Our Solar System's average velocity through the galaxy's Orion Arm is 450,000 miles per hour, or 200 kilometers per second. These two objects are careening twice as fast, at a speed of at least 1. ...

A British propulsion company is aiming to harness nuclear fusion and drastically cut travel times to far off places in space.

To reach the Sun, Parker Solar Probe had to be fast—incredibly fast. Using gravity assists from Venus, it gradually shrinks its orbit, inching ever closer to the solar surface. By late 2024 ...

NASA's Parker Solar Probe just screamed past the Sun for the 23rd time, once again matching its own records for closest ...

"We're trying to encounter an astronomical object that streaks through our solar system just once and we don’t want to miss ...

NASA’s Parker Solar Probe is set for another close brush with the sun, reaching record speeds of 430,000 mph as it flies ...

If you look up on a clear night, the brightest and largest object in the sky will probably ... So exactly how many solar system moons have we found? The answer, it turns out, depends on your ...

Gravity close gravityThe force of attraction between all objects. The more mass an object has, the larger the force of gravity it exerts. is a force that attracts objects towards each other.