Posted in Astronomy at 12:00 on 26 April 2016
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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:-
Posted in Astronomy at 19:00 on 15 November 2015
From The Daily Galaxy 10/11/15. Pluto has ice volcanoes. (Some sort of false colouring here obviously.)
These two are called Wright Mons and Piccard Mons:-
The ice may be a mixture of water ice, nitrogen, ammonia, or methane.
From Astronomy Picture of the Day 14/11/15 comes this photo of Wright Mons:-
Posted in Astronomy at 19:00 on 13 November 2015
I got this one from The Daily Galaxy of 12/11/15.
Mars’s moon, Phobos, is groovy.
The grooves, and the depression shown below, are apparently due to the moon being slowly torn apart by gravitational tidal forces.
Posted in Astronomy at 11:00 on 28 October 2015
Posted in Astronomy at 19:15 on 7 October 2015
From You Tube (via Astronomy Picture of the Day 6/10/15) this shows the (minor) planet and its moon orbiting their common centre of gravity before flying past and giving a view of Pluto -and its atmosphere – backlit by the sun.
Posted in Astronomy at 12:00 on 3 October 2015
Astronomy Picture of the Day yesterday had a stunning view of Pluto’s moon Charon as taken by the New Horizons probe. The moon looks oddly lop-sided, probably due to the shadowing on its side pointing away from the sun:-
That’s a big fissure running right across its middle.