Solar flares are a fascinating thing and have a profound effect on what astronomers refer to as "space weather." These events ...

The fall equinox not only marks the first official day of fall, here in San Diego it is also the time to view "Salkhenge." ...

The researchers used data from the Moon Mineralogy Mapper (M3) instrument on the Chandrayaan-1 spacecraft, which orbited the ...

SANDHILL CRANES, photograph by Randy Olson (Platte River, Nebraska, 2016). The new National Geographic exhibition, “The ...

Do you have a picture from paradise you’d like to share with Tropicalia readers? We’d love to print it. Email photos to ...