Can we foresee the risk of an asteroid impact on Earth? What can we do about it? @TEDxAix talk by Ian Carnelli https://t.co/eucpSX9w6R — ESA (@esa) July 23, 2017

#OTD 23 July 2009 #Latvia becomes 2nd Baltic country to sign Cooperation Agreement with #ESA https://t.co/InvxPetslp pic.twitter.com/wi98wwTcbD — ESA space history (@ESA_History) July 23, 2017

No promises to hand over the keys though! — ESA (@esa) July 23, 2017

The new Google @StreetView was filmed by @thom_astro and we have several other virtual tours of @Space_Station https://t.co/3SxQKTlA80 — ESA (@esa) July 23, 2017

Who's your friend @astro_paolo? https://t.co/tJDeGoCVYp pic.twitter.com/lZHDgNmzVg — ESA (@esa) July 23, 2017

#MirrorMirror… What does #3Dprinting have to do with #Sentinel5P's #TROPOMI instrument? Follow the link to discover:https://t.co/68UzecQJAW pic.twitter.com/EeMwEWjeZY — ESA EarthObservation (@ESA_EO) July 23, 2017

Mercury had never been seen like this before. In 2008, the robotic MESSENGER spacecraft buzzed past Mercury for the second time and imaged terrain mapped previously only by comparatively crude […]

Well yoga poses sure are easier without gravity. Of course @AstroPeggy can probably do this on the ground. 😀 She’s a #SpaceNinja. pic.twitter.com/zIpZnbPi1h — Jack Fischer (@Astro2fish) July 22, 2017