NASA has detected a mysterious object near Jupiter’s orbit, leaving scientists puzzled. The unknown entity could be a new ...

Over the past decade or so, astronomers have speculated about the characteristics of rogue planets in the Milky Way galaxy.

Astronomers have long speculated about an unseen planet lurking in the solar system's outer edge. This hypothetical world, dubbed Planet Nine, could explain the unusual clustering ...

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 ...

What's even more astonishing: with every blistering 30-hour orbit — which heats the planet to close to 3,000 degrees Fahrenheit (1,600 degrees Celsius) — the planet sheds as much mass of ...

Some, called rogue planets, don't even orbit a star, but are floating through the cosmos untethered. Astronomers have confirmed the existence of more than 5,800 exoplanets, but billions are ...

The research was published in the journal Science Advances.Scientists know of over a dozen planets that orbit two stars like the fictional "Star Wars" scorching desert planet Tatooine with double ...

And these observations are giving us hints about what's going on? A new "Tatooine-like" planet outside the solar system may orbit two failed stars, scientists reported Wednesday.Related video ...