Science fiction is fun because physics and lack of technology aren’t constraints. You can create any building or vehicle you can imagine, no matter how big or fast. Just as important, though is that ...

If Earth had the same diameter as the head of a pushpin, how much would all of the other celestial bodies in the universe need to shrink to scale proportionally? It’s a fun, ridiculous question and ...

A neutron star is the densest object astronomers can observe directly, crushing half a million times Earth's mass into a sphere about 12 miles across, or similar in size to Manhattan Island, as shown ...

A newly discovered star system is breaking records — and helping scientists unravel the mysteries of an extreme type of planet known as hot Jupiters. In a paper published Aug. 14 in the journal Nature ...

This illustration shows the average brown dwarf is much smaller than our sun and low mass stars and only slightly larger than the planet Jupiter. Disclaimer: AAAS and EurekAlert! are not responsible ...

Neutron stars are made out of cold ultra-dense matter. How this matter behaves is one of the biggest mysteries in modern nuclear physics. Researchers developed a new method for measuring the radius of ...

And we know that it’s capable of flares of a certain size. But since this is a sample size of one, that doesn’t tell us if this is a normal star or not. So, astronomers from Max Planck, the University ...