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Following is a summary of current science news briefs.

Lithium find in exploding star could help solve astronomy puzzle

Astronomers have discovered lithium in a type of stellar explosion known as a nova for the first time, a find that helps clear up a longstanding mystery in astrophysics about the quantity of the element that has been observed in stars. Using two telescopes in Chile, astronomers detected tiny amounts of the chemical element lithium in Nova Centauri, which exploded in 2013 - the brightest nova so far this century, the European Southern Observatory said this week.

Toothy terror: dinosaurs like T. rex had unique serrated teeth

If you want to know the secret behind the success of Tyrannosaurus rex and its meat-eating dinosaur cousins, look no further than their teeth. Scientists on Tuesday unveiled a comprehensive analysis of the teeth of the group of carnivorous dinosaurs called theropods, detailing a unique serrated structure that let them chomp efficiently through the flesh and bones of large prey.

NASA tests new camera at a space station

NASA astronaut, Terry Virts, recently tested a new camera that seems to provide more detailed material from space.

Virts was exploring water tension in microgravity as he dissolved an effervescent tablet packaging tablet in a floating ball of water, which is captured in great detailed and high-resolution in the video.

Scientists identify men who died at Virginia's Jamestown 400 years ago

U.S. scientists have used high-tech detective work to identify the remains of four leaders of Jamestown, the New World's first successful English colony, more than 400 years after they died, the Smithsonian Institution said on Tuesday. The research also provided new insight into life and death and the importance of religion in the Jamestown settlement in Virginia, about 80 miles (130 km) south of Washington, the Smithsonian said.

U.S. investigators blame Virgin Galactic crash on lax pilot training

Federal investigators cited inadequate training of test pilots by a Northrup Grumman Corp subsidiary on Tuesday as a leading factor behind last year's fatal crash of an experimental Virgin Galactic passenger spaceship over the Mojave Desert. The premature unlocking of the hinged tail section on Virgin Galactic's SpaceShipTwo triggered a midair breakup of the ship during its fourth powered test flight on Oct. 31, the National Transportation Safety Board said.

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