This cool piece really is out of this world. It does not display the sky, but it does have a touch of outer space in the background and the purple and pink in it definitely remind us of some of the pictures of our own galaxy. There are many different renditions of the tree of life, but this tree of life necklace is super cool!
Everybody has to show off their personality in the way they dress. This is a no brainer, you are just as fascinated with the mystery behind this mystic tree as the next guy aren’t you? Well, if you are ready to grab a great necklace at a great price we have found a special buy for you. Just follow the link below and you will get your first one for $9.99 and the second for half off. We thought this was a great price and thought that it was worth sharing with our readers. We hope you think the same.
Black holes may have a limit to how much they can eat in the public eye.
Artist’s rendering of a supermassive black hole. The black hole itself is dark, but these beasts can be seen from across the observable universe by the light emitted from the accretion disks that feed them. NASA / JPL-Caltech
Even the most gluttonous black hole reaches a point when it pushes itself away from the public buffet line, preferring instead to sneak its treats on the sly..
The gluttony limit of a black hole is around 50 billion times the mass of the Sun, according to calculations by Andrew King (University of Leicester, UK, and University of Amsterdam, The Netherlands). By some deceptively simple reasoning published in the December 10, 2015, Monthly Notices of the Royal Astronomical Society, King shows that once a black hole reaches this mass, the disk of gas that acted as the black hole’s dinner buffet begins to crumble apart, collapsing under its own weight into stars.
The gaseous disk that feeds growing black holes is what enables us to see these dark objects, even from a distant universe less than 1 billion years old. Take away the gas and you take away the visible and ultraviolet light that signals a black hole’s gorging.
“If the black hole is very massive, then the gas disc would have to be correspondingly large and massive,” explains Zoltan Haiman (Columbia University). “The main idea in King’s paper is that above a certain mass, the gas in such a disk would be gravitationally unstable — i.e., it would collapse into clumps under its own weight, before the gas can funnel inward into the black hole.”
In other words, even the immense gravitational pull of a 50 billion solar-mass black hole can’t overcome the self-gravity that clumps up the surrounding matter.
The most luminous supernova ever discovered, ASASSN-15lh, challenges a popular theory for blazingly bright exploding stars.
The left image shows the yellow-orange host galaxy prior to the supernova’s discovery, captured by the Dark Energy Camera. The righthand image, from Las Cumbres Observatory Global Network, shows the supernova, whose blue light outshines its host. The Dark Energy Survey / B. Shappee / The ASAS-SN Team
About six months ago, we alerted readers to the discovery of the most luminous supernova ever. Now the discovery team is releasing additional information, and it strains even the most extreme physical scenarios.
The explosion of light initially appeared in June 2015 as the faintest of dots in automated images taken by the All-Sky Automated Survey for Supernovae (ASAS-SN), which repeatedly observes the same areas of sky to look for ephemeral bursts of light. Sophisticated software spotted the sudden but subtle influx of light, prompting astronomers to go fishing for follow-up observations at several telescopes. They soon found that the light from the source, dubbed ASASSN-15lh, had traveled for 2.8 billion years to reach Earth.
Due to its distance, ASASSN-15lh only reached about 17th magnitude at its brightest, but its luminosity outshone any supernova yet discovered. Even months later, this single object continues to emit more energy per second than all the stars in the Milky Way.
This image shows two of the 14-cm telescopes used in the All-Sky Automated Survey for SuperNovae that discovered ASASSN-15lh. Wayne Rosing
Subo Dong (Peking University, China) and colleagues released an update to the discovery data in January 15th’s Science. Following a spate of follow-up spectra, the team continued to track the supernova’s goings-on using the Las Cumbres Observatory Global Telescope Network (LCOGT; see the October 2012 issue of Sky & Telescope for more on this ambitious project) and the Swift space telescope. The light curves
Lets face it, what the stars mean to each of us varies quite a bit. However, we all look up to them in wonder from time to time. If you love stars and space like we do you are going to love our site.
You will find all sorts of great stuff here. From cool videos about stars, space and beyond; to great tees and gifts for the start lovers you know. We hope to be bringing a lot of new things very soon, so go ahead and bookmark us and follow us today.
The moon is probably one of the most talked about things in the sky today. This is most likely because anybody can see it without a telescope. It is also the only object in space that man has stood foot on. Star gazers will find the video in this post most interesting, give it a watch and don’t forget to comment below!
Cool Astrology Video – Sagittarius and The New Moon