China said Friday the risk of damage on Earth from a rocket which fell out of orbit after separating from Beijing's space station was "extremely low", after the United States warned it could crash down onto an inhabited area.

A recycled SpaceX Crew Dragon capsule with four astronauts aboard was speeding on its way to the International Space Station, where the spacecraft is set to dock early Saturday.

Noise pollution poses a long-term risk to tree populations and plant diversity that may persist even after the sources of excess noise are removed, according to research published Wednesday.

Lunar exploration firm iSpace said Wednesday it will transport a United Arab Emirates unmanned rover to the Moon next year, as the Gulf state seeks to expand its space sector. 

A three-man crew blasted off to the International Space Station Friday in a capsule honouring the 60th anniversary of Soviet cosmonaut Yuri Gagarin becoming the first person in space.

NASA's Ingenuity mini-helicopter has survived its first night alone on the frigid surface of Mars, the US space agency said, hailing it as "a major milestone" for the tiny craft as it prepares for its first flight.

Around two kilograms of radioactive material containing depleted uranium will be moved from the state-run Zahrani Oil Installations (ZOI) in the South to the stores of the Lebanese Atomic Energy Commission, ZOI director Ziad al-Zein said on Friday.

Tunisia celebrated the launch Monday of its first domestically made satellite, hoping it would inspire young engineers to reach for the stars at home rather than join those emigrating overseas.

A Russian Soyuz rocket blasted off from the Baikonur cosmodrome in Kazakhstan on Monday carrying 38 foreign satellites after takeoff was twice postponed due to technical issues, Russian space agency Roscosmos said.

The largest asteroid to pass by Earth this year has made its closest approach, posing no threat of a cataclysmic collision but giving astronomers a rare chance to study a rock formed during the beginning of our solar system.