A comet born around a distant star is now tearing through our solar system at roughly 150,000 miles per hour, and astronomers ...

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

PARIS, France — An interstellar comet that blazed past the Sun last year could be nearly three times older than our Solar System and is unlike anything ever before seen in our cosmic backyard, ...

While life on Mars (and Venus) has long been an obsession for those wondering if we're alone, there are other places in our ...

NASA's New Horizons Spacecraft Just Woke Up From a Long Nap Ahead of Exploring Beyond Pluto ...

In July 2025, astronomers spotted something remarkable passing through our Solar System, an object that had not come from ...

In the latest research, telescope observations of 3I/ATLAS examine its chemical structure and suggest that it took shape in a ...

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

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Estimating ages of specific events is one of the most difficult problems in astrophysics. While we have a precise (and probably accurate) age for the solar system, we do not have precise ages for each ...

Introduction: NASA's solar system exploration paradigm : the first fifty years and a look at the next fifty / James L. Green and Kristen J. Erickson -- Part I. Overview. Exploring the Solar System : ...