The location of the solar system's outer boundary is a point of contention among astronomers. There are three possible candidates, which "all have merit." But which one is best?

An illustration of the solar system (not to scale), including the sun, inner rocky planets, asteroid belt, the outer gassy planets, and—beyond Neptune—the Kuiper belt and the Oort cloud.

Many smaller outer solar system objects appear to have orbits that are aligned in certain mysterious ways; the simplest explanation is that their motions are influenced by another, as-yet-unseen ...

Researchers in Europe are investigating semi-transparent solar windows, applying microfabrication technniques to both CIGS and perovskite devices, to overcome the view-impeding properties of earlier ...

Now, however, Pluto and that part of the solar system has moved away from the backdrop of the Milky Way into a sparser region of the night sky. With its Hyper Suprime-Cam (HSC), Subaru has ...

The 'GP MICRO-D .Cell' is a fully automated contactless measuring system developed by GP Solar that inspects cells for material defects and then rejects any that are faulty. This is the company's ...

MT. LAUREL, NJ, April 21, 2025--Define Solar, a leading solar installation company serving New Jersey and Pennsylvania, proudly announces a major achievement: the successful installation of solar ...

Our Solar System is full of mysteries, but if the inner planets are a puzzle, the boundary between the Solar System and interstellar space is a secondhand puzzle with half the pieces missing.

A 9th planet in our solar system might be found — and no, it’s not Pluto. Is there another planet out there? Researchers say they have hints of a new candidate ...

MT. LAUREL, N.J., May 14, 2025 (GLOBE NEWSWIRE) -- As the demand for clean, cost-effective energy grows, Define Solar continues to lead the solar movement with customizable investment options tailored ...

The report calls on both the EU and individual member states to “create an enabling environment” for nature-inclusive solar park deployment through policy.