History's Layers in Hebes Chasma Size:18" x 24" See America poster showing the

See America poster showing the dramatic environment of Bryce Canyon National Park in Southern Utah

Arp 273 lies in the constellation Andromeda and is roughly 300 million light-years away from Earth

and Randy Bresnik

from which new stars are born

Paul's Cathedral

History's Layers in Hebes Chasma Size:18" x 24" See America poster showing theOn the northern side of Valles Marineris on Mars lies a closed geological depression named Hebes Chasma. In outline, Hebes looks like a micro version of the gigantic valley but it extends only about 320 kilometers (200 miles) long and stretches 130 km (80 miles) wide at its widest. Still, Hebes is about 5 to 6 km (16,000 to 20,000 feet) deep in the region seen here and as with most parts of the Valles Marineris system, landslides scar its walls. Yet