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

NASA has been monitoring a never-before-seen planet in its solar system, which is eight times the size of Earth.

Near-Earth asteroid Bennu has a slim chance of colliding with Earth in 2182. If it does, the impact could trigger a global ...

Scientists have discovered a “super-Earth” planet that may have conditions suitable for life, according to the University of ...