Dubbed Teleios, the unusually symmetrical space object is puzzling astronomers with its near-perfect shape and mysterious ...

New research challenges the long-held belief that asteroid Vesta is a protoplanet. Scientists at Michigan State University ...

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The decision came after scientists established three criteria for what defines a planet: it must orbit the sun, be spherical in shape and have “cleared” its orbital path of other debris.

Kosmos 482 has been orbiting the Earth for decades. It's still unknown if the craft will fall to Earth intact or burn up upon atmospheric reentry.

Its pitted surface and dark coloration immediately set it apart, while tiny spherical features ... helps provide clues about the Red Planet's mysterious past.

Venus is sometimes referred to as our sister planet because it is in some ways ... were built like deep-sea submersibles, with thick spherical shells about a metre in diameter able to withstand ...

It would, however, if it was perfectly spherical. Instead, Earth has lots of gravity anomalies—both positive and negative. It's also known as a telluric or rocky planet. A terrestrial planet ...

Its sole spiral arm long ago earned NGC 1961 the additional name Arp 184 and a place in the Atlas of Peculiar Galaxies, a ...

There's also the possibility that the thousand-pound, meter-wide spherical lander burns up as it reenters Earth's atmosphere, but McDowell thinks that's unlikely. "Because it has a heat shield and ...

Experts said ahead of time that some if not all of it might come crashing down, given it was built to withstand a landing on Venus, the solar system’s hottest planet. The Venus 7 probe ...

The spherical “technological terror,” as Darth Vader called it, is a gray, tiled defense system with trenches and a massive dish with a laser capable of destroying a planet. Although the Death ...