Science News Roundup: All-Private Astronaut Team Returns Safely From Historic Space Station Visit; Inmarsat chief warns of potentially dangerous satellite boom and more

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Here is a summary of current scientific news.

Did the key ingredients of life arrive from space? Scientists say yes

A new examination of meteorites that have landed in the United States, Canada and Australia reinforces the idea that such objects may have delivered to Earth early in its history chemical ingredients vital for the advent of life. Scientists had previously detected on these meteorites three of the five chemical components necessary for the formation of DNA, the molecule which carries the genetic instructions in living organisms, and RNA, the molecule crucial to control the action of genes . The researchers said on Tuesday they had now identified the latter two after refining the way they analyze meteorites.

Inmarsat chief warns of potentially dangerous satellite boom

British satellite company Inmarsat warned on Tuesday of dangerous levels of space debris coming from satellite constellations planned by Elon Musk’s Starlink, Amazon, Chinese operators and others. Inmarsat chief executive Rajeev Suri praised innovation in low-orbit satellite constellations, but added there should be better industry and regulatory coordination when they are launched.

All-Private Astronaut Team Returns Safely From Historic Space Station Visit

The first fully private team of astronauts to fly aboard the International Space Station (ISS) was safely stranded in the Atlantic off the coast of Florida on Monday, concluding a two-week science mission hailed as a landmark in commercialized human spaceflight. The SpaceX crew capsule carrying the four-man team, led by a retired NASA astronaut who is now vice president of the Texas-based company behind the mission, Axiom Space, parachuted into the sea after a 16-hour descent from orbit.

(With agency contributions.)

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