If there had been no asteroid collision 65 million years ago, would the human species even exist?
If there had been no asteroid collision 65 million years ago, would the human species even exist?
Massive, Ancient Asteroid Crater may Provide Clues to Dinosaur Extinction
Scientists digging deep into the Gulf of Mexico say they have cracked into a crater, formed some 65 million years ago after a massive asteroid struck the earth. The 33-member team of scientists from a...
Moon was produced by a head-on collision between Earth and a forming planet
The violent impact with a “planetary embryo” called Theia occurred approximately 100 million years after the Earth formed, UCLA geochemists and colleagues report. The researchers analyzed seven rocks ...
Did 'Dark Matter' Or A Star Called Nemesis Kill The Dinosaurs?
The dinosaur extinction 66m years ago was most likely caused by a comet or big asteroid hitting the Earth. But given that asteroids don't actually hit our planet very often, could this really be the w...
Asteroid Impact, Volcanism Were One-Two Punch For Dinosaurs
For 35 years, paleontologists and geologists have debated the role these two global events played in the last mass extinction, with one side claiming the eruptions were irrelevant, and the other side ...
Alvarez hypothesis - Deadly Blast
To understand the deadly release of energy caused by an asteroid striking Earth, scientists study the blast of a 5000-pound bomb. Explorer: 24 Hours After A...
Alvarez hypothesis
The Alvarez hypothesis posits that the mass extinction of the dinosaurs and many other living things was caused by the impact of a large asteroid on the Earth sixty-five million years ago, called the ...
Alvarez hypothesis - Wikipedia
Moon was produced by a head-on collision between Earth and a forming planet
The violent impact with a “planetary embryo” called Theia occurred approximately 100 million years after the Earth formed, UCLA geochemists and colleagues report. The researchers analyzed seven rocks ...
History of Solar System formation and evolution hypotheses
Ideas concerning the origin and fate of the world date from the earliest known writings; however, for almost all of that time, there was no attempt to link such theories to the existence of a "Solar S...
History of Solar System formation and evolution hypotheses - Wikipedia
Extinction event
An extinction (level) event (also known as a mass extinction or biotic crisis) is a widespread and rapid decrease in the amount of life on Earth. Such an event is identified by a sharp change in the d...
Extinction event - Wikipedia
Triassic–Jurassic extinction event
The Triassic–Jurassic extinction event marks the boundary between the Triassic and Jurassic periods, 201.3 million years ago, and is one of the major extinction events of the Phanerozoic eon, profound...
Triassic–Jurassic extinction event - Wikipedia
Sea level rise
Current sea level rise is about 3 mm/year worldwide. According to the US National Oceanic and Atmospheric Administration (NOAA), "this is a significantly larger rate than the sea-level rise avera...
Sea level rise - Wikipedia
Permian–Triassic extinction event
The Permian–Triassic (P–Tr) extinction event, colloquially known as the Great Dying or the Great Permian Extinction, occurred about 252 Ma (million years) ago, forming the boundary between the Permian...
Permian–Triassic extinction event - Wikipedia
Eltanin impact
90°47′W / 57.783°S 90.783°W / -57.783; -90.783The Eltanin impact was an asteroid impact in the southeast Pacific Ocean at the beginning of the Quaternary Period 2.5 million ye...
Late Heavy Bombardment
The Late Heavy Bombardment (abbreviated LHB and also known as the lunar cataclysm) is a hypothetical event thought to have occurred approximately 4.1 to 3.8 billion years (Ga) ago, spanning the Neohad...
Late Heavy Bombardment - Wikipedia
Tollmann's hypothetical bolide
Alexander Tollmann's bolide, proposed by Kristan-Tollmann and Tollmann in 1994, is a hypothesis presented by Austrian geologist Alexander Tollmann, suggesting that one or several bolides (asteroids or...
Chicxulub crater
The Chicxulub crater (/ˈtʃiːkʃʉluːb/; [tʃʼikʃuluɓ]) is a prehistoric impact crater buried underneath the Yucatán Peninsula in Mexico. Its center is located near the town of Chicxulub, after which the ...
Chicxulub crater - Wikipedia
Cretaceous-Tertiary extinction event
The Cretaceous–Paleogene (K–Pg) extinction event, formerly known as the Cretaceous–Tertiary (K–T) extinction, was a mass extinction of some three-quarters of plant and animal species on Earth—includin...
Cretaceous-Tertiary extinction event - Wikipedia
Giant impact hypothesis
The giant impact hypothesis, sometimes called the Big Splash, or The Theia Impact states that the Moon was formed out of the debris left over from an indirect collision between the Earth and an astron...
Giant impact hypothesis - Wikipedia
Deccan Traps
The Deccan Traps are a large igneous province located on the Deccan Plateau of west-central India (between 17°–24°N, 73°–74°E) and one of the largest volcanic features on Earth. They consist of multip...
Deccan Traps - Wikipedia
Hypothetical fifth gas giant
The hypothetical fifth giant planet is an additional planet added by some theorists to recent versions of the Nice model. The fifth giant planet is ejected from the Solar System following gravitationa...
Shiva Hypothesis
Named after Shiva, the Hindu god of destruction, the Shiva Hypothesis is a hypothesis that purports to explain an apparent pattern in mass extinctions caused by impact events.The hypothesis, created b...