Earth’s quicker spin challenges civil time as experts weigh a first negative leap second to keep satellites, networks, and ...

Astronomers recently detected a stray quasi-moon in our planet’s orbit, but it's hardly the first stowaway to hang out around ...

For the past 60 years, Earth has had a secret companion in space—a quasi-moon that has been sharing our planet’s orbit around ...

Simulations and satellite data reveal that Earth's magnetic field is more complex than scientists had thought. Scientists ...

Scientists have identified three Earth-sized planets orbiting two stars in the TOI-2267 system. Remarkably, planets transit ...