If an extraterrestrial civilization existed with technology comparable to ours, would they be able to detect Earth?

Some 500 light-years away, a giant gas planet named ... There’s more to this far-away planet. While slightly larger than Jupiter, WASP-127b has only a fraction of its mass, giving it a ...

Researchers said the planet has a mass six times greater than our Earth's and orbits in a "habitable zone" of a star similar to the sun. While located 20 light ... on planets far away from our ...