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Latest Activity: 5 hours ago
Cosmology - Astrophysics - Astronomy
Hubble Wallpaper - Awesome Hubble Images
Started by Tom Sarbeck. Last reply by Tom Sarbeck Oct 11, 2016.
Started by Mrs.B. Last reply by Mrs.B Apr 9, 2016.
Started by Davy. Last reply by Onyango Makagutu Mar 8, 2016.
Started by Davy Oct 3, 2013.
Started by Davy. Last reply by Davy Aug 15, 2013.
‘Game Of Thrones’ Home World Could Actually Exist, Says Science (Synopsis)
Did a ‘big whack’ create all of Pluto’s moons? (Synopsis)
Was our Universe born in chaos? (Synopsis)
Five Eclipse Phenomena You’ll See Better With A Camera Than Your Eyes (Synopsis)
Comments of the Week #169: from a theory of everything to discovering today’s Universe
AHA......I KNEW it wasn't my fault......its the galaxy's fault!!!
HST. . Bulge Formations. .Just as many people are surprised to find themselves packing on unexplained weight around the middle, astronomers find the evolution of bulges in the centres of spiral galaxies puzzling. A recent NASA/ESA Hubble Space Telescope image of NGC 4710 is part of a survey that astronomers have conducted to learn more about the formation of bulges, which are a substantial component of most spiral galaxies.When targeting spiral galaxy bulges, astronomers often seek edge-on galaxies, as their bulges are more easily distinguishable from the disc. This exceptionally detailed edge-on view of NGC 4710 taken by the Advanced Camera for Surveys (ACS) aboard Hubble reveals the galaxy's bulge in the brightly coloured centre. The luminous, elongated white plane that runs through the bulge is the galaxy disc. The disc and bulge are surrounded by eerie-looking dust lanes.When staring directly at the centre of the galaxy, one can detect a faint, ethereal "X"-shaped structure. Such a feature, which astronomers call a "boxy" or "peanut-shaped" bulge, is due to the vertical motions of the stars in the galaxy's bar and is only evident when the galaxy is seen edge-on. This curiously shaped puff is often observed in spiral galaxies with small bulges and open arms, but is less common in spirals with arms tightly wrapped around a more prominent bulge, such as NGC 4710.NGC 4710 is a member of the giant Virgo Cluster of galaxies and lies in the northern constellation of Coma Berenices (the Hair of Queen Berenice). It is not one of the brightest members of the cluster, but can easily be seen as a dim elongated smudge on a dark night with a medium-sized amateur telescope. In the 1780s, William Herschel discovered the galaxy and noted it simply as a "faint nebula". It lies about 60 million light-years from the Earth and is an example of a lenticular or S0-type galaxy – a type that seems to have some characteristics of both spiral and elliptical galaxies.Astronomers are scrutinising these systems to determine how many globular clusters they host. Globular clusters are thought to represent an indication of the processes that can build bulges. Two quite different processes are believed to be at play regarding the formation of bulges in spiral galaxies: either they formed rather rapidly in the early Universe, before the spiral disc and arms formed; or they built up from material accumulating from the disc during a slow and long evolution. In this case of NGC 4710, researchers have spotted very few globular clusters associated with the bulge, indicating that its assembly mainly involved relatively slow processes.Credit : NASA and ESA
Who'd have thought we'd be hearing this crap in the 2000's????!!!!!
Recently, the Arab and Tunisian educational and scientific community was ‘rocked’ when a certain PhD student in science presented a thesis claiming that the Earth is flat, is stationary, is the center of the universe, and is only about 13,500 years of age.
As if that wasn’t enough, the student likewise rejected Newton and Einstein’s physics, Copernicus and Kepler’s astronomy, the Big Bang cosmology, and many other scientific teachings of the past.
According to the , the student submitted the said thesis “after five years of work.” Eventually, it was “sent to two assessors, thus passing the first stage of approvals” and the defense is expected to be scheduled soon.
It likewise claims that the sub has a diameter of 1,135 km, not 1.4 million km, and that the moon has a width of 908 km – and that both of these celestial bodies like 687 and 23 times nearer to our planet.
The thesis also goes on to say that there are 11 planets and that stars have limited number.
Meanwhile, the former president of Tunisian Astronomical Association got hold of a copy and “leaked” it online.
Many has considered the claims scandalous as the thesis explicitly rejects modern science. Some, however, are disturbed by the fact that it was done by a PhD science student and her supervisor was a Professor – the “highest in academia,” Gulf News points out.
Moreover, some have attacked the journal, labeling it as “fake and predatory,” accusing it as one of those “pay and we’ll publish your article quickly, with no reviewing or editing” type of work.
Well, what do you think about this thesis, our dear readers? Tell us about it by leaving a comment below!
What a great view!
Surf’s up on Jupiter’s moon. Magma waves travelling both clockwise and anticlockwise have been spotted on the surface of a lava lake on Io, the most volcanically active body in the solar system.
The lake, called Loki Patera, is a bowl-shaped volcanic crater on Io, Jupiter’s innermost moon. It is roughly 200 kilometres across, and responsible for 10 to 20 per cent of the heat that the jovian moon puts out.
We’ve known that Loki periodically brightens and dims since the 1970s. Previous observations suggested that these changes are due to the lake recycling itself. As the top layer of lava cools, it solidifies and grows dense, until eventually it sinks beneath the underlying magma and pulls nearby crust with it in waves moving across the surface.
But most of those observations, based on a technique for reducing atmospheric blurring called adaptive optics, were only sharp enough to tell which direction the waves were moving, not how fast or where they started.
Now, Katherine de Kleer at the University of California, Berkeley and her colleagues have taken advantage of a rare collusion between Jupiter’s moons to get a high-quality time lapse of the lava lake’s surface.
Every six years, the orbits of Io and Europa – a moon of Jupiter best known for its ice shell covering a liquid water ocean – align, then cross one another from the point of view of Earth.
How far is the edge of the Universe from the farthest galaxy? https://www.forbes.com/sites/startswithabang/2017/05/06/ask-ethan-how-far-is-the-edge-of-the-universe-from-the-farthest-galaxy/ … Wow, was the Universe expanding fast in the past!
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