Earth has a nearly circular orbit, but some planets outside our solar system, called exoplanets, have very elliptical orbits. UCLA astrophysicists have now measured the shape of the orbits of ...

"There really is something very different about how these giant planets form versus how small planets like Earth form." ...

How does a planet’s size influence its orbit around its parent ... within our solar system exhibit largely circular orbits around our Sun, astronomers continue to discover exoplanets whose orbits are ...