Another vector is force, and one example is gravity, which pulls us down to the Earth’s surface. You have experienced that acceleration feels the same as gravity does.

What would happen if gravity was reduced by half? – Phoebe, aged 13, London UK. Gravity is a force that pulls things towards each other. It is the reason we walk on the surface of the Earth and ...

A new study has revealed that gravity’s effect on Earth is constantly shaping the surface of our planet. When our planet formed, it did so by pulling dust and rock toward its gravitational field.

NASA to Kids: Name Our Twin Moon Gravity Probes Two NASA spacecraft bound for the moon are in need of some new names, and the space agency is recruiting students for the job. Oct. 4, 2011, 12:20 ...

However, at Neptune’s surface, the gravity is only about 1.1 times the gravity we experience on Earth. In other words, if something weighed 100 pounds on Earth, you would find it weighs 110 ...

The moon has a surface gravity of around 1.62 meters per second squared, according to NASA. In comparison, the Earth has a surface gravity of approximately 9.8 meters per second squared .

The European Space Agency has designed a tiny mobile phone-sized probe that could become the world's first to measure the gravity on the surface of an asteroid.

NASA is inviting students to help name its new moon mission, currently titled GRAIL (Gravity Recovery And Interior Laboratory). Kids can submit names for the two lunar gravity-mapping probes.