ESO Top News

In celebration of the 34th anniversary of the launch of the legendary NASA/ESA Hubble Space Telescope on 24 April, astronomers took a snapshot of the Little Dumbbell Nebula (also known as Messier 76, M76, or NGC 650/651) located 3400 light-years away in the northern circumpolar constellation Perseus. The photogenic nebula is a favourite target of amateur astronomers.

They say it takes a village to raise a child. To launch a rocket, we have the combined expertise and passion of Space Team Europe. Julien Guiridlian is one of many making the first Ariane 6 launch possible and has been interviewed as part of a series highlighting some of the people that make up this dream team.

Working for France’s space agency CNES, Julien is Ariane launch complex assistant, which means he takes care of the ground segment for the combined tests on Europe’s new rocket. Julien takes care of coordinating everything from the fuel for the launcher, to ensuring there is electricity and the mechanical connections between the rocket and the launch pad. Ariane 6 is all about teamwork, and the team is ready for the match.

Stay tuned for more from #SpaceTeamEurope: an ESA space community engagement initiative to gather European space actors under the same umbrella sharing values of leadership, autonomy, and responsibility.

Find more videos from Space Team Europe.

Did you know Galileo was born in the Netherlands in the 1990s? Europe’s own global navigation satellite system was developed in ESA’s technological heart, ESTEC, in Noordwijk, almost three decades ago. Since then, it has grown to become one of the most complex and critical infrastructures ever built in Europe, as well as the largest European satellite constellation and ground segment.

Watch a replay of the ESA astronaut class of 2022 graduation ceremony.

ESA astronaut candidates Sophie Adenot, Rosemary Coogan, Pablo Álvarez Fernández, Raphaël Liégeois, Marco Sieber and Australian Space Agency astronaut candidate Katherine Bennell-Pegg received astronaut certification at ESA’s European Astronaut Centre on 22 April 2024. This officially marks their transition into fully-fledged astronauts, ready and eligible for spaceflight.

The group was selected in November 2022 and began their year-long basic astronaut training in April 2023.

Basic astronaut training provides the candidates with overall familiarisation and training in various areas, such as spacecraft systems, spacewalking, flight engineering, robotics and life support systems, as well as survival and medical training.

Following certification, the new astronauts will move on to the next phases of pre-assignment and mission-specific training, paving the way for future missions to the International Space Station and beyond.

On this Earth Day, we reflect on the importance of protecting our planet for future generations. Understanding the Earth system and the complex interactions that shape our planet is paramount for addressing environmental challenges, mitigating climate change, preparing for natural disasters, managing resources sustainably and conserving biodiversity.

Each component of the Earth system – from the atmosphere and oceans to land surfaces and ice sheets – influences and interacts with one another in complex ways. ESA works all-year round to provide satellite data to monitor the health of our planet. Here are 10 examples of how Earth’s systems intertwine and how satellite measurements are key to understanding these complex processes.

Week in images: 15-19 April 2024

Discover our week through the lens

ESA will work closely with the EU to use space to improve life on Earth, following an agreement signed today by ESA Director General Josef Aschbacher (left) and the European Commission’s Director-General for Defence Industry and Space, Timo Pesonen.

Astronomers recently used a trove of archived images taken by the NASA/ESA Hubble Space Telescope to visually snag a largely unseen population of smaller asteroids in their tracks. The treasure hunt required pursuing 37 000 Hubble images spanning 19 years. The payoff was finding 1701 asteroid trails, with 1031 of those asteroids uncatalogued. About 400 of these uncatalogued asteroids are about below a km in size.

As humans exert greater pressure on natural processes, understanding the intricate workings of our Earth system is increasingly vital for effective action on mitigation and adaption strategies. ESA’s Earth Explorer missions yield a wealth of astonishing findings, serving as the bedrock of scientific research in this field. Now, four new concepts have been selected to undergo assessment study, one of which is destined to be the twelfth in this family of world-leading satellite missions.

After being packed up in Germany, a long voyage to the US and then a month in storage, ESA’s EarthCARE satellite has been carefully lifted out of its transport container so that the team at the launch site can start getting it ready for its big day in May.

Wading through the wealth of data from ESA’s Gaia mission, scientists have uncovered a ‘sleeping giant’. A large black hole, with a mass of nearly 33 times the mass of the Sun, was hiding in the constellation Aquila, less than 2000 light-years from Earth. This is the first time a black hole of stellar origin this big has been spotted within the Milky Way. So far, black holes of this type have only been observed in very distant galaxies. The discovery challenges our understanding of how massive stars develop and evolve. 

ESA accelerates the race towards clean energy from space

Meet Hera, our very own asteroid detective. Together with two CubeSats – Milani the rock decoder and Juventas the radar visionary – Hera is off on an adventure to explore Didymos, a double asteroid system that is typical of the thousands that pose an impact risk to planet Earth.

In September 2022 NASA’s DART spacecraft tested if it was possible to divert an asteroid by giving it a shove – and found out that it was! Important knowledge, should we wish to avoid going the same way as the dinosaurs. Astronomers can observe from afar how the smaller asteroid’s orbit has shifted since DART’s impact, but there is still a missing piece of the puzzle if we want to fully understand how ‘kinetic impacting’ works in practice. Suitable for kids and adults alike, this episode of ‘The Incredible Adventures of Hera’ explains why ESA’s asteroid detective and its CubeSat assistants need to get up close and personal to shine light on this cosmic mystery.

Watch the other episodes of The Incredible Adventures of the Hera Mission

EarthCARE - ESA's cloud and aerosol mission