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Why are the physical constants of the universe so perfect for life?
Why are the physical constants of the universe so perfect for life?
How metaphysics probes hidden assumptions to make sense of reality
How metaphysics probes hidden assumptions to make sense of reality
Why you should assume that even the simplest animals are conscious
Why you should assume that even the simplest animals are conscious
What is a mindset and can you cultivate a better one?
What is a mindset and can you cultivate a better one?
At last, we are discovering what quantum computers will be useful for
At last, we are discovering what quantum computers will be useful for
Living Planet Symposium 2025: Opening session
ESA’s Living Planet Symposium, one of the world’s leading Earth observation conferences, opened today in Vienna. The plenary session began at 10:30 CEST and included addresses from ESA Director General Josef Aschbacher and ESA Director of Earth Observation Programmes Simonetta Cheli, as well as Margit Mischkulnig, from the Austrian Federal Ministry for Innovation.
There were video addresses from President of Austria, Alexander van der Bellen, Federal Minister for Innovation, Mobility and Infrastructure Republic of Austria Peter Hanke and the EU Commissioner for Defence and Space Andrius Kubilius. Representatives of the United Nations Office for Outer Space Affairs, ECMWF, IPCC, Eumetsat, Nordic Bildung and ETH Zurich also spoke during the opening session.
The first images from Biomass, ESA’s forest mission, launched earlier this year, were also presented during the opening plenary.
More than 6500 participants from almost 120 countries signed up to attend the event. With more than 4200 scientific presentations and posters, the symposium provides a forum and meeting point for scientists, academics and space industry representatives, as well as students and citizens.
The Living Planet Symposium takes place every three years and this year the focus is ‘from observation to climate action and sustainability for Earth’. Held in the Austrian capital over five days from today to 27 June, participants can take part in discussions on how we can work together in the fields of Earth science and with the Earth observation industry to ensure robust data and promote effective climate action to address the environmental crisis, with presentations also on new trends in Earth observation.
Watch more videos from the Living Planet Symposium 2025.
NASA Tests New RS-25 Engine
NASA tested RS-25 engine No. 20001 on June 20, at the Fred Haise Test Stand at NASA’s Stennis Space Center at Bay St. Louis, Mississippi. Test teams fired the engine for almost eight-and-a-half minutes (500 seconds), the same amount of time RS-25 engines fire during a launch of an SLS (Space Launch System) rocket on Artemis missions to the Moon. The Artemis campaign will explore the Moon for scientific discovery, economic benefits, and to build the foundation for the first crewed missions to Mars – for the benefit of all.
Four RS-25 engines, built by contractor L3Harris Technologies (formerly Aerojet Rocketdyne), help power each SLS launch, producing up to 2 million pounds of combined thrust. During the test, operators also fired engine No. 20001 up to the 111% power level, the same amount of thrust needed to launch an SLS rocket, carrying the Orion spacecraft, to orbit. The full-duration “hot fire” was the first test since NASA completed certification testing for new production RS-25 engines in 2024.
All RS-25 engines are tested and proven flightworthy at NASA Stennis. The test was conducted by a team of operators from NASA, L3Harris, and Syncom Space Services, prime contractor for site facilities and operations.
Explore More NASA Stennis ImagesNASA Tests New RS-25 Engine
NASA tested RS-25 engine No. 20001 on June 20, at the Fred Haise Test Stand at NASA’s Stennis Space Center at Bay St. Louis, Mississippi. Test teams fired the engine for almost eight-and-a-half minutes (500 seconds), the same amount of time RS-25 engines fire during a launch of an SLS (Space Launch System) rocket on Artemis missions to the Moon. The Artemis campaign will explore the Moon for scientific discovery, economic benefits, and to build the foundation for the first crewed missions to Mars – for the benefit of all.
Four RS-25 engines, built by contractor L3Harris Technologies (formerly Aerojet Rocketdyne), help power each SLS launch, producing up to 2 million pounds of combined thrust. During the test, operators also fired engine No. 20001 up to the 111% power level, the same amount of thrust needed to launch an SLS rocket, carrying the Orion spacecraft, to orbit. The full-duration “hot fire” was the first test since NASA completed certification testing for new production RS-25 engines in 2024.
All RS-25 engines are tested and proven flightworthy at NASA Stennis. The test was conducted by a team of operators from NASA, L3Harris, and Syncom Space Services, prime contractor for site facilities and operations.
Explore More NASA Stennis ImagesMoon dust is less toxic than urban air pollution, scientists discover
SpaceX launches 27 Starlink satellites from Florida (video)
Why is it seemingly impossible to stop phone thieves?
Why is it seemingly impossible to stop phone thieves?
The future of ESA Transportation
Space is huge and essential to humankind, fuelling knowledge, supporting our economies and driving global prosperity. None of this would be possible without reliable access to space.
Since 1979, Europe has relied on the Ariane rockets and Vega series to launch its missions. Today, with Ariane 6 and Vega-C, ESA ensures Europe's autonomous and independent access to space. But we are also looking ahead. With the Ariane Smart Transfer and Release In-orbit Ship (ASTRIS), Phoebus, P160C boosters, the MR-10 engine and more, ESA is enhancing its rockets with new innovations that improve cost, performance, capability and sustainability.
ESA is also leading the way in developing new propulsion systems to power the European launchers of the future. In collaboration with industry, ESA is supporting the development of new technologies to be used on rocket, boosters, upper stages, landers and spacecraft.
Initiaves like Boosters for European Space Transportation (BEST!), Technologies for High-thrust Re-Usable Space Transportation (THRUST!) and Future Innovation and Research in Space Transporation programme (FIRST!), are advancing key technologies for reusable boosters, engines and other innovations crucial for the future of space exploration. ESA's Space Rider is a reusable spacecraft and robotic laboratory, designed to stay in low Earth-orbit for two months and return payloads to Earth. Themis is a prototype for testing reusable rocket technologies, including vertical takeoff, landing and reuse, powered by the Prometheus engine.
The future of space transport extends beyond Earth launches, with in-orbit operations, transportation systems to support satellite servicing, orbital refuelling, and payload transfers between orbits.
To support all of this, ESA is upgrading its ground support and Europe's Spaceport in French Guiana, to accommodate more launches.
Through programmes like ‘Boost!’ ESA is empowering the European Space Industry, supporting innovative companies which are creating new launch services. The European Launcher Challenge is shaping a competitive European launch sector for the future, strengthening Europe's autonomous access to space.
Atlas V rocket launches 2nd batch of satellites for Amazon's Project Kuiper megaconstellation (video)
Biomass satellite returns striking first images of forests and more
Today, at the Living Planet Symposium, ESA revealed the first stunning images from its groundbreaking Biomass satellite mission – marking a major leap forward in our ability to understand how Earth’s forests are changing and exactly how they contribute to the global carbon cycle. But these inaugural glimpses go beyond forests. Remarkably, the satellite is already showing potential to unlock new insights into some of Earth’s most extreme environments.