23/06/2026
Our CAVES astronaut training course kicks off today!
5️⃣ astronauts
4️⃣ days of exploration
3️⃣ space agencies
1️⃣ cave
Meet the 'cavenauts':
Rosemary Coogan, ESA astronaut 🇬🇧
John McFall, member of ESA's astronaut reserve 🇬🇧
Tracy Dyson, NASA astronaut 🇺🇸
Ben Bailey, NASA astronaut candidate 🇺🇸
Ayu Yoneda, JAXA astronaut 🇯🇵
Stay tuned for more updates.
23/06/2026
Save the date and join our Open Days 2026 to discover Europe’s space missions from the inside.
19 - 20 Sept. - ESA HQ, Paris 🇫🇷
25 Sept. - ESA ESRIN, Frascati 🇮🇹
26 - 27 Sept. - ESA ESTEC, Noordwijk 🇳🇱
2 Oct. - ESA ESOC, Darmstadt 🇩🇪
3 Oct. - ESA ESAC, Villanueva de la Cañada 🇪🇸
10 Oct. - ESA ECSAT, Harwell 🇬🇧
Registration details and programme coming soon 👇
https://www.esa.int/About_Us/ESA_Open_Days/ESA_Open_Days_2026/ESA_Open_Days_2026_are_coming_mark_your_calendar
22/06/2026
A new season is in!
Yesterday, Earth marked the June solstice when, at 08:24 UTC (10:24 CEST), the Sun reached its most northerly point in the sky.
Just minutes later, our MTG‑I1 satellite captured this view of Earth from 36,000 km above. Pretty far away!
Credits: ESA - EUMETSAT
21/06/2026
Hubble time! 🌌
Hubble Space Telescope has taken a striking high resolution image of the curious planetary nebula NGC 6210. Located about 6 500 light-years away, in the constellation of Hercules, NGC 6210 was discovered in 1825 by the German astronomer Friedrich Georg Wilhelm Struve. Although in a small telescope it appears only as a tiny disc, it is fairly bright.
NGC 6210 is the last gasp of a star slightly less massive than our Sun at the final stage of its life cycle. The multiple shells of material ejected by the dying star form a superposition of structures with different degrees of symmetry, giving NGC 6210 its odd shape. This sharp image shows the inner region of this planetary nebula in unprecedented detail, where the central star is surrounded by a thin, bluish bubble that reveals a delicate filamentary structure. This bubble is superposed onto an asymmetric, reddish gas formation where holes, filaments and pillars are clearly visible.
The life of a star ends when the fuel available to its thermonuclear engine runs out. The estimated lifetime for a Sun-like star is some ten billion years. When the star is about to expire, it becomes unstable and ejects its outer layers, forming a planetary nebula and leaving behind a tiny, but very hot, remnant, known as white dwarf. This compact object, here visible at the centre of the image, cools down and fades very slowly. Stellar evolution theory predicts that our Sun will experience the same fate as NGC 6210 in about five billion years.
This picture was created from images taken with Hubble’s Wide Field Planetary Camera 2 through three filters: the broadband filter F555W (yellow) and the narrowband filters F656N (ionised hydrogen), F658N (ionised nitrogen) and F502N (ionised oxygen). The exposure times were 80 s, 140 s, 800 s and 700 s respectively and the field of view is only about 28 arcseconds across.
📸 ESA NASA's Hubble Space Telescope
19/06/2026
Dust devils galore on Mars 🌪️
Our Mars Express mission visited Mamers Valles, capturing dozens of brief, tornado‑like whirlwinds sweeping dust across the Red Planet.
📸 https://www.esa.int/Science_Exploration/Space_Science/Mars_Express/Dozens_of_dust_devils_hidden_in_plain_sight
German Aerospace Center, DLR Freie Universität Berlin