A new probe in development known as GIRO represents a low-cost step toward unlocking the secrets of the outer planets, all through the invisible pull of gravity.

Gravity on Earth never changes because the mass of the Earth never changes. Essentially, huge chunks of our planet aren’t being ripped out from under our feet (which is, I think, generally a ...

And when it comes to the planets of our solar system, which vary in size and mass, the strength of gravity on their surfaces varies considerably. For example, Earth's gravity, as already noted, is ...

If a planet had eight Earth masses and 2.83 times the radius, its surface gravity would be exactly 1g. This is the “Fictional Planet” at the bottom of the table.

And on smaller scales, the effects of gravity get weaker and weaker. It’s easy to see the effects of gravity for objects the size of a star or planet, but it is much harder to detect gravitational ...

Gravity on the surface, g in N/kg 11.2 Use a set of bathroom scales to measure your mass in kg. Then use the table above and the equation: Weight = mass x gravity to investigate how your mass and ...

Stars often whip their planets with solar winds and radiation, pull them ever closer with gravity and sear them with heat.

The gravity of an alien star is causing its planet to unwind, research now reveals. The world in question is WASP-12b, the only known planet circling the yellow sun-like star WASP-12 some 867 ...

Anyway, the planets are round because of gravity. Billions of years ago, when the universe was just starting out, there were innumerable bits of gas and dust floating around out there.

The elusive Planet Nine, which is theorized to be lurking somewhere in the outer reaches of the solar system, may not be a planet after all, a new study suggests.