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![a group of people stand behind a man signing a document in front of flags](https://cdn.mos.cms.futurecdn.net/T9XdgDoHyuVZ7x3bg3BDnW-320-80.png)
Slovenia signs NASA's Artemis Accords for cooperative space exploration
By Samantha Mathewson published
Slovenia signed NASA's Artemis Accords on April 19, becoming the 39th country to affirm their cooperation in future space endeavors to the moon and beyond.
![Graphic showing the the artemis accords logo above white text reading "the artemis accords", the surface of the moon is seen in the lower portion of the image and a distant Mars peeks out from the surface of the moon.](https://cdn.mos.cms.futurecdn.net/iecWzr9daAehJjh6A74TKF-320-80.jpg)
Artemis Accords: What are they & which countries are involved?
By Robert Lea last updated
Reference As the Artemis program aims to return humanity to the moon and beyond, the Artemis Accords lay out a framework for nations collaborating in this effort.
![six people in blue flight suits stand on a stage, each one holding a plaque](https://cdn.mos.cms.futurecdn.net/KwcKWfY2TmctgTUw8Kz43h-320-80.jpg)
ESA graduates the 'Hoppers': Europeans, Australian pass astronaut basic training
By Robert Z. Pearlman published
The "Hoppers" — five European astronauts and the first astronaut from the Australian Space Agency — are now ready to "hop" into their first flight assignments, having completed basic training.
![Artist's illustration of space junk orbiting Earth.](https://cdn.mos.cms.futurecdn.net/naQtry7CedNEFLbjen6Rqe-320-80.jpg)
India aims to achieve 'debris-free' space missions by 2030
By Sharmila Kuthunur published
India has announced its intent to join the global effort to reduce space debris in low Earth orbit.
![An illustration of a spacecraft with a white disk in space.](https://cdn.mos.cms.futurecdn.net/2LtFhcaQXV7cBaUx7Nra4A-320-80.jpg)
NASA's Voyager 1 spacecraft finally phones home after 5 months of no contact
By Robert Lea published
On Saturday, April 5, Voyager 1 finally "phoned home" and updated its NASA operating team about its health. The interstellar explorer is back in touch after five months of sending back nonsense data.
![flames shoot out of a cone-shaped rocket engine poking out of a hangar-like building](https://cdn.mos.cms.futurecdn.net/Mv9spbTT4dbiebYaVoiyJX-320-80.jpg)
China's new reusable rocket aces key engine tests
By Andrew Jones published
China has made progress on a powerful rocket engine to power its new reusable rockets that are expected to launch the nation's planned crewed moon missions.
![a pale yellow planet orbits close to a large orange star](https://cdn.mos.cms.futurecdn.net/ciHgL9mcQBLMskbxDaxiGg-320-80.jpg)
How could life survive on tidally locked planets?
By Paul Sutter published
Space mysteries Astronomers are especially interested in the habitability of these kinds of planets, which always face their star with the same side, because they are incredibly common in the universe.
![A snapshot of Cassini flying through the plumes of Enceladus during its final orbits between April and September 2017](https://cdn.mos.cms.futurecdn.net/rq8VeLYPLhzeSv5v7jYFFK-320-80.jpg)
Saturn's ocean moon Enceladus is able to support life − my research team is working out how to detect extraterrestrial cells there
By Fabian Klenner published
As a planetary scientist and astrobiologist who studies ice grains from Enceladus, I'm interested in whether there is life on this or other icy moons. I also want to understand how scientists like me could detect it.
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