The shape of a planet's orbit is one of its fundamental properties, along with its size and distance from its host star.

Planets change orbit shape around Neptune’s size. Metal-rich stars help giant planets form. Eccentric orbits suggest chaotic planet formation.

As The Verge notes, the Kepler Space Telescope was launched in 2009 with ... The spacecraft is in a safe orbit far from Earth. The entire trove of scientific data that it collected has been ...

Earth has a nearly circular orbit, but some planets outside our ... The researchers used data collected by NASA’s Kepler telescope, which monitored 150,000 stars and measured dips in their ...

Astronomers have discovered nearly 6,000 planets beyond our own solar system. Here's how — and how we'll find even more.

How does a planet’s size influence its orbit around its parent star? This is what a recent study published in the Proceedings of the National Academy | Space ...