#PPOD: Saturn's fourth-largest moon, Dione, can be seen through the haze of the planet's largest moon, Titan, in this view of the two, taken by NASA's Cassini spacecraft on December 22, 2011, with the planet and its rings in the background. The north polar hood is visible on Titan here, appearing as a detached layer at the top of the moon. Credit: NASA/JPL-Caltech/Space Science Institute
#PPOD: When they form, impact craters dig up material from below the surface and throw it outwards into what geologists call an ejecta blanket. The fastest ejected material travels the furthest, so material from different depths can end up at different distances from the crater.
This HiRISE image shows a pedestal crater in Arcadia Planitia, Mars, with material of varying brightness and color at different distances from the crater.
#PPOD: This image from the Copernicus Sentinel-1 mission shows us the maritime traffic passing through the Øresund Strait in 2025. The 118-km-long Øresund Strait (also known as the Sound) separates Denmark to the west from Sweden to the east and links the Baltic Sea to the North Sea, which makes it one of the busiest waterways in the world.
In this image, ships appear as bright, sparkly dots in the dark waters of the strait.
#PPOD: Early-morning sunlight illuminates the western wall of this unnamed crater, casting deep shadows on the ground and within the crater. The image was taken on August 30, 2023, by LROC (Lunar Reconnaissance Orbiter Camera). LROC is a system of three cameras and one of the seven instruments aboard NASA’s LRO (Lunar Reconnaissance Orbiter) mission, which launched in June 2009 and continues in orbit around the Moon. Credit: NASA’s Goddard Space Flight Center/Intuitive Machines
#PPOD: Covered in heath, the solitary rocky hill known as Slieve Gullion rises above the farmland of Northern Ireland in this true-color Landsat image from May 24, 2001. According to Irish mythology, hunter and warrior Finn McCool bathed in the lake on Slieve Gullion and emerged decades older. However, we don’t need a dip in the lake to move through time. A glance at the landscape reveals millions of years of history.
#PPOD: On June 25, 2023, NASA’s JWST turned to the famed ringed world Saturn for its first near-infrared observations of the planet. Saturn itself appears extremely dark at this infrared wavelength observed by the telescope, as methane gas absorbs almost all of the sunlight falling on the atmosphere. However, the icy rings remain relatively bright, resulting in Saturn's unusual appearance in the JWST image.
Wünsche allen auf der #PinkPonyOfDeath in Mainz allen erdenklichen Spaß! Ich hab gestern kurzfristig aussteigen müssen, weil ich mir irgend eine Erkältung* eingefangen habe und Hals habe. Der Rachen schmerzt, aber die #PPOD zu verpassen, schmerzt mehr. Wir sehen uns zur #LoFiCon! 🤞
* haha, Autocorrect..
#PPOD: In this image from the High Resolution Imaging Science Experiment (HiRISE) camera on NASA's Mars Reconnaissance Orbiter, the dark branched features in the floor of Antoniadi Crater look like giant ferns, or fern casts. However, these ferns would be several miles in size and composed of rough, rocky material. Credit: NASA/JPL-Caltech/University of Arizona
Learn more: https://science.nasa.gov/resource/branched-features-on-the-floor-of-antoniadi-crater/
Da hatte ich extra einen durchgehenden Zug von mir bis Frankfurt Flughafen gebucht, um das Risiko zu minimieren. Jetzt ist er 30min vor Abfahrt gestrichen worden. Yay!
Also wird auch die Hinfahrt zur #PinkPonyofDeathCon schon ein Abenteuer, aber dafür ohne Zugbindung
#PPOD: This stunning snapshot, taken with ESO’s Very Large Telescope (VLT), reveals the stars and gas surrounding an invisible giant — a supermassive black hole, located some 27,000 light-years away, at the heart of our Milky Way. This is a hugely dynamic environment, with stars and gas clouds hurtling by the black hole at dramatic speeds. Credit: ESO/D. Ribeiro for the MPE GC team
SETI Institute
D3
Alex aka Mumintroll