The eight planets travel around the Sun at different speeds. These lines show us the paths they take which we call orbits. On a clear night from Earth we can sometimes see the five planets which ...

The orbits of the four inner planets (Mercury, Venus, Earth, Mars) are fully visible, drawn as teal concentric circles around ...

However, it was not until Kepler's observations that the planets followed elliptical orbits around the sun (rather than circular orbits) that astronomical models matched observations of the ...

The pair of stars orbit in a ring structure, and the planet orbits them around the poles. Known as a polar orbit, this is the first time a planet has been observed orbiting two stars in this way.

Astronomers have found a planet that orbits at an angle of 90 degrees around a rare pair of peculiar stars. This is the first time we have strong evidence for one of these 'polar planets' orbiting a ...

A disintegrating planet orbits a giant star ... it circles about 20 times closer to its star than Mercury does to the sun, completing an orbit every 30.5 hours. At such close proximity to ...

The two brown dwarfs are gravitationally bound and orbit near to each other - as close as just 4% of the distance between Earth and the sun. The planet, named 2M1510 (AB) b, orbits around this pair.

Strong evidence of two planets ... moving around each other, but they never collide. This is because the gravitational forces between the objects keep them in their respective orbits.

The two brown dwarfs are gravitationally bound and orbit near to each other - as close as just 4% of the distance between Earth and the sun. The planet, named 2M1510 (AB) b, orbits around this pair.