Water flowed on Mars longer than previously thought… by a billion years! 😮 The findings come from Mars Reconnaissance Orbiter data that indicates Martian surface water left behind salt minerals as recently as 2 billion years ago. https://t.co/7heAUxxmsTpic.twitter.com/Ho6HefSV88
Material falling toward a black hole can sometimes get redirected by magnetic fields into outflowing gas. A new Hubble finding in a dwarf galaxy shows a stream of gas from a black hole triggering star formation: https://t.co/rkqNCJIVs4pic.twitter.com/AlomqLDog2
On Monday, 24 January, the #Webb team plans to instruct the observatory to complete a final correction burn that will place it into its desired orbit at the second Sun-Earth Lagrange point, or "L2" (orbit animation 👇). Details: https://t.co/lhrUXDhyra 📷:@NASAGoddardpic.twitter.com/XbKzW0Svrk
Nous vivons dans une « bulle » d’environ 1000 années-lumière de large, à la surface de laquelle de nouvelles étoiles sont en train de naître. #Astronomie#Espacehttps://t.co/jY3r3Lfsd3