Moonwatch

Type: Sinuous rille Size: 80km x 2.5km Longitude/latitude: 3.1° E, 25.7° N Age: 3.2–3.9 billion years Best time to see: First quarter (2–3 July) and six days after full Moon (16–17 July) Minimum equip

Type: Lunar sea Size: 330km Longitude/latitude: 94.7° W, 19.9° S Age: 3.8–3.9 billion years Best time to see: Determined by libration and phase (15–23 June and 11–20 July) Minimum equipment: 10x binoc

For those of us in the Northern Hemisphere, the lack of true darkness in the middle of the year doesn’t make astronomy that easy to do. The planets are good at cutting through slightly brighter skies,

We leave La Serena at dusk, heading east towards the stars. The 90-minute drive winds through the Elqui Valley, lush green with vineyards and home to skies so dark that international observatories on

Scientists working with the James Webb Space Telescope have likened this object to an ice cream sundae. Others examining it with the now-defunct Spitzer Space Telescope dubbed it the cosmic tornado. T

Mars once had vast oceans on its surface. Then its magnetic field weakened, its atmosphere thinned, and its water vanished. But the numbers don’t add up. For the Red Planet to have transformed from a