It took over nine years for New Horizons to reach Pluto after blasting off atop an Atlas 5 rocket on Jan. 19, 2006. After ...

It was one of the most ambitious missions for NASA since the turn of the century, with photos reshaping what scientists know ...

The size of the Solar System and the Universe is truly beyond our comprehension. When we think of the vastness of space, we ...

Over the past decade, researchers have been puzzling through Pluto’s mysteries. Meanwhile, the New Horizons probe heads for interstellar space.

Scientists want to study a distant world in the solar system that is classified as a dwarf planet. But some experts think it ...

Sedna, a distant dwarf planet three-quarters the size of Pluto, is inching toward the brightest star in our sky — and in 2076 ...

Astronomers have discovered yet another alien visitor to the Solar System.

While for most people Pluto is the most distant planet in the Solar System, things get a lot more fuzzy once you pass Neptune ...

Pluto once held its place proudly as the ninth planet in our solar system,a distant, icy world on the edge of the cosmic frontier. But in 2006, everything changed. This in-depth explainer unpacks the ...

The awe-inspiring distances of the cosmos are hard to visualise, so how can we be certain we are measuring them correctly?

Both planets will spend the summer portion of their retrograde in Aries, then slip back into Pisces this fall.

The Senate appropriations committee initially voted in favor of a bill rejecting Trump's NASA budget cuts, but discussions ...