ALMA

Epsilon Eridani, a nearby orange dwarf star located about 10.5 light-years away, hosts the closest known debris disk - a ring of dust and icy rocks orbiting the star. This system also features a large planet, Epsilon Eridani b, which is similar to Jupiter. New measurements of the outer debris belt suggest it is remarkably circular and dynamically cold, meaning the particles within it have very orderly, stable orbits. To determine the shape of this disk, researchers re-examined data from the A...