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

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

On a clear night, it dominates the sky, bright enough to cast shadows and large enough for dark patches and surface features ...

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

The Hubble Space Telescope time-lapse captured footage of Jupiter, Saturn, Uranus and Neptune. Credit: SCIENCE: NASA, ESA, ...

The outer solar system once seemed like a quiet backwater. But a glut of tiny, strange moons with unruly orbits are coming into view, revealing hints of a surprising past – and the origin of Saturn's ...

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

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

The solar system is embedded within the expanding solar atmosphere, i.e., the solar wind, a tenuous plasma, consisting mostly of protons and electrons, continuously emitted by the Sun. Each body that ...

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 : ...