Are there liquid water brines on Mars? New study casts doubt

View larger. | An example of weird, dark streaks called recurring slope lineae on the slopes of Mars’ Horowitz crater. Do liquid water brines form these streaks? A new study suggested brines on Mars are less likely to occur than scientists thought. Image via NASA/ JPL-Caltech/ University of Arizona. 2025 EarthSky lunar calendar is available … Read more

Top events not to miss

View at EarthSky Community Photos. | Richard Witkowski captured the aurora storm on May 10-11, 2024, from Indiana Dunes National Park. It was surely one of the best night sky events of this past year. Thanks, Richard! So how about 2025? We can’t predict the next auroral display, but we can provide a preview of … Read more

15 must-see naked-eye skywatching events in 2025

In 2025, skywatchers can look forward to a series of stunning celestial events, including a bright Mars occulted by the Wolf Moon, Venus at its brightest, a spectacular “devil’s horns” solar eclipse, and plenty of meteor showers peaking under moonless night skies. Although many of these events are visible to the naked eye, a nice … Read more

Starship, Europa Clipper and more: The top 10 spaceflight stories of 2024

Historians will look back on 2024 as a special year for spaceflight. From SpaceX plucking a huge rocket out of the sky to the first privately funded spacewalk to the launch of a $5 billion mission to study an ice-covered ocean moon, this year held many record-breaking achievements and advances that brought humanity ever closer … Read more

NASA is Considering Designs and Simulations to Prepare Astronauts for Lighting Conditions Around the Lunar South Pole

In the coming years, NASA and other space agencies will send humans back to the Moon for the first time since the Apollo Era—this time to stay! To maximize line-of-sight communication with Earth, solar visibility, and access to water ice, NASA, the ESA, and China have selected the Lunar South Pole (LSP) as the location … Read more