Space looks empty until you try to cross it. Far beyond Pluto, where sunlight is faint and the planets are long behind, ...

For obvious reasons, the Sun’s influence weakens as you get closer to the edge of the solar system. But things might be a lot ...

A comet born around another star crossed into our solar system, accelerated to roughly 153,000 miles per hour at its closest ...

Vera C. Rubin Observatory discoveries announced at this week’s AAS 248 include 380 trans-Neptunian objects found in six weeks — adding 8 percent to humanity’s 30-year outer solar system census — plus ...

Memories of solar impact from seven ESA spacecraft have been collected and analyzed in a first-of-its-kind study to better understand the radiation environment in space. Huge amounts of engineering ...