The Universe is really, really big. And there is a lot out there. Whether you have an interest in astronomy or not, the very wonder of the Universe is, well, universal. From Interstellar’s black hole to the curious ‘Pillars Of Creation‘, there is no denying that space holds a certain beauty. And under that aesthetic, the very laws of physics not only explain the beauty, but add to it. So today, I am taking on you a whistle-stop tour through our Universe, showing you what I feel is the best of the best. So as Astrophysicist Neil deGrasse Tyson says; ‘Come with me.’
Number 1: Cassiopeia A
Cassiopeia A is what remains of a ‘supernova’ (an exploding star.) And its actually not that far away, at least in Universal terms. Situated about 11,000 lightyears away in our Milky Way. Not only is it an incredible sight, but also the strongest source of radio emissions beyond our solar system. These emissions are some of the many we receive every day, and others like them provide an exciting avenue for detecting alien life.
Number 2: M101, The Pinwheel Galaxy
The Pinwheel Galaxy is a spiral galaxy located in the Ursa Major constellation (the Big Bear.) At around 170,000 lightyears in diameter, it dwarfs our own Milky Way. And houses around 1 trillion stars. But unlike lots of galaxies, it seems to lack a central ‘supermassive black hole‘ at it’s centre. It’s mesmerising shape is a result of its rotation and gravity, as well as the influence of the gravity of other nearby Galaxies.
Number 3: The Pillars Of Creation
No list of Universal art would be complete without The Pillars of Creation. Found in the Eagle Nebula are part of a ”stellar nursery”, a huge expanse of material from which new stars are born. Our own sun was forged deep in the heart of a such a nursery. But the Pillars give us a glimpse back in time. The myriad colours represent elements present in space, such as red for sulphur and green for hydrogen. But, like any nursery, they won’t be around forever. Eventually, cosmic winds will simply blow them apart.
Number 4: The V838 Monocerotis Halo
This image captures the odd expansion and ‘echo’ of Monocerotis. The ‘halo’ itself is an artefact created by reflections of interstellar dust. The red focus is caused by the giant star itself. During the event the star became 60,000 times more luminous than our sun. NASA followed by the phenomenon over January 2002, recording the expansion of the halo and sudden dimming of the star itself.
Number 5: Hercules A
This interesting phenomenon shows two high energy plasma jets ejected by a supermassive black hole. These jets are usually a result of the high gravitational energy of a black hole, and the ring like structures outside the jets suggest that these are not the first. Hercules A is around 2.1 billion light years away. Not only do these jets provide a fascinating sight, but also tell us new things about radio waves emitted in deep space.
So thats it, a short jaunt through the Universe. But there is much more out there, so why not find your favourite and let us know? And as always, if you liked it, share it!
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