With final tests complete, ESA's HydroGNSS mission is set for launch this month. Part of the FutureEO programme, this Scout mission will use GNSS reflectometry to measure climate variables to improve understanding of Earth’s water cycle 🧪🌏 www.esa.int/Applications... (pic: ESA/ATG medialab)

SWOOSH! 🧹 When a meteoroid struck Mars, it triggered ~100 dust avalanches down an ancient volcano's slopes. @esa.int's ExoMars Trace Gas Orbiter captured the dramatic effect of the rare cascade. A new @nature.com study examines the most common causes of these streaks. www.esa.int/ESA_Multimed...

📸 JUST IN: new photographs of the Ariane 6 #VA265 #Copernicus Sentinel-1D launch earlier this week by our ESA and CSG photographers. www.flickr.com/photos/europ...

📷 This shimmering view from the ESA Euclid mission shows the dark cloud LDN 1641. Though nearly invisible to the human eye, Euclid’s infrared vision uncovers a rich landscape of gas, dust and dozens of newborn stars🧪🔭 www.esa.int/ESA_Multimed... @science.esa.int @ec-euclid.bsky.social

A #CosmicVision mission, #ESAJuice is en route to Jupiter. Juice successfully performed the world's first Lunar-Earth flyby in 2024, followed by a Venus flyby this year. The spacecraft is now on track to swing by Earth two more times and arrive at Jupiter in July 2031. 1/ #CM25

🌍 Together with the African Space Agency #AfSA we have taken another significant step in strengthening cooperation between Europe and Africa in space by jointly supporting the Space Systems Engineering Training Course. 🛰️ 🔗 www.esa.int/Education/ES...

Last night, we witnessed the successful launch of Sentinel-1D on an Ariane 6, a great launch for Europe a double win for ESA and its Member States. ESA delivers!

The #CopernicusEU Sentinel-1 mission welcomes a new member: Sentinel-1D, launched at 21:02 GMT/22:02 CET from Kourou on Ariane 6 #VA265. www.esa.int/Applications... @cnes.fr @euspa.bsky.social @ec.europa.eu @thalesaleniaspace.bsky.social @transport.esa.int

Liftoff for Ariane 6 on flight #VA265 carrying the @CopernicusEU Sentinel-1D satellite to space.

Liftoff of Ariane 6 #VA265 with #CopernicusEU Sentinel-1D on 4 November 2025! Follow live on watch.esa.int/two/ @euspa.bsky.social @cnes.fr @thalesaleniaspace.bsky.social @transport.esa.int

🔴 LIVE now for the launch of Ariane 6 #VA265 and #Copernicus Sentinel-1D on #ESAwebTV2👇https://watch.esa.int/two/

Launch Readiness Review concludes: we are ready! 🛰️Earth observer Copernicus Sentinel-1D is on its #Ariane6 rocket and set for launch. ☁️ Weather conditions favourable. 🚀 Liftoff at 21:03 GMT/22:03 CET ▶️ Watch live: www.esa.int/Applications...

🚀 #WatchLive: Tonight we have the launch of the #Copernicus Sentinel-1D satellite on Ariane 6 flight #VA265. Tune in from 20:35 GMT/21:35 CET on #ESAwebTV2 to watch live. 📺 watch.esa.int More details👇 @cnes.fr @euspa.bsky.social @ec.europa.eu @thalesaleniaspace.bsky.social @transport.esa.int

📷 What lies at the heart of this unusual-looking spiral galaxy? This NASA/ESA #Hubble Space Telescope image shows galaxy NGC 4102, home to what astronomers call an 'active galactic nucleus' 🧪🔭

I recently signed an Implementing Arrangement between @esa.int and the State Space Agency of Ukraine. This agreement launches our first joint projects, opening the door for Ukrainian scientists, engineers and companies to work alongside ESA Member States.

🚀 Ready to launch your career into space? ESA Student Internships 2026 are now open! www.esa.int/About_Us/Car... #ESArecruits

📷 This was our #WeekInImages 27-31 October 2025 👇 www.esa.int/About_Us/Wee...

📡 There is a place in Europe that talks to the International Space Station every single day. 🛰️ Welcome to a day in the live of the Columbus Control Centre, our direct link to Europe’s space laboratory, where teams provide 24/7 support to keep science running in orbit.

Exactly 25 years ago, at 09:21 UTC, the era of continuous human presence on the International @Space_Station began. Since Crew One took up residence in 2000, 21 @esa.int astronauts have lived and worked on this orbital outpost, conducting essential research to benefit life on Earth.

Earth observing satellite Copernicus Sentinel-1D is now on top of our Ariane 6 rocket – ready for liftoff on 4 November 🚀 Set a reminder to watch live, broadcast begins at 20:15 GMT/21:15 CET : www.esa.int/Applications...

Asteroids and solar storms and space debris, oh my! Explore the upcoming fleet of ESA Space Safety missions dedicated to safeguarding humans and infrastructure on Earth and in orbit from hazards originating in space: www.esa.int/ESA_Multimed...

The spooky sound just before a liftoff 😨 This video shows a Vega-C rocket carrying the Copernicus Sentinel-1C satellite to orbit. Next week its sibling Sentinel-1D will be launched on an Ariane 6 rocket. Now tell us: is this a haunting sound, or music to your hears? #Halloween #SpookySeason

Happy creepy Halloween, everyone! 🎃

Do you wanna hear a scary story? 😱 Four astronauts. One underground mission. Total darkness. Every task demanded teamwork. Every step required trust. In space or in a cave, no one explores alone. An international crew completed @esa.int's CAVES training, living in isolation underground for 4 days.

📷 This is Lake Carnegie in Australia, as seen by #Copernicus Sentinel-2. Being a large ephemeral lake, Carnegie fills with water only after heavy rains, usually rare in the region. This view comes after unusually high rainfall, making the lake’s ghostly ‘face’ easily seen from space... 🧪🌏

Booooo!! 👻 It’s #SpookySeason! Can you guess what's making this candle's flame flicker? 🕯️ Is it... a) ghost b) microgravity We know it’s tricky, so we’re treating you to the answer 🎃 www.esa.int/ESA_Multimed... Happy #Halloween! 🦇

🔊 Guess the sound! 🔴 Our engineering teams just picked up an audio signal they’re calling "Creepy Mars." 🤔 What do you think is making this squeaky noise? Drop your answer in the comments, we’ll reveal it at 16h CET! #Halloween #SpookySeason

Join us from 19:00 CET for the live premiere of 'Seas of the Sun: The story of Cluster' 🍿 #ESACluster scientists & engineers, as well as the filmmakers will be waiting for your questions in the live chat. Watch here👉 www.youtube.com/watch?v=Go_r... Heads up @esww2025.bsky.social #ESWW2025 🔭 🧪 ☀️

Viewed by #CopernicusEU Sentinel satellites, hurricane #Melissa seen over the Caribbean, currently the strongest tropical cyclone of the year worldwide. Our thoughts are with everyone affected. Please follow guidance from local authorities and stay safe. @noaa.gov @euspa.bsky.social @eumetsat.int

📺 #WatchLive: #CopernicusEU Sentinel-1D is just days away from launch on Ariane 6 flight VA265. 🚀 Next Tuesday, 4 November, from 20:35 GMT/21:35 CET on #ESAwebTV2, watch the liftoff live 👉 watch.esa.int More details 👇 @cnes.fr @thalesaleniaspace.bsky.social @transport.esa.int @euspa.bsky.social

The Copernicus Sentinel-1D satellite is now safe and cozy inside Ariane 6's fairing! 🧸 The blue tiles inside the fairing work as acoustic protection dampening the noise created during launch. Liftoff is scheduled for 4 November at 22:02 CET (21:02 GMT, 18:02 Kourou time). 📸 ESA - M. Pédoussaut

🇯🇵 We're establishing a new presence in Tokyo, Japan, our first in Asia! Our new ESA office in Tokyo will serve as a strategic outpost for deepening bilateral engagement, and sets the course for an ambitious new chapter in European-Japanese space collaboration🤝 www.esa.int/About_Us/Cor...

Europe needs to synchronise space for defence initiatives, align competencies, avoid duplication & pool resources. We remain too fragmented to guarantee Europe with genuine, comprehensive and autonomous space resilience. We have an opportunity to change that, and we must. www.esa.int/About_Us/Cor...

Building on its strong expertise in security and resilience, Poland is uniquely positioned to play a leading role in ESA’s European Resilience from Space initiative at ESA's Ministerial Council, a timely opportunity to reaffirm its long-term strategic commitment to European space leadership.

📷 Hurricane #Melissa captured by the #CopernicusEU Sentinel-3 satellite on 26 October using its radiometer 🧪🌍 www.esa.int/ESA_Multimed... @esaearth.esa.int @noaa.gov

Red Spider Nebula, caught by Webb 🕸️ 🕷️ Planetary nebulae like this cosmic creepy-crawly form when stars like the Sun reach the end of their lives, balloon into cool red giants & shed their outer layers 👉 www.esa.int/ESA_Multimed... 🧪 🔭

Discover the story of #ESACluster as told by the people who lived it. Join us on 30 October from 19:00 CET for the premiere of 'Seas of the Sun: The story of Cluster' 🥹 👉 www.youtube.com/watch?v=Go_r... 🔭 ☀️ @spacerocksofficial.bsky.social

#Europe 's resilience is being tested. It's time to act now. Our programme IRIS² aims to be the backbone for secure governmental communications for the broader @esa.int programme European Resilience from Space. To ensure everyone is securely connected, wherever, whenever it's most needed.🌐

📣It's tiiiiiime! The European #SpaceWeather Week #ESWW2025 in Umeå 🇸🇪 has kicked off today! ☀️✨🍭🌍📡🛰️⚡️✈️🚀👨‍🚀 There's lots going on for ESA and the ESA SWE Service Network at ESWW with contributions across many sessions. We'll be sharing some highlights over the coming week👀 #SpaceSafety

📷 This NASA/ESA #Hubble Space Telescope image shows spiral galaxy NGC 4571. Its dusty spiral arms are dotted with brilliant pink nebulae that contain massive young stars 🧪🔭 esahubble.org/images/potw2... @stsci.edu @science.esa.int

📷 #EarthFromSpace: this #Copernicus Sentinel-2 image captures the meandering course of the Likouala-aux-Herbes river in the Republic of the Congo 🧪🌍 www.esa.int/ESA_Multimed... (pic: ontains modified Copernicus Sentinel data (2025), processed by ESA)

#MediaInvitation: journalists are invited to follow the launch of Copernicus Sentinel-1D on Ariane 6 VA265 live from ESA ESOC Mission Control, Darmstadt, Germany, on Tuesday 4 November 2025. Details and registration 👇 www.esa.int/Newsroom/Pre... @euspa.bsky.social @ec.europa.eu @transport.esa.int

The second of four @science.esa.int Cluster satellites has reentered the atmosphere. Rumba’s 25-year dance around Earth ended in a targeted reentry over a remote region of the Pacific Ocean at 20:59 CEST on 22 October.

Decisions and announcements following the 337th ESA Council which concluded today in Paris 👉 www.esa.int/Newsroom/Pre...

🔴 Live now!

🤝Cyprus joins @esa.int as an Associate Member State www.esa.int/About_Us/Cor...

📺 #ComingUp: watch this afternoon's information session on #ESAwebTV2 after this week's ESA Council meeting. Briefing starts at 15:00 BST/16:00 CEST. 👉 watch.esa.int

Congestion and pollution in Earth orbit is quickly getting worse. We need to be able to quantify how our behaviour will impact the orbital environment in the future...

🗓️ Coming soon! The untold story of our pioneering 25-year #Cluster mission that studied the invisible solar storms impacting our Earth 🧪🔭 ☀️ 'Seas of the Sun: The story of Cluster', a documentary by @spacerocksofficial.bsky.social and @science.esa.int, will premiere here, 30 October, 19:00 CET 👇

FILM ALERT! Seas of the Sun – The Story of the Cluster Mission. You can watch it live on @esa.int's Youtube channel next week, October 30th, from 18:00 GMT / 19:00 CET where we’ll be joined by the people behind Cluster in a live chat accompanying the film. #ESAcluster #spacerocks #seasofthesun