President Donald Trump’s fiscal 2026 budget request, if approved by Congress, would kill many of NASA’s plans for robotic ...

Scientists say it’s important to research geoengineering – large-scale attempts to cool the planet to fight climate change – ...

For the dwarf planet candidate, one trip around the sun takes over 24,000 years. Its orbit challenges a proposed path for a hypothetical Planet Nine.

It had not been thought possible that such tiny, weak stars could provide the conditions needed to form and host huge planets ...

Dozens of NASA's missions to explore the cosmos could be in jeopardy under a budget proposal from the Trump administration.

OF201 is incredibly lightweight on a cosmic scale. Scientists estimate its mass is about 20,000 times less than Earth's and ...

Discovery of 2017OF201, a large trans-Neptune Object, challenges previous beliefs about the Kuiper Belt and hints at the existence of a theoretical Planet Nine.

Scientists have identified an object about 435 miles (700 km) wide inhabiting the frigid outer reaches of our solar system that might qualify as a dwarf planet, spotting it as it travels on a highly ...

Use precise geolocation data. Actively scan device characteristics for identification. Store and/or access information on a ...

A cloud of collapsing gas created our Sun, the first thing to form in our solar system. This happened about 4½ billion years ago. Then the planets began to emerge, as the billions of particles of gas ...

Are planets in the solar system that are closer to the Sun older than the ones further away? – Gavriel, age 10, Paducah, Kentucky A cloud of collapsing gas created our Sun, the first thing to ...

Planet Nine, also known Planet X, was first brought up as a possibility ... The presence of this planet would explain a number of quirks in our Solar System, but there is significant debate ...