Plato, the European Space Agency's terrestrial planet hunter spacecraft, is seen after having 24 of its 26 cameras installed.

A planet circling at a sharp 90-degree angle to the orbits of its two host stars has now been confirmed. This discovery ...

To understand how chaotic the early solar system was, we need only gaze at the moon. Its cratered surface bears the scars of ...

Our solar system may have a ninth planet after all, researchers say. The possibility that an additional planet may be ...

The presence of another planet in the solar system could explain the odd movements of some of the bodies in the Kuiper Belt.

An alternate explanation that fits the evidence is that Vesta was once part of a planet – but which planet that might been ...

Caroline Delbert is a writer, avid reader, and contributing editor at Pop Mech. She's also an enthusiast of just about ...

Astronomers have long speculated about an unseen planet lurking in the solar system's outer edge. This hypothetical world, ...

Explore how Earth Day 2025 spotlighted the urgent shift from fossil fuels to renewables, and why accelerating clean energy is ...

Jeremy Irons, Vanessa Redgrave and Michael York have joined the voice cast of 3D animated family sci-fi adventure “The ...

The Planet Earth and Moon in Orbit 42179 set measures 9" high, 12.5" long, and 7" wide. It's comprised of 526 pieces and is marketed for ages 10 and older. Technically speaking, this is a relatively ...