The newly discovered moons are "irregular" satellites, meaning they are small (averaging about 3 km across) and have distant, often eccentric orbits.
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Rogue-planet moons could stay habitable, but only with a thick atmosphere
Moons orbiting rogue planets, worlds flung from their parent star systems into the cold of interstellar space, could maintain ...
Math enthusiasts around the world, from college students to rocket scientists, celebrate Pi Day, which is March 14 or 3/14 — the first three ...
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