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Hace 1 día · Figure 2. Meteor Crater, Arizona, also called Barringer Meteorite Crater, has a diameter of 1,200 m; the floor is ~130 m below the surrounding plain and the rim is 40–65 m above the plain. The crater formed 50,000 years ago when a metallic body ~50–60 m in diameter hit the
Hace 1 día · The Cretaceous–Paleogene (K–Pg) extinction event, also known as the Cretaceous–Tertiary (K–T) extinction, was the mass extinction of three-quarters of the plant and animal species on Earth approximately 66 million years ago. The event caused the extinction of all non-avian dinosaurs.
News feed for newly approved meteorites: Data sources: • The Catalogue of Meteorites: 2002 June (current through Met. Bull 87). • MetBase: v7.2 (current through Met. Bull. 89). • Antarctic Meteorite Newsletter: through 47(1), 2024 Mar. • Meteorite Newsletter (NIPR): through v.28, 2021.
Hace 1 día · Halley's Comet is the only known short-period comet that is consistently visible to the naked eye from Earth, appearing every 72–80 years. It last appeared in the inner parts of the Solar System in 1986 and will next appear in mid-2061.
Hace 1 día · The dashboard displays the next five Earth approaches to within 4.6 million miles (7.5 million kilometers or 19.5 times the distance to the moon); an object larger than about 150 meters that can approach the Earth to within this distance is termed a potentially hazardous object.
Hace 4 días · These are a diverse and richly complex set of rocks, ranging in age from 175 million years to 2.4 billion years or so. Studying these meteorites in greater detail will help to prepare the next ...
Hace 5 días · Life on Earth began somewhere between 3.7 and 4.5 billion years ago, after meteorites splashed down and leached essential elements into warm little ponds, say scientists.
