Science News Roundup: Burning space rocket debris lights up Iberian skies; S.Korea's second space rocket launch successfully puts satellites in orbit and more

A 162.5-kg (358 lb)satellite designed to verify the rocket's performance successfully made contact with a base station in Antarctica after entering orbit, officials said. Scientists probe link between 'snow blood' and climate change Standing on a snowy mountainside about 2,500 metres above sea level, Eric Marechal holds up a crimson test-tube.

Following is a summary of current science news briefs.

Burning space rocket debris lights up Iberian skies

Remnants of a Chinese space rocket reentering the atmosphere left long shiny trails in the night sky over Spain after midnight on Tuesday, leaving many onlookers amazed and puzzled. "I think it was the most spectacular thing I've ever seen in the sky," said Miguel J. Cruz, who shot a video, obtained by Reuters, of several bright objects crossing the sky over the southern province of Granada and multiplying as they burned up.

Swimming-Trans athlete Ivy slams FINA policy as 'unscientific'

Transgender cyclist Veronica Ivy questioned the move by swimming's governing body FINA to restrict the participation of trans athletes in elite women's competitions, telling Reuters that there had not been enough research to guide such decisions.

Ivy also criticised FINA's plans to explore an "open" category as part of its policy that was passed following a vote at its extraordinary general congress on Sunday, saying such a move does not show respect to trans athletes.

S.Korea's second space rocket launch successfully puts satellites in orbit

South Korea's second test launch of its domestically produced Nuri rocket successfully placed several satellites in orbit on Tuesday, officials said, taking a major step in efforts to jumpstart its space programme after a first test failed last year. The rocket lifted off from Naro Space Center on the southern coast of South Korea at 4 p.m. (0700 GMT). A 162.5-kg (358 lb)satellite designed to verify the rocket's performance successfully made contact with a base station in Antarctica after entering orbit, officials said.

Scientists probe link between 'snow blood' and climate change

Standing on a snowy mountainside about 2,500 metres above sea level, Eric Marechal holds up a crimson test-tube. Inside is an algae sample known as "snow blood," a phenomenon that accelerates Alpine thaw and that scientists worry is spreading. "These algae are green. But when it's in the snow, it accumulates a little pigment like sunscreen to protect itself," said Marechal, research director at Grenoble's Scientific Research National Center, who was collecting laboratory samples on Le Brevent mountain with teammates.

Biden nominates Arati Prabhakar as his top science adviser

U.S. President Joe Biden on Tuesday nominated Arati Prabhakar as the new White House science adviser, who would be the first woman of color and first immigrant to hold such a role if confirmed by the Senate. Prabhakar would head The Office of Science and Technology Policy at the White House. Her predecessor Eric Lander resigned from the post in February after violating the Biden administration's workplace policy.

Chilean beachgoers become guardians of Elasmosaurus fossils

While strolling along Los Tubos beach on the central Chilean coast, a group of neighbors found strange remains which turned out to be fossils of an ancient marine reptile that lived in the surrounding sea millions of years ago. Several fossils belonging to the long-necked sea creature from the Upper Cretaceous period, known as Elasmosaurus, were found by Andrea Galvez and other residents of the town of Algarrobo, some 95 kms (60 miles) east of Santiago, the country's capital.

(With inputs from agencies.)