Mercury has the shortest and fastest orbit around the Sun and experiences dramatic temperature changes as it rotates. It is a world of extremes. Explore facts about our solar system's fastest planet.

While conducting experiments in a "highly elliptical orbit," the X-37B orbital test vehicle captured a rare image of Earth from high above the African continent. Since launching on its seventh ...

The new footage features a close-up of the moon’s far side, an area that is not visible from Earth, taken after the lander transitioned from a high elliptical orbit to a lower elliptical orbit ...

Mercury has the least circular of the orbits ... which can only be achieved with an elliptical orbit. Thousands of years ago, the ancient Greeks believed all celestial objects orbited around ...

If the skies are clear, skywatchers might catch red planet Mercury in the hour before the sun rises. The moon will reach its perigee on Sunday, the closest point in its elliptical orbit around ...

The Roadster is currently on an elliptical path around the sun, taking it past Venus and Mercury too. It completes one full orbit about every 557 days, and is scheduled to finish its first orbit ...

The Sun’s huge gravitational field keeps many other objects – planets, dwarf planets, asteroids and comets – in orbit around it. The Sun and its planets – Mercury, Venus, Earth ...

The Sun’s huge gravitational field keeps many other objects - planets, dwarf planets, asteroids and comets - in orbit around it. The Sun and its planets - Mercury, Venus, Earth, Mars ...

A secretive U.S. spaceship has landed after 434 days in orbit. The X-37B Orbital Test Vehicle-7 (OTV-7) - described by U.S. Space Force as a " dynamic unmanned spaceplane" - successfully deorbited and ...