Tag: Space

Tectonics on Venus

Polygonal blocks or ‘campuses’ on the lowland surface of Venus. Note the zones of ridges that roughly parallel ‘campus’ margins. Credit: Paul K. Byrne, North Carolina State University and Sean C. Solomon, Lamont-Doherty Earth Observatory

The Sky Above You – July 2021

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.