News About Asteroids And Comets
November 17, 2017
Site of asteroid impact changed the history of life
Sendai, Japan (SPX) Nov 13, 2017
An asteroid, also known as the Chicxulub Impactor, hit Earth some 66 million years ago, causing a crater 180 km wide. The impact of the asteroid heated organic matter in rocks and ejected it into the atmosphere, forming soot in the stratosphere. Soot is a strong, light-absorbing aerosol that caused global climate changes that triggered the mass extinction of dinosaurs, ammonites, and other animals, and led to the macroevolution of mammals and the appearance of humans. Based on results of a n ... read more

.
Space News from SpaceDaily.com
Can a superconducting magnetic sail slow down an interstellar probe

China plans for nuclear-powered interplanetary capacity by 2040

Winds Blow Dust off the Solar Panels Improving Energy Levels

Old Rivals India, China Nurture New Rivalry in Satellite Launch Business

What is the computational power of the universe?

Lava or Not, Exoplanet 55 Cancri e Likely to have Atmosphere

Hunt for dark matter is narrowed by new University of Sussex research

..
Unlucky dinosaurs: Scientists say asteroid had 13 percent chance of triggering extinction
When an asteroid came barreling into Earth some 66 million years ago, it wasn't necessarily a guarantee that life on planet Earth would be drastically altered - that 75 percent of all plant and animal species, including the dinosaurs, would disappear. ... more
..
Dawn Explores Ceres' Interior Evolution
Surface features on Ceres - the largest world between Mars and Jupiter - and its interior evolution have a closer relationship than one might think. A recent study, published in Geophysical Re ... more
..
Return of the Comet: 96P Spotted by ESA, NASA Satellites
The ESA (European Space Agency) and NASA mission SOHO - short for Solar and Heliospheric Observatory - got a visit from an old friend this week when comet 96P entered its field of view on Oct. 25, 2 ... more
..
Astronomers Complete First International Asteroid Tracking Exercise
An international team of astronomers led by NASA scientists successfully completed the first global exercise using a real asteroid to test global response capabilities. Planning for the so-cal ... more
..
Hubble Sees Nearby Asteroids Photobombing Distant Galaxies
Like rude relatives who jump in front of your vacation snapshots of landscapes, some of our solar system's asteroids have photobombed deep images of the universe taken by NASA's Hubble Space Telesco ... more
..
Dinosaur-killing asteroid impact cooled Earth's climate more than previously thought
The Chicxulub asteroid impact that wiped out the dinosaurs likely released far more climate-altering sulfur gas into the atmosphere than originally thought, according to new research. A new st ... more
..
ROSINA Spectral Measurements Bring Comet's Chemistry to Life
Launched March 2004 and following a 10-year journey across the solar system, the European Space Agency's Rosetta probe made history in 2014. It became the first spacecraft to orbit the nucleus of a ... more
..
NASA Evaluates Use of a Coin-Sized Thermometer to Characterize Comets and Earthbound Asteroids
Two NASA teams want to deploy a highly compact, sensitive thermometer that could characterize comets and even assist in the redirection or possible destruction of an asteroid on a collision course w ... more

Free Newsletters - Space News - Defense Alert - Environment Report - Energy Monitor
..
Rosetta finds comet plume powered from below
Last year, a fountain of dust was spotted streaming from Rosetta's comet, prompting the question: how was it powered? Scientists now suggest the outburst was driven from inside the comet, perhaps re ... more
..
Dawn Finds Possible Ancient Ocean Remnants at Ceres
Minerals containing water are widespread on Ceres, suggesting the dwarf planet may have had a global ocean in the past. What became of that ocean? Could Ceres still have liquid today? Two new studie ... more
..
Small Asteroid or Comet 'Visits' from Beyond the Solar System
A small, recently discovered asteroid - or perhaps a comet - appears to have originated from outside the solar system, coming from somewhere else in our galaxy. If so, it would be the first "interst ... more
..
Rosetta Reveals Dust Jet from Comet
The impressive jets of dust that comets emit into space during their journey around the Sun are not driven solely by the sublimation of frozen water. In some cases further processes augment the outb ... more
..
Scientists detect comets outside our solar system
Scientists from MIT and other institutions, working closely with amateur astronomers, have spotted the dusty tails of six exocomets - comets outside our solar system - orbiting a faint star 800 ligh ... more
..
Asteroid Luca
ESA astronaut Luca Parmitano has been on Earth since his mission to the International Space Station in 2013, but "Lucaparmitano" is now back in space thanks to an Italian astronomer. The Inter ... more
..
Dawn Mission Extended at Ceres
NASA has authorized a second extension of the Dawn mission at Ceres, the largest object in the asteroid belt between Mars and Jupiter. During this extension, the spacecraft will descend to lower alt ... more
..
Orionid meteor shower to peak this weekend
The annual Orionid meteor shower is expected to peak over the weekend, offering viewers with clear skies the chance to see up to 20 meteors per hour. ... more

Free Newsletters - Space News - Defense Alert - Environment Report - Energy Monitor
Training Space Professionals Since 1970

Tempur-Pedic Mattress Comparison & Memory Foam Mattress Review
..
A solar-powered asteroid nursery at the orbit of Mars
The planet Mars shares its orbit with a handful of small asteroids, the so-called Trojans. Among them, one finds a unique group, all moving in very similar orbits, suggesting that they originated fr ... more
..
SwRI scientists dig into the origin of organics on Ceres
Since NASA's Dawn spacecraft detected localized organic-rich material on Ceres, Southwest Research Institute (SwRI) has been digging into the data to explore different scenarios for its origin. Afte ... more
..
Spinning comet rapidly slows down during close approach to Earth
Astronomers at Lowell Observatory observed comet 41P/Tuttle-Giacobini- Kresak last spring and noticed that the speed of its rotation was quickly slowing down. A research team led by David Schleicher ... more
..
Samples brought back from asteroid reveal 'rubble pile' had a violent past
Curtin University planetary scientists have shed some light on the evolution of asteroids, which may help prevent future collisions of an incoming 'rubble pile' asteroid with Earth. The scient ... more
..
Number of Undiscovered Near-Earth Asteroids Revised Downward
Fewer large near-Earth asteroids (NEAs) remain to be discovered than astronomers thought, according to a new analysis by planetary scientist Alan W. Harris of MoreData! in La Canada, California. Har ... more
..
Close Approach of Asteroid 2012 TC4 Poses no Danger to Earth
The house-sized asteroid 2012 TC4 is slated to give Earth a close shave on Thursday, October 12, swooshing by our planet at approximately 5:41 UTC (1:41 a.m. EDT) at a distance of about 31,000 miles ... more
..
Earth's New Traveling Buddy Is an Asteroid, Not Space Junk
At the 49th Annual Division for Planetary Sciences Meeting in Provo, Utah, astronomers led by Vishnu Reddy at the University of Arizona Lunar and Planetary Laboratory confirm the true nature of one ... more
..
Asteroid Tracking Network Observes Close Approach
On Oct. 12 EDT (Oct. 11 PDT), a small asteroid designated 2012 TC4 will safely pass by Earth at a distance of approximately 26,000 miles (42,000 kilometers). This is a little over one tenth the dist ... more
The contents herein, unless otherwise known to be public domain, are Copyright 1995-2017 - SpaceDaily. AFP and UPI Wire Stories are copyright Agence France-Presse and United Press International. ESA Portal Reports are copyright European Space Agency. All NASA sourced material is public domain. Additional copyrights may apply in whole or part to other bona fide parties. Advertising does not imply endorsement, agreement or approval of any opinions, statements or information provided by SpaceDaily on any web page published or hosted by SpaceDaily. Privacy statement

Free Newsletters - Space News - Defense Alert - Environment Report - Energy Monitor
Buy Advertising Media Advertising Kit Editorial & Other Enquiries Privacy statement