INFORMATION

The spent upper stage from a SpaceX Falcon 9 rocket has struck the Moon, illustrating the hazard posed by debris in cislunar space. This problem will increase as launches to orbit and to the Moon become more common in the coming years. from Universe Today https://ift.tt/AoxS4Ob via IFTTT

Homer Dávila Gutierrez, director of SKYCR.ORG, has identified a gravitational arc candidate in the galaxy cluster MACS J0308.9+2645 from public data from the James Webb Space Telescope. The object had not been previously reported and is located at a photometric redshift close to 4.4. The preprint is available on arXiv and the manuscript is under review in Publications of the Astronomical Society of Japan. from Universe Today https://ift.tt/8M2PbNs via IFTTT

It’s almost show time. We’re just a few days away now, from the only total solar eclipse of 2026. While eclipses are a surety as the celestial gears of the Universe grind on, there are always a few unknowns leading up to eclipse day. We wrote a recent guide to the upcoming total solar eclipse featuring totality across Greenland, Iceland, the North Atlantic and Spain on August 12th. As that date is now only a few days away, it’s a good time to look at prospects and resources to have at the ready leading up to eclipse day. from Universe Today https://ift.tt/0qJYktQ via IFTTT

As dwarf planet Pluto moves along in its distant, high-obliquity 248-year orbit, its atmosphere is changing. That's because it's beginning to travel through colder, darker parts of the outer Solar System for the next 88 years. As a consequence, the mostly-nitrogen atmosphere is expected to grow gradually thinner and eventually freeze out over the coming decades. When that happens, the atmosphere will shrink. from Universe Today https://ift.tt/3WSgrDj via IFTTT

Rover data from more than 20 years ago has revealed clues to the existence of liquid water on ancient Mars. The NASA Spirit Rover carried a specialized instrument called a Mössbauer Spectrometer that performed mineralogical analyses of soil, rock, and dust on the surface of the Red Planet at Gusev Crater. Individual measurements didn't always indicate definitive proof of water, but when scientist Paolo de Souza of Edith Cowan University in Australia examined years' worth of measurements together, a definite pattern began to show up in the existence of minerals that could only exist in the presence of water. His analysis shows that Mars used to sport a lot more water than scientists expected and that the data showing its existence was in the data all along. from Universe Today https://ift.tt/w9EgXxD via IFTTT

Simulations conducted by researchers at ETH Zurich suggest a strong likelihood that Venus’s rift valleys are still geologically active rather than being mere relics of a bygone era, as had been previously believed. This finding reshapes our understanding of Earth’s sister planet and will influence future missions to Venus. from Universe Today https://ift.tt/Cp1WQql via IFTTT