22 July
1994: On 22 July 1994, the last of the large fragments of Comet P/Shoemaker-Levy (fragment W) hit Jupiter.Starting on 16 July 1994, Comet P/Shoemaker-Levy's impact with Jupiter was the first ...
27 FEAB. 2004
Dáta foilsithe
1964
Amhairc
On 23 July every year, the Perseid meteor shower begins.
The shower begins when Earth enters the edge of a cloud of debris from Comet Swift-Tuttle. Dust-sized particles hit the atmosphere and appear to streak across the night sky.
The Perseids are visible between 23 July and 22 August but, by 12 August, at the peak of the shower, skywatchers can expect to see possibly 80-100 meteors per hour if skies are clear.
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21 July
1620: On 21 July 1620, Jean Picard was born.Picard is regarded as the founder of modern astronomy in France. He introduced new methods, improved the old instruments and added new ...
20 July
1969: On 20 July 1969, US astronaut Neil A. Armstrong became the first human to set foot on the Moon.As Commander of the Apollo 11 mission, he stepped from the ...
19 July
1846: On 19 July 1846, Edward Pickering was born.Pickering was an American physicist and astronomer. He directed the Harvard College Observatory for forty-two years. He and his staff made visual ...
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