Posted in Astronomy at 19:40 on 13 March 2017
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Posted in Astronomy at 15:00 on 2 February 2017
This is stunning. From Astronomy Picture of the Day, 1/2/2107.
A time-lapse video, taken over seven years, of Four Planets Orbiting Star HR 8799. (The system’s central star itself has been occluded to allow the planets to be seen.)
Posted in Astronomy at 19:35 on 25 January 2017
Saturn’s tiny moon Daphnis amid the wave striations and ring gap caused by its presence.
Posted in Astronomy at 20:00 on 20 December 2016
Posted in Astronomy at 20:00 on 11 June 2016
A stunning picture taken by the New Horizons probe of a backlit Pluto showing its hazy but stratified atmosphere appeared on Astronomy Picture of the Day on 9/6/16.
Posted in Astronomy at 12:00 on 26 April 2016
Posted in Astronomy at 20:00 on 23 February 2016
Yet more fruit from NASA’s New Horizon spacecraft’s visit to Pluto.
An astounding video of Pluto’s moon Charon.
From Astronomy Picture of the Day via You Tube:-
I first heard of such waves while I was still at University back in the long ago when a Physics Prof at Glasgow University came along to the Alchemists’ Club (as the post-grad Chemists association was called) to tell us all about his research, so it’s been a long time coming.
The discovery is a major confirmation of Einstein’s general theory of relativity certainly but can it really be the opening of a new window onto the universe akin to Galileo’s pointing of a telescope at Jupiter as the TV news had it? Given that the signals are so hard to detect as a result of the disturbances to matter being so small surely the technique cannot become as routine as results from electromagnetic instruments are?
Here’s a Periodic Table with a difference.
Yes, it lists the elements in the usual way but the information within the boxes is distinctive. It tells where the atoms of each element first came into being whether it was in the big bang – for hydrogen and hydrogen alone – or, for most elements, in stars of varying types, or else by human activity.
Edit:- I’ve just noticed the table has helium also being produced by the big bang. I’m sure it’s made by fusion in stars, though.
Posted in Astronomy at 18:00 on 13 December 2015
Ceres, the largest of the Solar System’s asteroids, has around 150 mysteriously bright spots which are now thought to be composed of a form of hydrated magnesium sulphate.
From Astronomy Picture of the Day 11/12/15 this is the brightest of them:-