Scientists have spotted a new kind of signal in space- four strange, circular objects. Three are particularly bright around their edges, like rings, or bubbles. And they have no idea what they are.

There's something unusual lurking out in the depths of space: Astronomers have discovered four faint objects that at radio wavelengths are highly circular and brighter along their edges. And they're ...

To be a planet, NASA says an object must be big enough that its gravity has cleared away any other objects of a similar size ...

In case you've faced some hurdles solving the clue, Round object, we've got the answer for you. Crossword puzzles offer a fantastic opportunity to engage your mind, enjoy leisure time, and test your ...

Astronomers are baffled about four objects that were spotted in deep space by massive radio telescopes, reports said. LiveScience.com reported on Thursday that the highly circular objects that appear ...