If you have visited an island like one of the Hawaiian Islands, Tahiti or Easter Island, also known as Rapa Nui, you may have noticed how small these land masses appear against the vast Pacific Ocean.

Exit strategy Artist’s impression of New Horizons as it flew past Pluto in 2015. (Courtesy: Johns Hopkins University Applied Physics Laboratory/Southwest Research Institute) NASA’s New Horizons ...

(The Conversation is an independent and nonprofit source of news, analysis and commentary from academic experts.) Christopher Palma, Penn State (THE CONVERSATION) If you have visited an island like ...

We've long known that some animals depend on the Sun to navigate the world. However, new research may have uncovered the first insect we know of that does the same using the stars and night sky. The ...

NEW YORK (AP) — An Australian moth follows the stars during its yearly migration, using the night sky as a guiding compass, according to a new study. When temperatures heat up, nocturnal Bogong moths ...