DULUTH — Planets, planets everywhere, and here and there an Earth. Astronomers announced the discovery this week of a new, temperate Earth-sized planet only 11 light-years away orbiting the star Ross 128 in the constellation Virgo. After Proxima b, the planet circling Proxima Centauri in the Alpha Centauri triple star system, it's the closest, potentially life-friendly planet found.
DULUTH — The Hubble Space Telescope is always up to something. Now, a German-led group of astronomers have observed a one-of-a-kind object in the asteroid belt between Mars and Jupiter. Scratch that. Two-of-one-kind: a pair of asteroids orbiting each other that show comet-like features including a bright coma and a long tail. It's the first known binary asteroid also classified as a main-belt comet. The team's research was published in the journal Nature recently.