Chrysalis, a 36-mile rotating space habitat, plans to take 2,400 people to Alpha Centauri in approximately 400 years.

Japanese researchers investigated ancient texts from the 4th to 7th centuries CE to identify five total solar eclipses near the Eastern Mediterranean and improve the model of the Earth’s rotation over ...

Pluto has been added to the University of Arizona’s scale-model walking tour of the solar system, but will that be enough to mend the dwarf planet’s broken heart? Not likely, according to a recent ...