The search for Planet X

The search for Planet X

Above: Now classed as a dwarf planet, Pluto was discovered in February 1930 by Clyde Tombaugh. Image credit: NASA/JHU APL/SwRI/A. Parker. By David Ellyard AT A TIME WHEN WE ARE FINDING PLANETS by the hundred orbiting stars other than our own, it is worth recalling the...
Aurora australis stuns from the Space Station

Aurora australis stuns from the Space Station

THESE IMAGES of the aurora australis or ‘southern lights’ were taken by astronauts aboard the International Space Station, orbiting at an altitude of 438 kilometres above ground level. The aurora australis (and its Northern Hemisphere sibling, the aurora borealis) is...
Here’s what’s in our Sep/Oct issue

Here’s what’s in our Sep/Oct issue

HERE’S WHAT YOU’LL FIND in the Sep/Oct 2021 issue of Australian Sky & Telescope magazine — out now. Pick up a copy at your local newsagent, or grab the digital issue. You can also save some money by subscribing to the print or digital editions. Features: Mystery...