Archive for the ‘cosmology’ category

May 8, 2019

Chandra X-ray Observatory Photo 3

Posted by in category: cosmology

Right now Chandra is studying the core of a galaxy in Fornax! Nearby in the sky is NGC 1097, a galaxy with copious clusters of young, blue stars speckling its spiral arms. This galaxy contains a central black hole about 100 million times the mass of our Sun!

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May 7, 2019

A class-leading camera at half the price? Just buy the Pixel 3a already

Posted by in categories: cosmology, mobile phones

These scores are a good deal lower than phones using the latest Snapdragon 855 processor, such as the Galaxy S10, as well as the Snapdragon 845 chipset in the Pixel 3 series. However, it surprisingly beat out the Google Pixel 2 and 2 XL, which scored 146,876 and 110,949 on AnTuTu, respectively.

There may be a few graphically-intensive games that could give the Pixel 3a and 3a XL pause, but so far, my experience has been pleasantly smooth.

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May 6, 2019

Telescopes in space for even sharper images of black holes

Posted by in categories: cosmology, satellites

The idea is to place two or three satellites in circular orbit around the Earth to observe black holes. The concept goes by the name Event Horizon Imager (EHI). In their new study, the scientists present simulations of what images of the black hole Sagittarius A would look if they were taken by satellites like these.

More than five times as sharp

“There are lots of advantages to using satellites instead of permanent radio telescopes on Earth, as with the Event Horizon Telescope (EHT),” says Freek Roelofs, a PhD candidate at Radboud University and the lead author of the article. “In space, you can make observations at higher radio frequencies, because the frequencies from Earth are filtered out by the atmosphere. The distances between the telescopes in space are also larger. This allows us to take a big step forward. We would be able to take images with a resolution more than five times what is possible with the EHT.”

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May 4, 2019

How to think about… The multiverse

Posted by in category: cosmology

The multiverse isn’t a hypothesis – it’s a prediction of our best theories of reality.

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May 3, 2019

Scientists Just Detected a Black Hole Devouring a Neutron Star

Posted by in category: cosmology

The first-of-its-kind event is giving scientists a vast cache of new information about the dynamic universe.

Black hole mergers have become nearly commonplace, but this is still a “first.”

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May 1, 2019

These Super-Precise Clocks Help Weave Together Space And Time

Posted by in categories: cosmology, physics, space travel

Insanely precise atomic clocks are letting astrophysicists image black holes, steer spacecraft, and maybe one day hunt for gravitational waves.

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May 1, 2019

Astronomers Discover ‘Extraordinary’ Black Hole That Is Warping Space-Time

Posted by in categories: cosmology, physics

Nearly 8,000 light-years away from Earth, astronomers have discovered a black hole that keeps rapidly swinging out jets of plasma clouds into space, according to a new study.

The black hole, known as V404 Cygni, doesn’t behave like others. The jets shoot out possibly within minutes of each other and in all different directions. And while the researchers admit that black holes are some of the most extreme objects in the universe, this one is different.

“This is one of the most extraordinary black hole systems I’ve ever come across,” study author James Miller-Jones said in a statement. Miller-Jones is also an associate professor at Curtin University’s International Centre for Radio Astronomy Research.

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Apr 30, 2019

Dark Matter BREAKTHROUGH: Mystery substance ‘EXISTS’ and explains 90% of the universe

Posted by in categories: cosmology, innovation

DARK MATTER is not a hypothetical substance but is real and is a fundamental building block of the universe, according to a shocking new study.

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Apr 29, 2019

Astronomers Spot Distant Black Hole Spinning So Fast That It Warps Space-Time

Posted by in categories: cosmology, physics

Last observed in 2015, the black hole is spewing out ‘wobbly’ plasma jets that move so fast they change orientation within minutes.

Some 8,000 light-years from Earth in the Cygnus constellation (“The Swan”), a small black hole weighing just nine times the mass of Earth’s sun is gobbling up a sun-like star. The black hole and its stellar victim are locked together in what astronomers call a binary system and orbit each other once every 6.5 days – with spectacular effects, the National Radio Astronomy Observatory (NRAO) is reporting.

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Apr 29, 2019

The Universe Might Be a Billion Years Younger Than We Thought

Posted by in category: cosmology

New data from the Hubble Space Telescope confirms that the universe is expanding nine percent more rapidly than theoretical calculations predicted.

Those original calculations were based on data from the early universe, so many scientists suspected that something sped up the works. But the new Hubble data suggests that the universe could be substantially younger than previously believed — perhaps by as much as a billion years, according to the Associated Press.

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