News About Asteroids And Comets
May 24, 2017
Movie Shows Ceres at Opposition from Sun
Pasadena CA (JPL) May 17, 2017
NASA's Dawn spacecraft successfully observed Ceres at opposition on April 29, taking images from a position exactly between the sun and Ceres' surface. Mission specialists had carefully maneuvered Dawn into a special orbit so that the spacecraft could view Occator Crater, which contains the brightest area of Ceres, from this new perspective. A new movie shows these opposition images, with contrast enhanced to highlight brightness differences. The bright spots of Occator stand out particularly well ... read more

.
Space News from SpaceDaily.com
NASA Scientist Parlays Experience to Build Ocean Worlds Instrument

SDL-Supported SmallSat Launched from International Space Station

Neptune: Neutralizer-free plasma propulsion

GSLV to launch US-India NISAR EO Satellite

'Victory' for US astronauts on critical spacewalk to replace power box

NASA Acting Administrator Statement on Fiscal Year 2018 Budget Proposal

Russia aims for 15 remote sensing satellites in orbit by 2020

..
The Aerospace Corporation leads Asteroid Impact Exercise at IAA in Tokyo
Dr. William Ailor, Aerospace Fellow at The Aerospace Corporation (Aerospace), will lead a realistic asteroid impact threat exercise at the 2017 International Academy of Astronautics (IAA) Planetary ... more
..
Twisting an Asteroid
Scientists and engineers from all over the world will gather from 15 to 19 May in Tokyo, Japan, at the 5th Planetary Defence Conference (PDC) to discuss the threat posed by asteroids and comets. ... more
..
Oldest buckthorn fossilized flowers found in Argentina
Around 66 million years ago, at the end of the Cretaceous period, a giant asteroid crashed into the present-day Gulf of Mexico, leading to the extinction of the non-avian dinosaurs. How plants were ... more
..
Caltech: Chemical Engineer Explains Oxygen Mystery on Comets
A Caltech chemical engineer who normally develops new ways to fabricate microprocessors in computers has figured out how to explain a nagging mystery in space - why comets expel oxygen gas, the same ... more
..
Falkland Islands basin shows signs of being among world's largest craters
A basin in the Falkland Islands exhibits traits of a large impact crater, according to a new analysis by a team of scientists. The structure measures approximately 250 kilometers, or more than 150 m ... more
..
Chemical engineer explains why comets expel oxygen
Like trees, comets expel gas. But until now, researchers weren't exactly sure why. ... more
..
Ancient meteorite impact sparked long-lived volcanic eruptions on Earth
Meteorite impacts can produce more than craters on the Earth - they can also spark volcanic activity that shapes its surface and climate by bringing up material from depth. That is the Ancient meteo ... more
..
Dawn Observing Ceres; 3rd Reaction Wheel Malfunctions
NASA's Dawn spacecraft is preparing to observe Ceres on April 29 from an "opposition" position, directly between the dwarf planet's mysterious Occator Crater and the sun. This unique geometry may yi ... more

Free Newsletters - Space News - Defense Alert - Environment Report - Energy Monitor
..
New study ranks hazardous asteroid effects from least to most destructive
If an asteroid struck Earth, which of its effects - scorching heat, flying debris, towering tsunamis - would claim the most lives? A new study has the answer: violent winds and shock waves are the m ... more
..
Landslides on Ceres Reflect Ice Content
As NASA's Dawn spacecraft continues exploring Ceres, evidence mounts that the enigmatic dwarf planet retains a significant amount of water ice. A new study in the journal Nature Geoscience adds to t ... more
..
Close call: When asteroids whisk past Earth
A peanut-shaped asteroid 1.3 kilometres (3,280 feet) across streaked past Earth on Wednesday, giving astronomers a rare chance to check out a big space rock up close. ... more
..
NASA images Asteroid 2014 JO25 using radar prior to flyby
Radar images of asteroid 2014 JO25 were obtained in the early morning hours on Tuesday, with NASA's 70-meter (230-foot) antenna at the Goldstone Deep Space Communications Complex in California. The ... more
..
Big space rock to streak past Earth on Wednesday
An asteroid stretching 650 metres (2,000 feet) across is on track to whoosh past Earth on Wednesday at a safe - but uncomfortably close - distance, according to astronomers. ... more
..
NASA team explores using LISA Pathfinder as 'comet crumb' detector
LISA Pathfinder, a mission led by ESA (the European Space Agency) with contributions from NASA, has successfully demonstrated critical technologies needed to build a space-based observatory for dete ... more
..
High-flying experiments demonstrate potential of balloon-borne infrasound detection
Experiments conducted high in the skies over New Mexico suggest that balloon-borne sensors could be useful in detecting the infrasound signals generated by small, extraterrestrial debris entering Ea ... more
..
Large asteroid to hurtle past Earth on April 19
An asteroid as big as the Rock of Gibraltar will streak past Earth on April 19 at a safe but uncomfortably close distance, according to astronomers. ... more

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

Tempur-Pedic Mattress Comparison & Memory Foam Mattress Review
..
Could a Colorado earthquake have been triggered by dinosaur extinction impact?
Researchers have found signs of fault displacement at well-known rock outcrops in Colorado that mark the end-Cretaceous asteroid impact that may have hurried the extinction of the dinosaurs. They wi ... more
..
Asteroid to fly safely past Earth on April 19
A relatively large near-Earth asteroid discovered nearly three years ago will fly safely past Earth on April 19 at a distance of about 1.1 million miles (1.8 million kilometers), or about 4.6 times ... more
..
Ceres' temporary atmosphere linked to solar activity
Scientists have long thought that Ceres may have a very weak, transient atmosphere, but mysteries lingered about its origin and why it's not always present. Now, researchers suggest that this tempor ... more
..
Rosetta's intimate portrait of a comet: read all about it
Rosetta's pioneering mission to explore a comet in unprecedented detail completed operations last year. As the science continues, members of the public, as well as scientists, can freely access hund ... more
..
Comet That Took a Century to Confirm Passes by Earth
On April 1, 2017, comet 41P will pass closer than it normally does to Earth, giving observers with binoculars or a telescope a special viewing opportunity. Comet hunters in the Northern Hemisphere s ... more
..
Wrong-way asteroid plays 'chicken' with Jupiter
For at least a million years, an asteroid orbiting the "wrong" way around the sun has been playing a cosmic game of chicken with giant Jupiter and with about 6,000 other asteroids sharing the giant ... more
..
ExoTerra to become first privately owned space company to fly to an asteroid
NASA has awarded ExoTerra Corporation a $2.5M contract to demonstrate a novel solar electric propulsion system for CubeSats that will enable the shoebox-sized spacecraft to triple their available po ... more
..
A Trojan in Retreat
For at least a million years, an asteroid orbiting the "wrong" way around the Sun has been playing a cosmic game of chicken with giant Jupiter and about 6,000 other asteroids sharing the giant plane ... 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