A 5-year microbial study of the International Space Station (ISS) and its astronauts by Lawrence Livermore National Laboratory (LLNL) and NASA researchers has found that the ISS habitat is safe for its residents.

The research effort represents the first comprehensive characterization of the space station's environmental profile (or microbiome) and is the first to compare the ISS microbiome to an astronaut's microbiome using metagenomic DNA sequencing techniques.

A partial solar eclipse began over Iceland on Tuesday as the rare celestial spectacle started to make its way east across a swathe of the Northern Hemisphere.

The partial eclipse began at 0858 GMT and will end off the coast of India at 1302 GMT, crossing parts of Europe, North Africa and the Middle East on its way, according to the IMCCE institute of France's Paris Observatory.

Amateur astronomers must not stare directly at the eclipse, which will not darken the sky, and should instead wear protective glasses to avoid eye damage, experts said.

Solar eclipses occur when the Moon passes between the Sun and Earth, casting its shadow down onto our planet.

A total solar eclipse happens when the Moon completely blocks the Sun's disk, momentarily plunging a portion of the Earth into complete darkness.