By looking at the ‘shadows’ of two supermassive black holes in the process of colliding, astronomers may have a way to measure black holes in distant galaxies and test competing theories of gravity.

Three years ago, the first ever image of a black hole, at the center of galaxy Messier 87, came into focus thanks to the Event Horizon Telescope, a global network of synchronized radio dishes acting as one giant telescope.

Now a new imaging technique could allow astronomers to study black holes smaller than M87’s, a monster with a mass of 6.5 billion suns, harbored in galaxies more distant than M87, which at 55 million light-years away, is still relatively close to our own Milky Way.

In 2001, after the US World Trade Centers were destroyed in a terrorist attack, assaults on middle-eastern buildings and people in San Francisco went up. Yet the middle eastern people attacked were Jewish, not Muslim. A common sentiment among intelligentsia was that the attacks were due to Israel being created by the United Nations in 1948.

Anti-Semitism has gotten worse rather than better since, despite governments creating laws against hate crimes, according to the 28th Annual Report on Antisemitism Worldwide.

The Uralic language family and languages such as Finnish, Estonian, Saami and Hungarian began to spread west approximately 4,200–3,900 years ago, first to the central Volga region and later to the Baltic Sea and North Atlantic.

The Uralic language family is a few hundred years younger than the Indo-European one, and its spread led to contacts with Indo-Iranian language variants and the creation of a long contact zone in the area currently known as central Russia. Early loan words originating from this contact made their way into the Uralic languages that were beginning to emerge, including Sami, the Balto-Finnic languages, Mordvinic, Mari and the Permic languages.(1) 

There are three dimensions in the known universe. Fiction authors like to call time a dimension but it really isn't, it is just a way to look at the other three. Even if you don't remember what you ate for lunch yesterday the universe knows you were 2 millions miles away from where you are right now when you at it. Since everything in the universe was also shifting in chaotic ways there is no way to return and have a different lunch.

At the very large and very small scale, Newtonian gravity does not work the way it should. The universe should not be expanding and forget trying to explain quantum mechanics.

Trying to detail why electrons can behave as both particles and waves, depending on the experimental context in which they are observed, is challenging. Louis de Broglie, Niels Bohr, Erwin Schrödinger, and David Bohm all tried but used self-consistent yet contradictory interpretations.

A genetic analysis found a single point mutation in the TLR7 gene and then identified other cases of severe lupus where this gene was also mutated. 

Lupus is a chronic autoimmune disease which causes inflammation in organs and joints, affects movement and the skin, and causes fatigue. In severe cases, symptoms can be debilitating and complications can be fatal. The work resulted from whole genome sequencing on the DNA of a Spanish child named Gabriela, who was diagnosed with severe lupus when she was 7 years old. Such a severe case with early onset of symptoms is rare and indicates a single genetic cause.