Explainer: What is microgravity?

It's easy to assume that astronauts float in space because they are far away from the Earth's gravitational force. But look at the moon. It is much further away than the International Space Station, yet it orbits around the ...

NASA fears leaving space station unmanned (Update)

The possible first-ever evacuation of the International Space Station, if a Russian spacecraft is not launched in November, would risk the loss of the orbiting lab, a NASA official has warned.

Fish are adapting to weightlessness on the Chinese space station

Four zebrafish are alive and well after nearly a month in space aboard China's Tiangong space station. As part of an experiment testing the development of vertebrates in microgravity, the fish live and swim within a small ...

Can organisms survive on Mars, and can we identify them?

Earth is a very special planet. It is the only celestial body in the solar system on which we know life exists. Could there be life on other planets or moons? Mars is always the first mentioned in this context; it has many ...

Drug discovery and developmentā€”in space

Carrying out scientific experiments in space allows scientists to study and make drugs without gravity, which can lead to surprising results that improve research back on Earth. According to a cover story in Chemical & Engineering ...

Space tourism: the arguments in favor

To its many detractors, space tourism amounts to nothing more than joy-rides for the global super rich that will worsen the planet's climate crisis.

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