“Is there life on Mars?” This must be one of the most-asked questions in astronomy. In this article I am going to look at the historical background to this question. Current thoughts on the possibilities of Martian life will be considered in a follow up article. Why is life Read more…
In 2003 astronomers discovered Eris, an object seemingly bigger than Pluto, in the frigid Trans-Neptunian wastes of the Solar System. Rather than becoming the Tenth Planet, Eris led directly to Pluto’s demotion from planetary status! But is this saga over? Martina Redpath has the details. I’m sure most of you Read more…
Ask anyone to draw a picture of a planet and I’ll bet they draw a ringed planet like Saturn. This giant world has always stood out from the other worlds of the Solar System thanks to its amazing rings, in astronomy books it was ‘The Ringed Planet’. Thirty years Read more…
In March 2010 that superb but underappreciated probe Mars Express made a series of very close passes by the Martian moon Phobos. On one occasion it came as close as 107 km to the tiny world’s surface. The purpose of these encounters was to determine information on Phobos’ interior Read more…
Venus was once thought to be a lush, life-bearing planet, but modern research has revealed an utterly lethal world. What perils await explorers of “Earth’s evil twin”? Is there anyone who hasn’t admired the lovely beacon of Venus hanging bright in a cerulean sky? (So bright in fact, it Read more…
Saturn: the Blue Planet? The NASA/ESA Hubble Space Telescope reveals the secrets of the giant planet. This false colour image from the Hubble Space Telescope not only shows Saturn in an unfamiliar light, but displays some of the giant planet’s features. The image was created in early 2009, when Saturn Read more…