For that purpose, 3I/ATLAS must arrive within Jupiter’s radius of gravitational influence — the so-called Hill radius, inside of which Jupiter’s gravity overcomes the gravitational tide from the Sun.

ESA confirmed that the 3I/ATLAS encounter was used as a planetary-defense rehearsal, conducted under the European Space ...

Harvard astrophysicist Avi Loeb explains why interstellar comet 3I/ATLAS is unlikely to spell doomsday for Earth, even as he ...