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A group of astronomers at the Keck Observatory in Hawaii has made a significant discovery. While surveying the sky, they have discovered a quadruple quasar in the early universe.

Researchers affirmed that the four quasars are surrounded by a nebula of dense, cold hydrogen gas. Lead researcher Joseph Hennawi of the Max Planck Institute for Astronomy has termed these quasars as ‘Jackpot nebula’, owing to the rare quasar activity.

The nebula is quite bright because of the light from the active black holes. J. Xavier Prochaska, professor at the University of California Santa Cruz, affirmed that this region has several hundred times more galaxies that one could expect to witness at such great distances.

A journal Science-published study has unveiled about the discovery of first warm-blooded fish. The moonfish, also known as the opah, is quite a fast moving fish having great vision. The fish has quick reactions and high stamina.

The researchers have explained some of the great qualities of this warm-blooded fish. The researchers affirmed that the fish being warm-blooded acts as an active predator in the water. It is quite different from other fish that act sluggish in cold water.

Lead researcher Nicholas Wegner assessed the samples of the gill tissue of the fish. After observing them, Wegner noted that the opah’s tissue has blood vessels, which help the warm blood to be carried into the gills of the fish.

Mayor of New York City Bill de Blasio has decided to investigate nail industry practices. On Friday, the mayor announced that his administration will crackdown on nail salons which are accused of abusing immigrant workers by not giving them minimum wage and forcing them to deal with harmful chemicals.

The announcement on Friday by Bill de Blasio came after two-part series in American daily newspaper The New York Times. According to reports by the newspaper, a number of manicurists in the city have been working for far less than minimum wage. The reports also stated that many manicurists have also been suffering dangerous effects of toxic chemicals.

After a week long fight over matters ranging from congressionally mandated spending caps to immigration, house lawmakers on Friday passed annual military-spending bill of roughly $612 billion.

The National Defense Authorization Act was passed on 269-151 party-line vote. Four republican representatives from Arkansas also voted for the measure.

House Speaker John Boehner, R-Ohio, said in a statement, “With all the threats our troops face and the sacrifices they make, Democrats' opposition to this defense bill is in fact indefensible”.

According to District of Columbia Police Chief Cathy Lanier, fire in Northwest Washington home where four people were found dead was intentional.

Two of the fire victims have been identified as Savvas Savopoulos, 46, and his wife, Amy Savopoulos, 47.

Lanier said the other two victims had been identified as the 10-year-old son, Philip, and a housekeeper, Veralicia Figueroa, 57, of Silver Spring, Md.

Officials said autopsy findings revealed that three of the four victims had blunt-force injuries or stab wounds. The injuries were sustained before the fire was set on Thursday afternoon, said Lanier.

The American space agency NASA made a series of tourism posters for some exoplanets that were discovered by Kelper.

Now, SpaceX has jumped into the queue and has created some really fantastic posters of a trip to Mars, which seems to be much more achievable than something located several light years away.

Elon Musk has made no secret of his plan to take his company to the Red Planet someday. These posters are just a little teaser to encourage people for a trip to the Red Planet.

The highest points and the lowest trenches included are the moons. The images have also been released Creative Commons, per Spacex's new love of the licensing.