Curiosity has found a vast sea of Martian polygons that may reveal how water and climate once reshaped the Red Planet. NASA’s Curiosity rover has encountered an enormous field of honeycomb-shaped fractures while climbing through a Martian valley known as “Valle Grande.” Each geometric feature measures roughly 1.5 to 3 inches (4 to 8 centimeters) [...]

Sentinel-6 satellite data shows strengthening warm-water waves in the Pacific, pointing to the likely arrival of El Niño and its global weather impacts later in 2026. Several months before an El Niño develops, large waves of warmer, elevated water travel eastward across the Pacific Ocean. Satellite observations in 2026 have detected several of these waves. [...]

A disappearing Venus, a planet parade, and the start of summer make June a must-see month for skywatchers. June brings several notable skywatching events, including a close meeting between Venus and Jupiter, a rare occasion when the Moon moves in front of Venus, the arrival of astronomical summer, and the return of favorite deep-sky sights. [...]