Some astronomers think there’s a giant, undiscovered planet lurking in our outer solar system that they call Planet Nine. If it exists, it could be five to 10 times larger than the Earth and orbit ...

Astronomers have observed an object that originated from beyond our solar system, thought to be an interstellar comet, ...

Science Through Shadows (STS) is a NASA-funded Science Activation Project. STS seeks to increase astronomy literacy and inform people about NASA’s diverse range of projects (not just Mars and ...

A new interstellar object, A11pl3Z, has been discovered in our solar system, marking the third such object to be observed. It was first discovered zipping near the sun this fall.

The project resulted in countless discoveries regarding the star we orbit and how it influences our solar system. Using various tools, NASA captured a photo every 0.75 seconds over the decade-long ...

Outer solar system scientists have prepared three mission concept ... of mission that NASA calls flagship — projects like the Mars rovers ... daring dreams in outer solar system science.

Every year or two, the solar system lines up just right, ... “NASA’s Radio JOVE Citizen Science Project allows me to further explore my lifelong interest in astronomy,” said John Cox, ...

A fascinating glimpse into how a solar system like our own is born has been revealed with the detection of planet-forming ...

NASA confirms the arrival of 3I/ATLAS, the third interstellar object. The ATLAS project spotted it in June 2025. Its speed ...

Launched on September 5th, 1977, the spacecraft reached Neptune, the outer sentinel of the Solar System, over a decade later. An artist's impression of the Voyager 1 space probe flying past Saturn ...