Researchers believe the “quasi-satellite” has accompanied Earth since 1957.

Humanity’s relationship with the moon has always been simple. One planet, one moon — a cosmic partnership as reliable as sunrise. But that clarity just got murkier. Astronomers have confirmed ...

No, Earth will not have "two moons until 2083," but asteroid 2025 PN7 has joined Earth's orbital path, with the tiny fleet of space rocks set to trail Earth's orbit until 2083 before the sun pulls it ...

As Earth spins faster than it has in decades, atomic clocks are catching the difference, and shorter days are on the horizon. When you purchase through links on our site, we may earn an affiliate ...