A low-density, puffy planet orbiting relatively far from a young star in a nearly perpendicular orbit. What's going on?

Astronomers have yet to find irrefutable proof for any natural satellites of exoplanets—so-called exomoons—but as ...

The James Webb Telescope measured a potential moon-forming disk encircling an exoplanet, NASA recently announced, inviting researchers to observe and study moon formation as it happens, while ...

Five years of imagery from NASA's Transiting Exoplanet Survey Satellite (TESS) have been stitched together to create an ...

Have you ever catch yourself smiling when you see a baby photo? Maybe it's a newborn snoozing peacefully or a little face ...

A pair of Sydney Ph.D. students helped sharpen the view of humanity's most powerful space observatory—without leaving Earth.

Uranus and Neptune have been called the “ice giants” for decades. But in new research, that nickname might be more a misnomer ...