Trans-Neptunian objects (TNOs) are icy bodies that vary widely in size, from large dwarf planets like Pluto and Eris—each ...

Yet despite the cold temperatures over the continent, the planet as a whole has set a new temperature record yet again: ...

Firefly Aerospace's moon-bound spacecraft has provided the closest thing to a reflecting pool in space, showing Earth as an ...

The coldest burst of Arctic air this season is coming to put an icy exclamation point on America's winter of repeated polar ...