“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”
“Mars has only half the diameter of the Earth, but because it has no oceans, its surface area is actually greater than the Earth’s land surface. “
Although it can be seen in daylight if you know exactly where to look, Venus is the morning and evening star, generally seen in twilight and hardly ever against a truly black sky.
Find out more about the planet Mercury from our guide by Duncan Lunan
This spectacular image from the NASA/ESA Hubble Space Telescope shows the trailing arms of NGC 2276, a spiral galaxy 120 million light-years away in the constellation of Cepheus
In anticipation of the Chang’e 5 returned sample analysis, Duncan Lunan reviews what we have learned to date.
On 25th of April 1990 the Hubble space telescope was placed into orbit by the space shuttle Discovery.
The lake-bed sediments of Gale Crater on Mars from NASA’s Curiosity rover (credit: NASA/JPL, California Institute of Technology)
More than a third of the Antarctic’s ice shelf area could be at risk of collapsing into the sea if global temperatures reach 4°C above pre-industrial levels, new research has shown.