Search results
Results From The WOW.Com Content Network
The North Polar Basin, more commonly known as the Borealis Basin, is a large basin in the northern hemisphere of Mars that covers 40% of the planet. [1] [2] Some scientists have postulated that the basin formed during the impact of a single, large body roughly 2% of the mass of Mars, having a diameter of about 1,900 km (1,200 miles) early in the history of Mars, around 4.5 billion years ago.
The Utopia basin is estimated to have formed around 4.3-4.1 billion years ago. [ 6 ] [ 7 ] The impactor was likely around 400–700 kilometres (250–430 mi) in diameter. [ 8 ] [ 9 ] [ 10 ] The basin was subsequently mostly filled in, resulting in a mascon (a strong positive gravity anomaly ) detectable by orbiting satellites.
The basin is located in the southern highlands of Mars and is thought to have been formed about 3.9 billion years ago, during the Late Heavy Bombardment. Studies suggest that when an impact created the Hellas Basin, the entire surface of Mars was heated hundreds of degrees, 70 meters of molted rock fell on the planet, and an atmosphere of ...
Part of a valley network near Warrego Valles, seen by THEMIS.Length of image is roughly 50 km. The valleys of the networks are typically narrow (<0.5–4 km) and 50–200 m deep, with neither value changing consistently along their lengths.
The Paraná Valles are a set of channels in a valley in the Margaritifer Sinus quadrangle (MC-19) region of Mars, located at approximately 23.1° South and 10.2° West.They are 350 kilometres (220 mi) long and were named after an ancient and modern name for a South American river (Brazil, Argentina). [1]
Atlantis basin is an eroded impact crater in the southern hemisphere of Mars, in the Phaethontis quadrangle, Sirenum Terrae region, centered at 177° West, 35° South. It was formed during the early Noachian period .
Nili Fossae is a group of large, concentric grabens on Mars, in the Syrtis Major quadrangle. They have been eroded and partly filled in by sediments and clay-rich ejecta from a nearby giant impact crater, the Isidis basin. [1] It is at approximately 22°N, 75°E, and has an elevation of −0.6 km (−0.37 mi).
Arcadia Planitia is a smooth plain with fresh lava flows and Amazonian volcanic flows on Mars. It was named by Giovanni Schiaparelli in 1882 after the Arcadia region of ancient Greece . It dates from the Amazonian period 's arcadia formation's lava flows and small cinder cones .