I was amused to read on the BBC News site  ‘ Get ready for a cosmic surprise this autumn - Earth is about to get a second moon, according to scientists.’ I named my first science quiz book How Many Moons does the Earth Have? precisely because of this kind of silliness. My answer was ‘one’ and it still will be while a chunk of passing rock is briefly caught by Earth’s gravitational pull. Apart from anything, the suggestion that something is a moon just because it is briefly pulled off track by a planet’s gravity seems to reflect an underlying misunderstanding of how gravity works. Everything with mass distorts spacetime and causes moving objects to be displaced from their natural straight line path. This would make practically everything in space a moon if you took this argument to its limit, because they are all being pulled of track by the planets. The news item is also amusing because back in 2013, the TV show QI claimed that the Earth had a large number of moons (it was QI’s variou

REVISIT SERIES -  An edited post from September 2009 The white goods company Electrolux has been running a lab design competition to come up with designs for domestic appliances for 2099 (apparently, in 2009 Electrolux was 90 years old). There were eight finalists who came up with various unlikely possibilities, of which the most fruit-cakey are the two I have included here. I'm all in favour of designers being given a bit of free rein with creativity if they then refine to reality, but there seems to be a problem with the criteria used to select these designs. Two essentials are missing. Scientific practicality - would this be feasible in 90 years time? - and practical relevance. An obvious question to ask, surely, is who would want a domestic appliance that does this? Each of these 'novel' ideas falls down at one of these hurdles. The first, shown at the top of the page, is a teleporting fridge. According to designer Dulyawat Wongnawa:  Technologies seem to be progressing

While some from the arts or educated in the humanities proclaim a profound disinterest in science, most scientists have an interest in the arts. However, sometimes scientists go too far in trying to appear art-friendly or to make arty types feel loved. One of the most egregious examples of this recently has been the attempt to claim that Vincent van Gogh had a deep and intuitive understanding of fluid dynamics. Last Wednesday's Times newspaper dedicated more than half a page to this bizarre suggestion. According to article-writer Rhys Blakely, a study of one of van Gogh's most famous paintings, The Starry Night 'suggests he also had an uncanny grasp of some of the most elusive laws of physics.' No he didn't. The idea from this study , lead author Dr Yongxiang Huang of the Hong Kong University of Science and Technology is that the swirly bits in van Gogh's painting are 'not randomly placed' but rather 'follow patterns that appear at just the right di

Some of my favourite pieces of music are variations (or variants) on a theme. Unlike a pop cover version, these aren’t just a different arrangement of the same song, but rather the composer takes a snippet of music, often by someone else and go off in all sorts of directions. My personal favourite is the Ralph Vaughan Williams piece Fantasia on a Theme by Thomas Tallis (it’s a fantasia because it’s a looser continuous form referencing the original, rather than a set of separate variations, but in essence it's the same kind of thing). The original is a rather staid (though beautiful) hymn tune, but Vaughan Williams takes it to amazing new heights. I was therefore rather disappointed listening to composer Debbie Wiseman talking about her Paralympic homecoming piece I 'm Walking with You (played beautifully by a blind pianist called Lucy - I don't think she's called 'Lucy the pianist' as the image seems to suggest, I think she featured in a TV show called The Piani

REVISIT SERIES -  A post from September 2012 It can be highly entertaining when a drama series attempts to incorporate science into the plot, so last night I watched  Midsomer Murders , and the entertainment came thick and fast. In this particular case, the science in question was astronomy. We started with a dramatic scene. A total eclipse of the Sun. Many folk from kids to serious astronomers are gathering to a witness it. I was a little unhappy with the advice an expert gave a youngster (roughly 'don't look at it through binoculars or a telescope...' so far so good... 'unless you use one of these filters.' Not so good.) But we'll overlook that. What, though, about the eclipse itself? These don't happen randomly, after all. From the car registrations this clearly wasn't the last eclipse visible in the UK in 1999. Anyway, while the location of Midsomer isn't specified (it's filmed in Buckinghamshire and Berkshire), it clearly isn't Cornwall.

Ever since the release of her stunning The Appeal , Janice Hallett has amazed with her ability to tell a mystery story through the medium of a collection of documents - The Examiner maintains that remarkable quality . Here the main vehicle is a university intranet’s chat groups, though we do also get some emails and WhatsApp threads. The setting is a new MA course in multimedia arts, where the six students are very diverse. We are told right up front that there is a suspicion that one of the participants has died. Once again, Hallett enables us to get a wonderful picture of the personalities of the course members and their tutor - and it rapidly becomes clear that something odd is going on. The delight is in working out exactly what has happened and why. Along the way there are several big twists as different evidence emerges. One of these is brilliant - only achievable through this kind of storytelling. And while the underlying plot is in places quite dark, Hallett continues to be ab

REVISIT SERIES -  A post from September 2014 One of the interesting aftermaths of the Scottish Referendum debate was that I have seen a number of people saying 'A lesson to learn is don't trust the traditional media, get your information from social media.' I know where they were coming from, but there are two dangers here - one is that (even more than watching, say, Fox News) you won't get information you will get propaganda, and the other is that even when you aren't being told what you want to hear by your friends and political allies, a lot of internet sources are unreliable. The Tyson story I want to tell you illustrates this doubly. The Tyson in question is not Mike, but science populariser and astronomer, Neil deGrasse Tyson. I was surprised the other day to hear that Tyson was being pilloried for making up quotes to support an argument. The argument in question is that a lot of people (including many in the media and our elected representatives) are extremel