NASA's New Horizons found the solar wind slows as it nears interstellar space, helping improve models of the solar system's ...

PARIS, France — An interstellar comet that blazed past the Sun last year could be nearly three times older than our Solar ...

As the United States prepares to celebrate its 250th anniversary, the history of the solar system tells its own story of ...

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 ...

Our latest known interstellar visitor, comet 3I/ATLAS, is currently making its way out of the solar system, after passing by ...

The findings surprised researchers, who used the comet's composition to better understand the environment in which it formed.

Interstellar comet 3I/ATLAS may be older than our solar system, offering a rare glimpse into the early galaxy.

Along with other recent discoveries, the new finding from Perseverance boosts the case that Mars once hosted conditions that ...

A new Southwest Research Institute (SwRI) study based on data from NASA's New Horizons spacecraft has uncovered insights into ...

A Jupiter-size exoplanet orbiting a dead star baffled astronomers. But the planet named WD 1856 b could preview the fate of ...