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Jun 15

How can we learn more about something we cannot see? Episode 5 of "Euclid and the curious case of the Dark Universe" is looking at the clues the #DarkUniverse

will gather

#ESAEuclid

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🔔 The

#CosmicMystery contest winners are in! 🔔 Find out who they are 👇 and enjoy some creative ways to visualise the components of the Universe! 5⃣% normal matter ~2⃣5⃣% #DarkMatter ~7⃣0⃣% #DarkEnergy #ESAEuclid #DarkUniverse🕵️

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Jun 15

Contest winners announced!

Over 90 participants visualised the #CosmicMystery #ESAEuclid will soon begin to investigate.

From songs, crochets & animations to apparel, paintings & baked goods, the creativity of participants amazed the judges

esa.int/Science_Explor

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Collage of the Euclid Cosmic Mystery winning entries.

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Jun 15

📢 Call for #German #Media: join us on Friday, 23 June from 15:00 CEST for an online #ESAEuclid pre-launch briefing. Click here for registration details 👉 esa.int/Newsroom/Press

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Jun 14

#BepiColombo is getting ready for its 3rd #MercuryFlyby on Monday. Gravity assist flybys and thruster burns will help the mission arrive in Mercury orbit in 2025. Details👉

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BepiColombo

@BepiColombo

Jun 14

#BepiColombo teams are gearing up for the third #MercuryFlyby on 19 June! We'll pass the planet's surface within 240 km altitude at 20:34 BST/21:34 CEST #StayTuned

esa.int/Science_Explor

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Infographic showing top down view of the inner Solar System with BepiColombo passing Mercury (left); Large Mercury with day/night indicated, showing BepiColombo's trajectory and times images will be taken (middle); A list of science instruments that will be active (right)

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Jun 14

📢 #Media representatives are invited to register for the English pre-launch #ESAEuclid press briefing, happening online, on Friday, 23 June, from 14:00 CEST. Media can register here 👉 esa.int/Newsroom/Press Not media? Watch the briefing on #ESAWebTV

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The

Data Challenge is closing in on 18 June 2023. There is still time to contribute to an

@ESA

mission! 🤖🚀Join the competition ariel-datachallenge.space

A woman is seen in front of a blackboard full of images and calculations related to exoplanets.

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Jun 13

🤩 This 👇 looks like a work of art and it is - the art of science! The views below come from 10

sky maps of our galaxy, the #MilkyWay! Explore below what the maps represents. Happy 1st #GaiaDR3 anniversary!

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ESA Gaia

Jun 13

Today marks the first anniversary of #GaiaDR3! Let's celebrate with a highlight of the Gaia Multi-Dimensional #MilkyWay! This image was constructed from 10 Gaia sky maps and highlights the diversity of Gaia info on a large sample of stars in the Milky Way. cosmos.esa.int/web/gaia/iow_2

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The Gaia Multi-Dimensional Milky Way figure is composed of 10 sky maps highlighting different Gaia data products. From top to bottom: 2D stellar motion, stellar ages, star brightness, variable stars, stellar extinction, the interstellar medium, radial velocities, metallicity, 3D stellar motion, star colours. Credits: ESA/Gaia/DPAC - CC BY-SA 3.0 IGO. Aknowledgement: created by Tineke Roegiers, based on different Gaia sky maps created by ESA/Gaia/DPAC - CC BY-SA 3.0 IGO and inspired by NASA's Multiwavelength Milky Way Images.

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Jun 13

📢 #MediaCall Join the in-person #ESAEuclid pre-launch media event in Dutch, on Friday, 16 June at 15:00 CEST! 📍 Space Expo in Noordwijk, Netherlands. Register here 👉 esa.int/Newsroom/Press

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Jun 12

Get ready for the #ESAEuclid launch with the right apparel. Check out the new #CosmicEnergy collection by

@ESASpaceShop

👉esaspaceshop.com/collections/co

Banner with two individuals wearing t-shirts from the new collection, Cosmic Energy.

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Three individuals wearing items from the new collection, Cosmic Energy.

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ESA Webb Telescope

@ESA_Webb

Jun 12

🆕 This Webb view contains more than 20,000 galaxies. Researchers anchored their observations on quasar J0100+2802, an active supermassive black hole that acts like a beacon. Read more: 🔗 esawebb.org/images/EIGER1/ or 🧵👇

$Thousands of tiny galaxies appear across the black expanse of space. The galaxy colours vary. Some of the smallest galaxies are shades of orange and pink. Most galaxies are so distant they appear as single points of light. At the centre is a pink object with six diffraction spikes. This is quasar J0100+2802. It appears slightly smaller than the foreground stars, which appear blue.$

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caught sight of NGC 7292, a dishevelled irregular galaxy! 🌌 Barely visible against the night sky, this elusive hazy wonder might hold clues to the aftermath of supernovae. Find more 👇

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HUBBLE

@HUBBLE_space

Jun 12

Our ESA/Hubble Picture of the Week features the irregular galaxy NGC 7292. This galaxy lacks distinct spiral arms, but its core forms a stretched-out bar, commonly found in spiral galaxies. Read more:

esahubble.org/images/potw232 or

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A galaxy fills up most of the frame from the right. It is fuzzy and diffuse, but made up of numerous tiny stars. In the core, the stars merge into a glowing bar shape. The gas and stars in the galaxy vary between warm and cool colours. They are spread over a large area, the colours mixing like clouds. The glow of the galaxy fades into a black background, with a few stars and small, distant galaxies.

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Jun 9

To solve the #CosmicMystery of the invisible #DarkMatter & exotic #DarkEnergy we need a persistent #DarkUniverse🕵️ #ESAEuclid will scan across the night sky using a 'step-and-stare' method to create the largest & most accurate 3D map of billions of galaxies. 1/4

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Jun 9

🙋‍♀️ Join the #ESAEuclid pre-launch #PressBriefing in Spanish, happening in-person, on 13 June, from 10:30 CEST. 📍European Space Astronomy Centre (ESAC) in Villafranca del Castillo, Madrid, Spain. ✅ You can still register until Monday 👉 esa.int/Newsroom/Press

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Jun 9

Love Space Science and #AI? 🌌🤖There is still time to join the

@ESAArielMission

Data Challenge and contribute to a real

@ESA

mission. Enter here 🔗ariel-datachallenge.space

Artwork showing a woman sitting at a laptop in the middle of what appears to be a jungle from another world.

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The Universe holds a dark secret. Mysterious #DarkMatter & #DarkEnergy are hiding in plain sight. We've never seen them, yet they make up 95% of the entire Universe. To gather clues of their presence & understand their nature we need a #DarkUniverse 🕵️. Enter Euclid.

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📢 Join the pre-launch #MediaBriefing for

, organised in several languages. Details below and 👉 esa.int/Newsroom/Press #MediaCall #CallForMedia #ESAEuclid #DarkUniverse🕵️

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#CallForMedia: join the #ESAEuclid pre-launch #PressBriefings, taking place in several languages. Times in CEST: ES: 13 June 10:30 FR: 13 June 14:30 IT: 14 June 10:30 NL: 16 June 15:00 ENG: 23 June 14:00 Streamed also on #ESAWebTV DE: 23 June 15:00 esa.int/Newsroom/Press

Illustration of Euclid spacecraft against the cosmic web.

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ESA

@esa

#CallForMedia: journalists are invited to pre-launch press briefings for our

mission, available in several languages, taking place in June. Our dark Universe explorer will be launched on a #SpaceX rocket no earlier than 1 July. Registration 👉esa.int/Newsroom/Press

ESA Science and 9 others

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Our #SuspectNo2 for the strange things happening in the Universe is #DarkEnergy. Scientists made the surprising discovery that the Universe is expanding faster than it used to. #DarkEnergy is thought to drive this, but we don't know much about it 🧵👇 #DarkUniverse🕵️

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#ESAGaia observes #exoplanets using three superpowers: 🌞🪐🔭photometry 🍮💫astrometry 🌈spectroscopy. With #GaiaDR3 over 110 exoplanet candidates were identified, many more studied further, while also learning more about their host stars.

Infographic showing a planet passing in front if its star. A line showing the level of brighteness displays a dip when this happens.

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#ESAGaia is creating a precise 3D map of more than a thousand million stars throughout our #MilkyWay galaxy & beyond. In doing so,

can detect Jupiter-sized planets beyond our Solar System, bringing complementary observations to ESA's fleet of #ExoplanetExplorers.

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Our

mission confirmed the existence of 4 warm #exoplanets orbiting 4 stars in our Milky Way. These "mini-Neptunes" have sizes between Earth and Neptune and orbit their stars closer than Mercury our Sun 🤔 Find out why they are mysterious 👉 esa.int/ESA_Multimedia

Infographic explaining the new Cheops result. The text on the infographic reads: "ESA's Cheops confirmed the existence of four warm exoplanets with sizes between Earth and Neptune, orbiting their stars closer than Mercury our Sun. These so-called mini-Neptunes are unlike any planet in our Solar System and provide a 'missing link' that is not yet understood. Mini-Neptunes are among the most common types of planets known, and astronomers are starting to find more and more orbiting bright stars."
On the left part of the infographic the four stars are shown, with an example star on top. The four mini-Neptunes are orbiting these stars, and their orbit in days is shown with a "Hot Jupiter" exoplanet as a reference. The mini-Neptunes are shown in blue-grey and the Hot Jupiter in orange. On the right side of the infographic, possible inner structures are shown for mini-Neptune planets. They all contain an iron core, a rocky mantle. The outer layers can consist of water, hydrogen and/or helium.

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Jun 7

#ICYMI Image highlights from #MarsLIVE last week! #ExploreFarther👇

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ESA Operations

@esaoperations

Jun 7

First Mars livestream: the movie. From polar ice caps to martian clouds, all made possible by a very unique orbital opportunity despite rain in Spain doing its best to spoil the view. It was the most real-time, motion view of Mars, ever. #MarsLIVE

esa.int/ESA_Multimedia

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ESA Operations

@esaoperations

Jun 5

Uh oh, what's the (dark) matter with

? #Simulations continue at #MissionControl: the Euclid (simulator) has had multiple thruster failures and most recently a (fake!) bomb threat saw teams evacuate the Main Control Room...😨👉esa.int/Enabling_Suppo 📸📸📸ESA/J. Mai

DLR - English and 2 others

HUBBLE

@HUBBLE_space

Jun 5

Our ESA/Hubble Picture of the Week features the jellyfish galaxy JO206 with its colourful star-forming disc surrounded by a pale, luminous cloud of dust. 🌌✨ Read here: 🔗 esahubble.org/images/potw232 or 🧵👇

A spiral galaxy that is tilted partially toward us. Its inner disc is bright and colourful, with bluish and reddish spots of star formation throughout the arms. An outer disc of pale, dim dust surrounds it. It has many arms, which are being pulled away from the disc, down and to the right. They stretch into long, faint trails that cross the image. The background is dark and mostly empty, with three bright stars.

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Zooming in, there’s also a close-up of Valles Marineris, the biggest and most dramatic canyon in the #SolarSystem. This system is truly colossal: a massive 4000-km scar on the face of #Mars that’s 10x longer and 5x deeper than Earth's Grand Canyon 🤯 👉 esa.int/ESA_Multimedia

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Mars is famous for its reddish colour, but much of the planet looks rather dark and blue-toned here. This is because the image enhances local colour and contrast, to highlight differences in colour and composition across Mars' surface 🌈 #ExploreFarther #SpaceScience

To mark 20 years of #MarsExpress, here's #Mars as never seen before 🤯🔴 It’s hard to take a bad picture of the #RedPlanet, but this one is truly wonderful. Mars Express has studied this fascinating world for two decades now – and counting! More 👉 esa.int/Science_Explor

This image shows the globe of Mars set against a dark background. The disc of the planet features yellow, orange, blue and green patches, all with an overall muted grey hue, representing the varying composition of the surface.

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We’ve hit the big 2-0! 🎉🍾 Congratulations to #MarsExpress on reaching 20 years in space – and counting! The orbiter has been hugely productive across its lifetime, and has truly revolutionised our knowledge of #Mars. More on the mission's achievements: esa.int/ESA_Multimedia

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ESA Operations

@esaoperations

Jun 2

For the #20thAnniversary of #MarsExpress, join us today at 18:00 CEST for #MarsLIVE 🔜 youtube.com/watch?v=4qyVNq 'MEX' is 20 - so is its

@esamarswebcam

! The camera is not the *best*, 1st built for engineering, but let's see what's up at the Red Planet in this first livestream!

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ESA Gaia

May 26

#GaiaFPR coming up! #SaveTheDate: 10 October 2023 Gaia will publish its focused product release with 5 dedicated data products! More details on Gaia's upcoming releases: cosmos.esa.int/web/gaia/relea

Jun 1

Are we getting closer to understanding #DarkEnergy? At some point in cosmic history something happened that changed the entire course of the Universe. #ESAEuclid is about to start an investigation into dark energy & the role it played. #DarkUniverse 🕵️ #SuspectNo2

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Hubble Helps Discover a New Type of Planet Largely Composed of Water

May 31

Kepler-138c and Kepler-138d have roughly half of Earth’s density, which means they cannot be solid rock. They are considered a new class of “water-planet”. Read more here: esahubble.org/news/heic2215/ 3/3

esahubble.org

Researchers have found evidence for the existence of a new type of planet they have called a “water world,” where water makes up a large fraction of the entire planet. These worlds, discovered in a...

ExoMars orbiter

@ESA_TGO

May 31

New science alert! I’ve spotted something weird in Mars' atmosphere! 🔴🛰️🔍 Turns out that #Mars' carbon monoxide is ‘lighter’ than it should be. But why? Could biology be to blame… or is it all a matter of chemistry? 🤔 ☀️ 👉 esa.int/Science_Explor #ExploreFarther [1/2]

Infographic showing how oddly ‘light’ carbon monoxide forms in Mars’ atmosphere. It shows carbon dioxide molecules being split by sunlight to form carbon monoxide and oxygen, with an illustration of Mars' red-hued surface below.

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May 30

Our #SuspectNo1 for the strange things happening in the Universe is #DarkMatter. If #DarkMatter is made of particles, we cannot see them because they do not seem to absorb, reflect or emit light. So how can we find Dark Matter? 🧵👇 #DarkUniverse 🕵️

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HUBBLE

@HUBBLE_space

May 29

Our ESA/Hubble Picture of the Week features the spiral galaxy NGC 298 🌌 located around 89 million light-years away in the constellation Cetus. Read more: 🔗 esahubble.org/images/potw232 or 👇

A spiral galaxy. It is tilted diagonally, and slightly towards the viewer, making its core and disc separately visible. Its disc is speckled by small stars, has threads of dark reddish dust and bubbles of bright, glowing gas. The core shines brightly in a warmer colour. Several tiny stars and small galaxies are included in the black background.

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The density of Kepler-138c and Kepler-138d is the property that helped scientists conclude they are water worlds. Both planets are twice Earth’s mass but have roughly this much of Earth’s density 2/2

half
38.8%
one third
43.9%
one tenth
17.3%

98 votesFinal results

⏳Time for a quiz! If we needed more proof for the diversity of #exoplanets out there,

@Hubble_space

helped identify a new type of planet largely composed of water. 1/2

Illustration of three planets and their star on the black background of space speckled with dots of different colors. The planets are various sizes, indicating different distances from the viewer and from the star. The largest, foreground planet, is at the upper right, and is grayish white with bands of clouds.

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#Hubble has been instrumental in studying #exoplanets, but it has also helped to detect them. Hubble took the first visible light image of an exoplanet, Fomalhaut b, and also found compelling evidence for the first exomoon. #ExoplanetExplorers

Planet Fomalhaut b orbiting its parent star, Fomalhaut. A small white box at lower right pinpoints the planet's location. Fomalhaut b has carved a path along the inner edge of a vast, dusty debris ring encircling Fomalhaut.

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Over the years

has made significant contributions to #exoplanet research. #Hubble made the 1st detection of an atmosphere around an exoplanet and was used to analyse the atmosphere of a rocky super-Earth exoplanet for the 1st time. 1/2 #ExoplanetExplorers

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