5 September
1977: On 5 September 1977, NASA launched Voyager 1 from Cape Canaveral on board a Titan-Centaur rocket. Between them, Voyager 1 and 2 explored all the giant planets of the ...
27 FEB. 2004
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2000: On 6 September 2000, the ESA spacecraft, Ulysses, returned to the Sun's south pole for the second time in its mission. The spacecraft passed 70° south, shortly before the Sun's 11 year activity cycle peaked.
Conditions were very different from those Ulysses encountered during its first south polar pass in 1994 when solar activity, which is related to the magnetic behaviour of the Sun, was very low. Then, the solar wind at high latitudes was fast, but steady. The 2000 polar pass gave scientists the opportunity to learn just how different the polar regions of the Sun are at solar maximum compared with minimum.
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4 September
2003: On 4 September 2003, astronomers released an image taken by the NASA/ESA Hubble Space Telescope's Advanced Camera for Surveys (ACS). Amid a backdrop of far-off galaxies, the dusty spiral, ...
3 September
1976: On 3 September 1976, the unmanned US spacecraft Viking II landed on Mars and took its first pictures of the surface.Its twin, Viking I, had been the first to ...
2 September
1908: On 2 September 1908, Nikolay Aleksandrovich Kozyrev was born.Kozyrev was a Russian astronomer who claimed to have discovered volcano-like activity on the Moon. His sightings of apparent gaseous emissions ...
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