Astronomers have long suspected that an enormous, unseen planet is hiding somewhere far beyond Neptune, quietly shaping the ...

Webb Telescope Captures Its First Direct Images of Carbon Dioxide Outside Solar System Mar. 17, 2025 — The James Webb Space Telescope has captured its first direct images of carbon dioxide in a ...

The NASA/ESA Solar Orbiter recently recorded the highest-ever concentration of a rare helium isotope (3He) emitted from the ...

A new model has been developed to simulate interstellar activity within our solar system and the nearby Alpha Centauri system. Interstellar material has been found within our solar system, but ...

Measurements have been taken before of this background, but further out in the Solar System makes picking apart the data a little easier. In 2023, when New Horizons was around 57 AU from the Sun ...

So exactly how many solar system moons have we found? The answer, it turns out, depends on your definition of a moon. But this is likely just "the tip of the iceberg," Edward Ashton, an astronomer ...

The discovery of salty mineral evaporites on Ryugu indicates that watery environments may have been widespread in the early ...