A huge geological structure on Mars resembling a bathtub ring may be evidence of an ocean that once covered a third of the Red Planet.
…
The Artemis 2 astronauts captured a unique image of the moon’s “dark side” during their historic April 2026 flyby.
SpaceX will launch Europe’s life-hunting Rosalind Franklin rover toward Mars in 2028 — but not aboard the company’s Starship megarocket.
…
The size of waves on alien worlds will depend as much on the characteristics of the liquid as well as the gravity.
The interstellar comet 3I/ATLAS changed significantly as it flew by the sun last fall, astronomers have discovered.
The Jupiter-bound spacecraft JUICE spotted the interstellar invader comet 3I/ATLAS spraying enough water into space to fill 70 swimming pools a day.
…
“In the inner corona, a region very difficult to observe, we saw slow solar wind gusts moving three to four times faster than expected.”
…
New research shows that craters near the moon’s south pole that have been in permanent shadow the longest are more likely to contain the most water ice.
…
A rare stargazing spectacle will unfold on Friday, April 13, 2029, as the asteroid Apophis passes closer than satellites over Europe and Africa in a true once-in-a-lifetime event.
…
A rare long-period comet is here — here’s how to find comet C/2025 R3 (PanSTARRS) before sunrise this April, with key dates, viewing tips and the best mornings to look.
…