Quantcast

Latest Impact event Stories

9471065f28a4ef4e663618ef05589c6e
2011-07-13 10:40:00

Lawrence LeBlond for redOrbit.com - Your Universe Online The debate whether dinosaurs went extinct due to a large space rock that struck the Earth 65.5 million years ago (MYA) may have been answered with the discovery of a distinctive brow horn from a Ceratopsian dinosaur just 13 centimeters (5.1 inches) below the K-T boundary -- the distinct layer of geological sediments separating the Cretaceous and Tertiary periods. Rocks laid down 65.5 MYA show a thin layer abundant in rare elements...

ca606d95f704d84b2be86e24447ebead
2011-06-10 05:40:00

According to a new discovery, some asteroids may have been like "molecular factories" cranking out life's ingredients and shipping them to Earth through meteorite impacts.  The research team analyzed samples of a meteorite that landed on Tagish Lake in northern British Columbia in 2000.  Variations in the geology of the meteorite samples were visible to the naked eye and indicated the asteroid had gone through substantial changes. The team looked for variations in the organic...

2011-04-28 10:25:00

WASHINGTON, April 28, 2011 /PRNewswire-USNewswire/ -- Late last year, astronomers noticed an asteroid named Scheila had unexpectedly brightened, and it was sporting short-lived plumes. Data from NASA's Swift satellite and Hubble Space Telescope showed these changes likely occurred after Scheila was struck by a much smaller asteroid. (Logo: http://photos.prnewswire.com/prnh/20081007/38461LOGO) "Collisions between asteroids create rock fragments, from fine dust to huge boulders, that...

f48e7a275343afdcbc0019e72e779c591
2011-04-28 11:40:00

Frank Reddy, NASA's Goddard Space Flight Center, Greenbelt, Md. Late last year, astronomers noticed an asteroid named Scheila had unexpectedly brightened, and it was sporting short-lived plumes. Data from NASA's Swift satellite and Hubble Space Telescope showed these changes likely occurred after Scheila was struck by a much smaller asteroid. "Collisions between asteroids create rock fragments, from fine dust to huge boulders, that impact planets and their moons," said Dennis Bodewits, an...

62f2323a858e2362be766d6fe8142881
2011-04-04 11:34:29

Bombardments of 'micro-meteorites' on Earth and Mars four billion years ago may have caused the planets' climates to cool dramatically, hampering their ability to support life, according to research published today in the journal Geochimica et Cosmochimica Acta. Scientists from Imperial College London studied the effects of the Late Heavy Bombardment (LHB), a period of time in the early Solar System when meteorite showers lasting around 100 million years barraged Earth and Mars. This...

2011-03-16 07:20:00

TUCSON, Ariz., March 16, 2011 /PRNewswire/ -- The recent Japanese earthquake and tsunami and the 2004 Indonesian earthquake and tsunami have shocked the world. Dr. Jeffrey Goodman, an archeologist and geologist who has spent years researching the Bible's stories of catastrophe, says that tsunamis that dwarf those of Japan and Indonesia are written about in the Bible. In his new book "THE COMETS OF GOD" Goodman says the Bible tells of a mega-tsunami that occurred in the past and a...

e260c2c78488a67f209f34bbd5b744461
2011-01-29 12:19:48

So you think global warming is a big problem? What could happen if a 25-million-ton chunk of rock slammed into Earth? When something similar happened 65 million years ago, the dinosaurs and other forms of life were wiped out."A collision with an object of this size traveling at an estimated 30,000 to 40,000 mile per hour would be catastrophic," according to NASA researcher and New York City College of Technology (City Tech) Associate Professor of Physics Gregory L. Matloff. His...

1f860c5bf17c181fce9bc2764995998a1
2010-12-10 12:40:00

A team of NASA-funded researchers has unveiled a new theory that contends planets gained the final portions of their mass from a limited number of large comet or asteroid impacts more than 4.5 billion years ago. These impacts added less than one percent of the planets' mass. Scientists hope the research not only will provide a better historical picture of the birth and evolution of Earth, the moon and Mars, but also allow researchers to better explore what happened in our solar system's...

2010-12-09 17:49:00

MOFFETT FIELD, Calif., Dec. 9, 2010 /PRNewswire-USNewswire/ -- A team of NASA-funded researchers has unveiled a new theory that contends planets gained the final portions of their mass from a limited number of large comet or asteroid impacts more than 4.5 billion years ago. These impacts added less than one percent of the planets' mass. (Logo: http://photos.prnewswire.com/prnh/20081007/38461LOGO) Scientists hope the research not only will provide a better historical picture of the birth...

bdaf3f91009df6b1c035baee6f697ce61
2010-11-04 06:00:00

Scientists at Purdue University and Imperial College London have revised their popular "ËœImpact Effects Calculator', which allows anyone to calculate the potential damage a comet or asteroid would cause if it collided with the Earth. The interactive tool, available at http://www.purdue.edu/impactearth, lets users enter in specific details about the hypothetical impactor, such as its diameter and density, velocity, angle of entry and where it will hit the Earth. It then estimates...


Latest Impact event Reference Libraries

6_d482c2be3fde61d7b1ea392b972acdb62
2004-10-19 04:45:41

Crater -- A crater is a circular depression on the surface of a planet, moon, asteroid, or other celestial body. Craters are typically caused by meteorite impacts, although some are caused by volcanic activity. In the center of craters on Earth a crater lake often accumulates, and in craters formed by meteorites a central island (caused by rebounding crustal rock after the impact) is usually a prominent feature in the lake. Ancient craters whose relief has disappeared leaving only a...

3_8254e27b9fccec1aaab3b9785e39d79f2
2004-10-19 04:45:40

Near-Earth Asteroid -- Near-Earth asteroids (NEAs) are asteroids whose orbit intersects Earth's orbit and which may therefore pose a collision danger, as well as being most easily accessible for spacecraft from Earth. In fact, some near-Earth asteroids can be reached with much less ΔV than the Moon. The most famous near-Earth asteroid is 433 Eros that was visited by NASA's Near Earth Asteroid Rendezvous probe. A few hundred such near-Earth asteroids are known, ranging in size up...

More Articles (2 articles) »
Word of the Day
grass-comber
  • A landsman who is making his first voyage at sea; a novice who enters naval service from rural life.
According to the OED, a grass-comber is also 'a sailor's term for one who has been a farm-labourer.'