It's time for the #ESAquiz! ⠀⠀⠀⠀⠀⠀ ⠀⠀⠀⠀⠀⠀⠀⠀ Do you know what are this colourful structures?⠀⠀⠀⠀ ⠀⠀⠀⠀⠀⠀⠀⠀ Write your answers in the comment section 👇 and stay tuned to our @instagram Story for the answer and a shout out!⠀ • 📸 @europeanspaceagency - Agustin Fernandez-Leon
⚠️ To all the mountaineers around! • #Repost@esa_earth ・・・ The Copernicus Sentinel-2A satellite takes us over Mount Triglav in Slovenia🏔️! At 2800 m above sea level, the mountain is the highest in the country. . . Have you got your 🎿 ready ❄️🌨️? 📸 contains modified @copernicus_eu Sentinel data (2018), processed by @europeanspaceagency, @creativecommons CC BY-SA 3.0 IGO
A special visitor is crossing the sky‼️☄️ • Comet 46P/Wirtanen, sighted with telescopes and binoculars in recent weeks, is on the way to its closest approach to Earth this weekend, when it might become visible to the naked eye.
Go to our @instagram Story to learn more and if you happen to capture it, share images or videos with our Instagram community: @yourESA 📸 @europeanspaceagency / ESAC Astronomy Club / A. De Burgos Sierra
It's time to comeback home! 👨🚀 • @astro_alex_esa will return to Earth alongside @NASA astronaut Serena Auñón-Chancellor and @roscosmosofficial cosmonaut Sergei Prokopiev on 20 December. After more than six months living and working on the @iss, their Soyuz is expected to touch down in Kazakhstan at around 05:06 GMT. • Go to our @instagram Story to learn more • 📸 @europeanspaceagency / @nasa
💥 Every few hours observing the Moon, our ‘NELIOTA’ project discovers a brilliant flash of light across its surface – the result of an object hurtling through space and striking our unprotected rocky neighbour at vast speed. Based at the Kryoneri telescope of the National Observatory of Athens, this important project is now being extended to January 2021. • Go to our @instagram Story to learn more. • 📹 NELIOTA project
Here's an update on #BepiColombo 🌑⠀⠀⠀ ⠀⠀⠀ The spacecraft began its seven year journey by unfurling antennas and solar arrays, taking a few selfies and deploying a three metre magnetometer boom. BepiColombo, a joint mission between us and @jaxajp, will soon engage its solar propulsion engine but meanwhile scientists are busy preparing for its arrival in 2025. ⠀⠀ ⠀⠀⠀ 📹 @europeanspaceagency
Do you want to build a snowman? ⛄️ • Sometimes it’s all about perspective. This very convincing image of a conjoined moon masquerading as a snowman is actually two separate Saturnian moons – Dione and Rhea – taken from such an angle by the international Cassini spacecraft that they appear as one.
Hubble Time! 🌌⠀⠀⠀ ⠀⠀⠀ This image, reveals thousands of globular clusters lying at the core of a galaxy cluster. It was created by a Hubble survey that drew on data from three of the telescope’s separate observing programmes to explore the centre of the Coma cluster, a huge gathering of over 1000 galaxies, about 320 million light-years away, all bound together by gravity.. ⠀⠀⠀ Go to out @instagram Story to learn more.⠀⠀⠀ ⠀⠀⠀ 📸 @europeanspaceagency/ @hubbleesa & @NASA, @creativecommons CC BY 4.0, J. Mack, and J. Madrid et al
Look! There's an antenna! 📡 • In the last week of November, following a reconfiguration of the antenna pointing mechanism, a 2.8 degree pointing error of the antenna was noticed. After careful investigation, the anomaly was traced back to a setting in the antenna pointing mechanism electronics, which has subsequently been rectified. Investigating the issue required a range of special movements, which allowed one of the monitoring cameras to capture the first in-flight images of the front side of the antenna as its orientation changed. • Go to our @instagram Story to learn more. • 📹 @europeanspaceagency BepiColombo/MTM, @creativecommons CC BY-SA 3.0 IGO
🚧👷👷♀️🚧 • About 600 people are currently employed in the construction of the @Ariane6 launch pad, which is 28.5 metres deep and 200 metres wide, formed with enough concrete to fill 67 Olympic sized swimming pools. • The 8200 tonne mobile gantry that will store and protect Ariane 6 until it is retracted five hours before each launch starting in 2020, is currently being erected. • 📸 @europeanspaceagency / @cnes_france - G. Berthier
Living on Earth it is easy to find it rich, vast, and powerful. 🌎🌍🌏 • However, seeing Earth suspended in the void of space with just a thin protective layer shielding all its inhabitants from cosmic radiation, extreme temperatures, and flying projectiles, our mothership suddenly seems so fragile.
This cognitive shift is known as the overview effect that many astronauts report during and after spaceflight. It is an awareness brought on by countless hours of Earth viewing and the photographs taken, like this image captured by our astronaut @astro_alex_esa from the @iss in November 2018, that shows just how thin Earth’s shield, our atmosphere, really is. 📸 @europeanspaceagency / @Nasa