New evidence suggests that billions of years ago, a star may have passed very close to our solar system. As a result, ...

A star’s flyby likely altered the orbits of trans-Neptunian objects beyond Neptune that changes how we view the solar ...

After launching early on Tuesday, the billionaire Jared Isaacman and his crew traveled to altitudes not visited by any ...

Finland’s ReOrbit is developing a small communications satellite for GEO and has signed a contract with an unnamed Malaysian ...

A Bengaluru-based space-sector start-up on Thursday unveiled an ultra low earth orbit satellite with the capability to operate at an altitude of 200 km with the help of propulsion systems developed in ...

Gravitational attraction provides the centripetal force needed to keep a planet in orbit around the Sun, and a satellite in orbit around a planet. For example, gravitational attraction between the ...

An Electron launched a second set of satellites for French startup Kinéis Sept. 20, putting that company on track to begin ...

Billions of dollars of observatory spacecraft orbit around Earth or in the same orbit as our planet. When something wears out ...

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For about 4.5 billion years, our planet has circled the sun on a stable, rhythmic path. Each of Earth's orbits takes ...

Cornell University researchers have demonstrated that acoustic sound waves can be used to control the motion of an electron as it orbits a lattice defect in a diamond, a technique that can ...