Why yes, it’s proof of time travel, or not

Here’s a conundrum for you. Back in 1860, Austrian artist Ferdinand Georg Waldmüller (1793-1865) worked up this little scene.  A woman, walking along in a pose very familiar to us today, is about to be confronted by a suitor bearing a flower. The painting was titled ‘Die Erwartete’ (‘The Expected’). So was Herr Waldmüller a … More Why yes, it’s proof of time travel, or not

What five super-powers would you most like to have?

Every so often I see something on Facebook asking you to name which super-powers you’d most like to have.That’s actually pretty cool, because – you know, super-powers. We all know what these are – invulnerability, invincible strength, teleportation, telekinesis, flying, being magnetic, telepathy, X-ray vision, squirting spider-web from your wrist and doing Tarzan swings with … More What five super-powers would you most like to have?

New Horizons and Ultima Thule – the bonus mission

On 1 January 2019 the New Horizons probe – the one that whipped past Pluto in 2015 – will encounter another outer solar-system body: 2014 MU69. Informally it’s become known as Ultima Thule. The neat part is that this body wasn’t even known when New Horizons was launched in January 2006. Back then, the probe … More New Horizons and Ultima Thule – the bonus mission

How GPS finds you and lets Google send you adverts

If both Special and General Relativity didn’t work precisely as Einstein said it did, GPS would be far less accurate than it actually is. Like, way off, meaning those auto-drive cars wouldn’t even get to the right road. Or any road. And we’d all be lost. Let me explain. GPS works by very precise distance … More How GPS finds you and lets Google send you adverts