Duncan Lunan who writes The Orkney News astronomy column and beginner’s guides is also the man behind the building of the Sighthill Stone Circle.
Like last month, it will never be completely dark during July, as the Sun never gets far below the horizon. It’s a good time to see noctilucent (night-glowing) clouds in the north, lit by sunlight at high altitudes, first reported in the 19th century and still not fully explained.
“If the Earth had no atmosphere, life would be much easier for astronomers – as long as they didn’t need to breathe. “
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.
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
On 25th of April 1990 the Hubble space telescope was placed into orbit by the space shuttle Discovery.
In anticipation of the Chang’e 5 returned sample analysis, Duncan Lunan reviews what we have learned to date.
Part 5 of Duncan Lunan’s Guide looks at The Moon
The lake-bed sediments of Gale Crater on Mars from NASA’s Curiosity rover (credit: NASA/JPL, California Institute of Technology)
“The most obvious way to tell someone else where to look for something in the sky, would be to give its height above the horizon and bearing left or right from some landmark. “