An object eight times the mass of Jupiter may have swooped around the sun, coming superclose to Mars' present-day orbit ...

"There is little question that, with its daylight display and spectacular evening apparition in a moonless sky, Comet 2024 G3 ...

BS4 may be anywhere between 17 and 40 feet across, and will approach at about twice the distance between the Earth and moon.

Trillions of icy exocomets have been found orbiting alien stars, reshaping our understanding of planetary systems.