31] [20] August 23, 1966 Lunar Orbiter 1: First image of Earth from another astronomical object (the Moon) and first picture of both Earth and the Moon from space. [32] [33] [34] [7] [19] December 11, 1966 ATS-1

  7. Striking photos show stunning, once-in-a-lifetime comet ... - AOL

    www.aol.com/striking-photos-show-stunning-once...

    It last passed Earth 80,000 years ago. The comet C/2023 A3 Tsuchinshan–ATLAS is seen near the western horizon from Staten Island near the Delta town of Walnut Grove on Oct. 13, 2024.

  8. 30 Color Photos Photographers Took 100 Years Ago That Still ...

    www.aol.com/44-old-color-photos-showing...

    Image credits: Photoglob Zürich "The product name Kodachrome resurfaced in the 1930s with a three-color chromogenic process, a variant that we still use today," Osterman continues.

  9. “My Super Sweet 16” Premiered 20 Years Ago Today ... - AOL

    www.aol.com/lifestyle/super-sweet-16-premiered...

    Sophie Mitchell was the star of season 2, episode 1 of My Super Sweet 16.She hosted a Moulin Rouge-themed birthday party in West Palm Beach, Fla. for 100 guests, and fans will forever remember her ...