TEHRAN (ANA)- Astro engineers at the University of Southampton are developing a groundbreaking propulsion system capable of using any metal as fuel, potentially enabling space exploration to continue indefinitely without the need to return to Earth for refueling.

TEHRAN (ANA)- China sent its first reusable and returnable test satellite, the Shijian-19, into space, using a Long March-2D rocket for the launch.

TEHRAN (ANA)- Researchers at Johns Hopkins Medicine observed that heart tissues engineered from human stem cells and sent to the International Space Station showed significant weakening and irregular rhythms compared to their Earth-bound counterparts.

TEHRAN (ANA)- The China Manned Space Agency (CMSA) unveiled the exterior design of the country's moon-landing spacesuit for the first time on Saturday, soliciting its name from the public.

TEHRAN (ANA)- Mission engineers at NASA have turned off the plasma science instrument aboard the Voyager 2 spacecraft to save shrinking electrical power supply of the probe, NASA said.

TEHRAN (ANA)- Researchers in China have uncovered a low-mass black hole within the elusive mass-gap, defying previous scientific consensus.

TEHRAN (ANA)- Researchers at Lund University have identified a small planet with a highly irregular orbital path 455 light-years away, challenging existing theories on planetary formation and stability.

TEHRAN (ANA)- NASA's Europa Clipper mission has passed a key testing, and is targeting for launch on Oct. 10, according to NASA.

TEHRAN (ANA)- NASA has decided to bring Boeing's Starliner back to Earth in September, and the two stranded astronauts, Butch Wilmore and Sunita Williams, will remain at the International Space Station (ISS) until next February, the agency announced.

TEHRAN (ANA)- Astronauts face multiple risks during space flight, such as microgravity and radiation exposure and microgravity can decrease bone density, and radiation exposure is a carcinogen, and those are chronic effects.