Triton returns to the edge of the solar system in search of answers—where did Neptune’s moons really come from? What secrets is Neptune hiding? A cosmic story of capture, identity, and moon-sized ...

Now just 1.7° apart, Saturn and Neptune are visible in Pisces, some 15° high by 4 A.M. Catch them in the early-morning ...

Strawberry moon will be at full illumination June 11, the latest of the full moons tied to Native American tradition.

With an atmosphere, by mass, of primarily hydrogen (76 per cent) and helium (24 per cent), and by volume of 89 per cent ...

Tianwen, which means "questions to heaven," is the name given to China's program of robotic Solar System exploration. Tianwen ...

The small world was found during a search for the hypothetical Planet Nine, and astronomers say the next time it will reach ...

U.S. astronomers hunting for "Planet Nine" have instead stumbled on what appears to be a new dwarf planet in the solar system ...

Scientists are analysing the smells of space – from the aroma onboard space stations to planets hundreds of light years away ...

But what is the science behind extraterrestrial life? Is it possible that humans will ever experience "first contact" with an ...

Of the roughly 6,000 exoplanets we’ve discovered, a significant number are in the apparent habitable zones of their stars.

For instance, Neptune migrated outward, switching places with Uranus, and pushed a lot of the small, icy bodies into the ...