Data from the Mars Express orbiter has been used to create a visualization of "a vast system of deep and steep valleys that ...

Travel to the event horizon in this amazing new black hole visualization from NASA's Goddard Space Flight Center. Credit: ...

The southern night sky at 8 p.m. local time on January 2, 2026 shows the Full Moon and Jupiter in the constellation Gemini, ...

A colossal Martian volcano defies everything we know about planetary geology. Hidden clues beneath its frozen summit hint at ...

It is with a heavy heart that I announce that NASA Earth Science Communications has directed The Earth Observer to conduct an ...

We're taking a look back at 10 of the most memorable space moments from 2025, as we leap into a new year that's sure to be ...