21 June
On 21 or 22 June every year, the 'solstice' occurs.For those who live in the northern hemisphere of Earth, on 21/22 June every year is the summer solstice, the year’s ...
27 FEB. 2004
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1999: On 22 June 1999, a European team of scientists unveiled a discovery about our Sun - they had found a way of studying the hidden far side, allowing them to predict the imminent appearance of solar storms originating out of view behind the Sun.
The joint ESA/NASA SOHO mission, using an instrument called SWAN, showed how projections of sunspots on the far side of the Sun rotate through the sky in time with the Sun's own rotation. These sunspots ultimately emerge on the eastern (left-hand) side of its visible surface. This discovery proved useful in predicting solar storms.
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20 June
1976: On 20 June 1976, NASA's Viking 1 probe, launched from Cape Canaveral, went into Mars orbit. The lander set down on the western slopes of Chryse Planitia a month ...
19 June
2003: On 19 June 2003, the high-gain antenna (HGA) on ESA's SOHO spacecraft suffered a malfunction in its pointing mechanism - a stuck motor drive would not permit the antenna ...
18 June
1926: On 18 June 1926, Allan Rex Sandage was born.Sandage was an American astronomer who, together with Thomas A. Matthews, saw the first visible 'quasi-stellar radio source' (quasar).A quasar is ...
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