26 July
2000: On 26 July 2000, Comet Linear C/1999 S4 began to break up on its closest approach to the Sun.On 28 July, Spain’s Instituto de Astrofisica de Canarias reported that ...
27 FEB. 2004
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2001: On 27 July 2001, the NASA/ESA Hubble Space Telescope made a panoramic portrait of a vast, sculpted landscape of gas and dust where thousands of stars are being born. This fertile star-forming region, called the 30 Doradus Nebula, has at its centre the most spectacular cluster of massive stars in our cosmic neighbourhood of about 25 galaxies.
This mosaic picture shows that ultraviolet radiation and high-speed material unleashed by the stars in the cluster, called R136 (the large blue blob left of centre), are weaving a tapestry of creation and destruction, triggering the collapse of looming gas and dust clouds and forming pillar-like structures that are incubators for nascent stars.
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25 July
2003: On 25 July 2003, astronomers using ESA’s X-ray observatory, XMM-Newton, announced that they had discovered a pair of X-ray tails, stretching 3 million million kilometres across the sky. They ...
24 July
1853: On 24 July 1853, Henri-Alexandre Deslandres was born.Deslandres was a French astrophysicist who invented a spectroheliograph to photograph the Sun in monochromatic light and made extensive studies of the ...
23 July
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 ...
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