Duncan Lunan continues his fascinating series with part two on the Moons of Saturn
“We have finally begun to seek an explanation as to why these ice shelves started retreating and coming into these configurations that became unstable decades before hydrofracturing could act on them,” Eric Rignot
an example of one of the largest, nearly complete Einstein rings ever seen – a deep-space optical phenomenon.
On 12th of September 1959 the USSR (Union of Soviet Socialist Republics), launched Luna 2. It was to be the first spacecraft to impact on the moon.
“The four large Jupiter moons, discovered by Galileo and called the Galilean satellites in his memory, are Io, Europa, Ganymede and Callisto, in order out from the planet.”
Jupiter is much further from the Sun than Mars and is passed by the Earth every 13 months, so it’s brilliant in the night sky for much of every year.
In the last of his series on Mars, Duncan Lunan looks at the possibility of life on the planet
Europe’s Mars Express is still in orbit around the red planet, where it was joined by Mars Reconnaissance Orbiter
“The two moons of Mars were discovered in 1877 by Asaph Hall. The largest crater on Phobos, the inner moon, is named ‘Stickney’, the maiden name of Asaph Hall’s wife, who encouraged him to keep looking when he was ready to give up. “
“When Mariner 9 approached Mars in 1971, to become the first probe to orbit the planet, Mars was at its closest to the Sun and in the grip of a dust storm more severe than any we’ve seen since”