BEIJING, July 27 (Xinhua) -- The following is a summary of published science and technology news of China.

HEROIC ASTRONAUTS

Three astronauts from the Shenzhou-17 crewed mission were awarded medals on Friday for their service to China's space endeavors.

Tang Hongbo was honored with a second-class aerospace achievement medal, while Tang Shengjie and Jiang Xinlin received third-class medals and the honorary title of "heroic astronauts."

HIGH ENERGY

Chinese scientists have identified a gamma-ray spectral line with energy levels peaking at 37 million electron volts, the highest-energy gamma-ray spectral line ever observed from cosmic celestial bodies. The discovery will significantly advance the understanding of gamma-ray bursts (GRBs).

The study, led by researchers from the Institute of High Energy Physics (IHEP), Chinese Academy of Sciences, was published as a cover story in the journal Science China Physics, Mechanics & Astronomy on Thursday.

GRBs, usually very short in duration, are the most violent explosive phenomena in the universe after the Big Bang, and they occur during the collapse of massive stars or the merging of binary compact stars, such as neutron stars and black holes.

SCIENCE TRAVEL

Many travelers in China this summer are seeking to shake things up a bit, exploring vacation options in the world of science and technology. This reflects a growing fascination with all things scientific in the country.

In Beijing, holiday-makers have been enjoying a "cooling" break from the scorching heat thanks to science exhibits with a polar twist. Visitors at the National Museum of China have been exploring an exhibition on the country's polar expeditions, pausing to marvel at a display of ice cores and meteorites from the Antarctic. Enditem

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