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According to scientists, there is a possibility that the mystery that why humans have chins could soon be solved. New research at the University of Florida revealed that the chin started to emerge as a consequence of major changes six million years previous. The scientists said emergence of cooking and softer food meant that humans no longer required big teeth and powerful jaws. More than the next two million years both got smaller and the chin was born.

Chin data from over 100 primate species was gathered by a team of scientists. The scientists compared this data with historical data. Computer modeling helped to trace the shifting orientation of the front of the jaw and the rate at which the chin developed.

The Rosetta probe of the European Space Agency (ESA) ran into trouble during a March 28 flyby near the nucleus of comet 67P/Churyumov Gerasimenko.

The fault is being analyzed by ground controllers after the spacecraft's encounter with comet dust confused its navigation system.

Rosetta moved past the comet's icy core at a distance of about 14 kilometers, or 8.7 miles during the March 28 flyby. According to ESA, the probe aimed for a flyby point over the larger of comet 67P's two lobes.

Since the comet is swinging closer to the sun, it is heating up and triggering plumes of outgassing water vapor and dust particles. The dust grains pushed against Rosetta's long power-generating solar arrays as it approached the comet.

A rocket that carried the US's first space nuclear reactor shot off from the California coast 50 years ago. The first identified reactor, SNAP-10A, has been circling the Earth ever since and will continue to circle for yet another 3,000 years. The US space agency NASA ran a System for Nuclear Auxiliary Power (SNAP) plan to study possibility of using nuclear power in space exploration in the 1960s.

For the first time, radioisotope thermoelectric generators were sent up in space. These technologies are still used in today's space probes like Voyager and Curiosity.

Those who were able to wake up early Saturday morning were rewarded with the total lunar eclipse that last for a very short time, but then also it dazzled.

People who were able to wake up early in the western US and Canada should have been able to get a glimpse of blood moon before dawn Saturday. It was the shortest lunar eclipse of the century.

People in eastern Australia, New Zealand and Japan have seen the eclipse at night. It was almost five-minute long total lunar eclipse. As per NASA, it started at 5.58 and continued till 6.03 am. During the time of the eclipse, the moon changed its color from its normal grayish hue to deep, blood red.

On Friday, US Senator Richard Blumenthal from Connecticut said that there is a potential amount of USD 13.4 million which has to be paid to tax payers for the year 2011.

According to Blumenthal, that money belongs to people who didn't claim the federal Earned Income Tax Credit. The plan is offered for people with current moderate incomes. It reduces the amount of taxes a person owes or it could outcome in a refund.

Blumenthal said that when he verified the amount of unclaimed refunds owed to Connecticut taxpayers, the IRS told him that 2011 tax returns have not yet been filed by more than 13,400 Connecticut residents.

Some of these could not have met the income threshold for filing a federal tax return but might have qualified for the earned earnings tax credit.

All members of a Delaware family fell seriously ill during a Caribbean vacation. According to a report on ABC station WPVI-TV, school administrator, Steve Esmond, his wife, Dr. Theresa Devine, and their two teenage sons were on a vacation in March.

The family might have been exposed to the pesticide methyl bromide at the Sirenusa Resort on St. John in the U.S. Virgin Islands, states the report.

According to Judith Enck, Administrator for the Environmental Protection Agency's (EPA) Region 2 Office, the day the family arrived at the resort, the apartment below them was sprayed with methyl bromide to kill indoor bugs.