Neptune’s oddball moon Nereid may be the sole remnant of an earlier system, formed near the planet rather than being pulled in from afar.

When we picture the moon we think of its changing phases — crescent, half, full and new. But throughout the course of its orbit its apparent size also changes. This is because the moon orbits the ...

The hits from Firefly Aerospace’s Blue Ghost mission to the moon keep coming, as just days after sharing gorgeous images of Earth seen from space, the spacecraft has now captured incredible footage of ...